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NZ744117B2 - Novel sulfonylaminobenzamide compounds as anthelmintics - Google Patents
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NZ744117B2 - Novel sulfonylaminobenzamide compounds as anthelmintics - Google Patents

Novel sulfonylaminobenzamide compounds as anthelmintics Download PDF

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Publication number
NZ744117B2
NZ744117B2 NZ744117A NZ74411715A NZ744117B2 NZ 744117 B2 NZ744117 B2 NZ 744117B2 NZ 744117 A NZ744117 A NZ 744117A NZ 74411715 A NZ74411715 A NZ 74411715A NZ 744117 B2 NZ744117 B2 NZ 744117B2
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NZ
New Zealand
Prior art keywords
alkyl
substituted
halogen
unsubstituted
haloalkyl
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NZ744117A
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NZ744117A (en
Inventor
Noelle Gauvry
Chouaib Tahtaoui
Original Assignee
Elanco Tiergesundheit Ag
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Priority claimed from EP14182960.6A external-priority patent/EP2990403A1/en
Application filed by Elanco Tiergesundheit Ag filed Critical Elanco Tiergesundheit Ag
Publication of NZ744117A publication Critical patent/NZ744117A/en
Publication of NZ744117B2 publication Critical patent/NZ744117B2/en

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00—Medicinal preparations containing organic active ingredients
    • A61K31/16—Amides, e.g. hydroxamic acids
    • A61K31/18—Sulfonamides
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00—Medicinal preparations containing organic active ingredients
    • A61K31/33—Heterocyclic compounds
    • A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
    • A61K31/495—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with two or more nitrogen atoms as the only ring heteroatoms, e.g. piperazine or tetrazines
    • A61K31/496—Non-condensed piperazines containing further heterocyclic rings, e.g. rifampin, thiothixene or sparfloxacin
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00—Medicinal preparations containing organic active ingredients
    • A61K31/33—Heterocyclic compounds
    • A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
    • A61K31/535—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with at least one nitrogen and one oxygen as the ring hetero atoms, e.g. 1,2-oxazines
    • A61K31/5375—1,4-Oxazines, e.g. morpholine
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P33/00—Antiparasitic agents
    • A61P33/10—Anthelmintics
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    • C07C235/00—Carboxylic acid amides, the carbon skeleton of the acid part being further substituted by oxygen atoms
    • C07C235/42—Carboxylic acid amides, the carbon skeleton of the acid part being further substituted by oxygen atoms having carbon atoms of carboxamide groups bound to carbon atoms of six-membered aromatic rings and singly-bound oxygen atoms bound to the same carbon skeleton
    • C07C235/44—Carboxylic acid amides, the carbon skeleton of the acid part being further substituted by oxygen atoms having carbon atoms of carboxamide groups bound to carbon atoms of six-membered aromatic rings and singly-bound oxygen atoms bound to the same carbon skeleton with carbon atoms of carboxamide groups and singly-bound oxygen atoms bound to carbon atoms of the same non-condensed six-membered aromatic ring
    • C07C235/56—Carboxylic acid amides, the carbon skeleton of the acid part being further substituted by oxygen atoms having carbon atoms of carboxamide groups bound to carbon atoms of six-membered aromatic rings and singly-bound oxygen atoms bound to the same carbon skeleton with carbon atoms of carboxamide groups and singly-bound oxygen atoms bound to carbon atoms of the same non-condensed six-membered aromatic ring having the nitrogen atom of at least one of the carboxamide groups bound to a carbon atom of a six-membered aromatic ring
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    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
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    • C07C2601/14—The ring being saturated
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    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C2602/00—Systems containing two condensed rings
    • C07C2602/02—Systems containing two condensed rings the rings having only two atoms in common
    • C07C2602/04—One of the condensed rings being a six-membered aromatic ring
    • C07C2602/08—One of the condensed rings being a six-membered aromatic ring the other ring being five-membered, e.g. indane
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    • C07C2602/40—Systems containing two condensed rings the rings having more than two atoms in common the bicyclo ring system containing six carbon atoms
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    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C307/00—Amides of sulfuric acids, i.e. compounds having singly-bound oxygen atoms of sulfate groups replaced by nitrogen atoms, not being part of nitro or nitroso groups
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    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
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    • C07C311/01—Sulfonamides having sulfur atoms of sulfonamide groups bound to acyclic carbon atoms
    • C07C311/02—Sulfonamides having sulfur atoms of sulfonamide groups bound to acyclic carbon atoms of an acyclic saturated carbon skeleton
    • C07C311/08—Sulfonamides having sulfur atoms of sulfonamide groups bound to acyclic carbon atoms of an acyclic saturated carbon skeleton having the nitrogen atom of at least one of the sulfonamide groups bound to a carbon atom of a six-membered aromatic ring
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    • C07C311/02—Sulfonamides having sulfur atoms of sulfonamide groups bound to acyclic carbon atoms of an acyclic saturated carbon skeleton
    • C07C311/09—Sulfonamides having sulfur atoms of sulfonamide groups bound to acyclic carbon atoms of an acyclic saturated carbon skeleton the carbon skeleton being further substituted by at least two halogen atoms
    • C—CHEMISTRY; METALLURGY
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    • C07C311/14—Sulfonamides having sulfur atoms of sulfonamide groups bound to carbon atoms of rings other than six-membered aromatic rings
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    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C311/00—Amides of sulfonic acids, i.e. compounds having singly-bound oxygen atoms of sulfo groups replaced by nitrogen atoms, not being part of nitro or nitroso groups
    • C07C311/15—Sulfonamides having sulfur atoms of sulfonamide groups bound to carbon atoms of six-membered aromatic rings
    • C07C311/21—Sulfonamides having sulfur atoms of sulfonamide groups bound to carbon atoms of six-membered aromatic rings having the nitrogen atom of at least one of the sulfonamide groups bound to a carbon atom of a six-membered aromatic ring
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    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C311/00—Amides of sulfonic acids, i.e. compounds having singly-bound oxygen atoms of sulfo groups replaced by nitrogen atoms, not being part of nitro or nitroso groups
    • C07C311/22—Sulfonamides, the carbon skeleton of the acid part being further substituted by singly-bound oxygen atoms
    • C07C311/29—Sulfonamides, the carbon skeleton of the acid part being further substituted by singly-bound oxygen atoms having the sulfur atom of at least one of the sulfonamide groups bound to a carbon atom of a six-membered aromatic ring
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    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D209/00—Heterocyclic compounds containing five-membered rings, condensed with other rings, with one nitrogen atom as the only ring hetero atom
    • C07D209/02—Heterocyclic compounds containing five-membered rings, condensed with other rings, with one nitrogen atom as the only ring hetero atom condensed with one carbocyclic ring
    • C07D209/04—Indoles; Hydrogenated indoles
    • C07D209/08—Indoles; Hydrogenated indoles with only hydrogen atoms or radicals containing only hydrogen and carbon atoms, directly attached to carbon atoms of the hetero ring
    • C—CHEMISTRY; METALLURGY
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    • C07D213/00—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members
    • C07D213/02—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members
    • C07D213/04—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom
    • C07D213/24—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom with substituted hydrocarbon radicals attached to ring carbon atoms
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    • C07D213/02—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members
    • C07D213/04—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom
    • C07D213/24—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom with substituted hydrocarbon radicals attached to ring carbon atoms
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    • C07D213/62—Oxygen or sulfur atoms
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Abstract

The present invention relates to a new compound of formula (I), wherein the variables have the meaning as indicated in the claims; or an enantiomer or salt thereof. The compounds of formula (I) are useful in the control of parasites, in particular endoparasites, in and on vertebrates.

Description

Novel Sulfonylaminobenzamide Compounds as Anthelmintics This application is a divisional of New Zealand patent application 728623, which is the national phase entry in New Zealand of PCT international application (published as ), filed 27 August 2015, all of which are incorporated herein by reference.
The present invention relates to novel sulfonylaminobenzamide compounds and their use in the control of endoparasites, for example heartworms, in warm-blooded animals.
Heartworm (Dirofilaria immitis) is a parasitic roundworm that is spread from host to host through the bites of mosquitoes. The definite host is the dog but it can also infect cats and other warm-blooded animals. Although commonly being called “heartworm” the adult worms actually reside in the pulmonary arterial system (lung arteries) for the most part, and the primary effect on the health of the animal is damage to the lung vessels and tissue. Occasionally, adult heartworms migrate to the right heart and even the great veins in heavy infections. Heartworm infection may result in serious disease for the host.
Heartworm infections may be combatted with arsenic-based compounds; the treatment is time-consuming, cumbersome and often only partly successful. Accordingly, the main focus is on the prevention of heartworm infections. Heartworm prevention is currently performed exclusively by year round periodical administration of a macrocyclic lactone such as ivermectin, moxidectin or milbemycin oxime to the dog, cat or else warm- blooded animal. Unfortunately, upcoming resistancy of Dirofilaria immitis against macrocyclic lactones has been observed in certain parts of the USA. Accordingly, there is a strong need for finding new classes of compounds which are effectively controlling heartworm infections either by way of prophylaxis or by direct killing of the different stages of heartworms. It is an object of the present invention to go some way towards meeting this need and/or to at least provide the public with a useful choice. It now has been found surprisingly that a group of novel sulfonylaminobenzamide compounds effectively controls endoparasites including heartworms effectively on warm-blooded animals.
SUMMARY OF THE INVENTION In a first aspect the present invention provides a compound of formula NR Y NR - S(O ) - T (I), or a salt or an enantiomer thereof, wherein n is 0 or 1; A is C -C -cycloalkyl; C -C -halocycloalkyl; 5- or 6-membered heterocycloalkyl 3 6 3 6 having from 1 to 3 same or different heteroatoms selected from the group consisting of B, N, O and S, which is further unsubstituted or substituted by halogen, C -C -alkyl or C - 1 4 1 C -alkoxy; or is cinnamyl, which is unsubstituted or substituted in the phenyl moiety by halogen, C -C -alkyl or C -C -alkoxy; or is a heteroaromatic radical, which is further 1 4 1 4 unsubstituted or substituted by halogen, cyano, C -C -alkyl, C -C -haloalkyl, C -C - 1 4 1 4 1 4 alkoxy, C -C -haloalkoxy, C -C -alkanoyl, 5- or 6-membered heterocycloalkyl-C -C - 1 4 2 4 1 2 alkyl or unsubstituted or halogen-, C -C -alkyl- or C -C -alkoxy-substituted phenyl; or is 1 4 1 4 a hetero-bicyclic ring radical comprising a total of 8 to 10 ring members, from which 1 to members are same or different heteroatoms selected from the group consisting of B, N, O and S, and from which 0 to 2 members are a group –C(O)-, which bicyclic ring radical is further unsubstituted or substituted by halogen, cyano, hydroxyl, C -C -alkyl or C -C - 1 4 1 4 haloalkyl; R is H or –S(O )-T; T is C -C -alkyl which is unsubstituted or substituted by halogen, trimethylsilyl, C -C -cycloalkyl, carboxyl or C -C -alkoxycarbonyl; C -C -cycloalkyl; C -C - 3 6 1 4 3 6 6 12 bicarbocyclyl; a 5- or 6 membered heteroaromatic radical, which is further unsubstituted or substituted by halogen, cyano, nitro, C -C -alkyl, C -C -haloalkyl or C -C -alkoxy; 5- 1 4 1 4 1 4 or 6-membered heterocycloalkyl having from 1 to 3 same or different heteroatoms selected from the group consisting of N, O, S and S(O ), which is further unsubstituted or substituted by C -C -alkyl, C -C -alkoxycarbonyl or benzyloxycarbonyl ; a group 1 4 1 2 CHNN R ; amino; or N-mono- or N,N-di- C -C -alkylamino; R is C -C -alkyl, unsubstituted or halogen-, C -C -alkyl- or C -C -haloalkyl- 1 4 1 4 1 4 substituted phenyl, unsubstituted or halogen-, C -C -alkyl- or C -C -haloalkyl-substituted 1 4 1 4 pyridyl, C -C -alkoxycarbonylmethyl or morpholinyl-carbonylmethyl; R is H or hydroxy; and Y is (i) phenyl or a phenylamino, which is substituted by one or more same or different radicals selected from the group consisting of halogen; C -C -alkyl; C -C -haloalkyl; C - 1 6 1 6 3 C -cycloalkyl; C -C -halocycloalkyl; hydroxyl; C -C -alkoxy; C -C -haloalkoxy; C -C - 6 3 6 1 6 1 6 1 6 alkylthio; C -C -haloalkylthio; C -C -alkyl-sulfinyl; C -C -haloalkylsulfinyl; C -C - 1 6 1 6 1 6 1 6 alkylsulfonyl; C -C -haloalkylsulfonyl; SF ; amino; N-mono- or N,N-di-C -C - 1 6 5 1 6 alkylamino; tri-C -C -alkylsilyl; C -C -alkoxycarbonyl; aminocarbonyl; N-mono- or 1 4 1 6 N,N-di-C -C -alkylaminocarbonyl; aminosulfonyl; N-mono- or N,N-di-C -C - 1 6 1 6 alkylaminosulfonyl; N-C -C -alkylsulfonylamino; C -C -alkoxycarbonylamino; N-C -C - 1 6 1 6 1 4 alkyl-N-C -C -alkoxycarbonylamino; cyano; nitro; and halogen-, C -C -alkyl-, C -C - 1 6 1 4 1 4 haloalkyl-, C -C -alkoxy-, C -C -haloalkoxy-, amino-, cyano- or nitro-substituted C -C - 1 4 1 4 3 6 heterocyclyl; or is (ii) 5- or 6 membered heteroaryl or heteroarylamino, which is each further unsubstituted or substituted by halogen, cyano, nitro, C -C -alkyl, C -C -haloalkyl, C - 1 4 1 4 1 C -alkoxy, C -C -alkoxycarbonyl, C -C -alkanoyl, or phenyl or phenylsulfonyl which is 4 1 4 2 4 each unsubstituted or substituted by halogen, cyano, nitro, methyl or methoxy; or is (iii) benzoyl or 5- or 6 membered heteroarylcarbonyl, which is each further unsubstituted or substituted by halogen, cyano, nitro, C -C -alkyl, C -C -haloalkyl, C - 1 4 1 4 1 C -alkoxy, C -C -alkoxycarbonyl, C -C -alkanoyl or phenyl; or is 4 1 4 2 4 (iv) a C -C -bicarbocyclic radical; or is a 6 12 (v) a radical –H C-C(O)-NH-R , wherein R is C -C -haloalkyl, C -C -alkynyl or 2 1 4 2 3 cyano-C1-C4-alkyl; or R and Y together with the N-atom to which they are attached, form a piperidinyl or piperazinyl radical which is substituted by C -C -alkyl, C -C -alkoxy, unsubstituted or 1 4 1 4 halogen-, C -C -alkyl-, C -C -haloalkyl-, amino- and/or C -C -alkoxy-substituted phenyl 1 4 1 4 1 4 or benzoylamino, or unsubstituted or C -C -alkyl-, C -C -haloalkyl-, C -C -cycloalkyl- or 1 4 1 4 3 6 halogen-substituted pyridyl or pyrimidinyl.
In a second aspect the present invention provides a composition for the control of parasites, which contains as an active ingredient at least one compound of formula (I) according to the first aspect, in addition to carriers and/or dispersants.
Also described is a compound of formula NR Y NR - S(O ) - T (I), or a salt or an enantiomer thereof, wherein n is 0 or 1; A is C -C -alkyl; C -C -haloalkyl; C -C -cycloalkyl; C -C -halocycloalkyl; 5- or 1 6 1 6 3 6 3 6 6-membered heterocycloalkyl having from 1 to 3 same or different heteroatoms selected from the group consisting of B, N, O and S, which is further unsubstituted or substituted by halogen, C -C -alkyl or C -C -alkoxy ; or is phenyl which is unsubstituted or 1 4 1 4 substituted by halogen, C -C -alkyl, C -C -haloalkyl, C -C -cycloalkyl, C -C - 1 6 1 6 3 6 3 6 halocycloalkyl, C -C -alkoxy, C -C -haloalkoxy, C -C -alkylthio, C -C -haloalkylthio, 1 6 1 6 1 6 1 6 C -C -alkyl-sulfinyl, C -C -haloalkylsulfinyl, C -C -alkylsulfonyl, C -C - 1 6 1 6 1 6 1 6 haloalkylsulfonyl, SF ; amino, N-mono- or N,N-di-C -C -alkylamino, tri-C -C - 1 6 1 4 alkylsilyl, C -C -alkoxycarbonyl, aminocarbonyl, N-mono- or N,N-di-C -C - 1 6 1 6 alkylaminocarbonyl, aminosulfonyl, N-mono- or N,N-di-C -C -alkylaminosulfonyl, C - 1 6 1 C -alkoxycarbonylamino, N-C -C -alkyl-N-C -C -alkoxycarbonylamino, cyano, nitro, or 6 1 4 1 6 unsubstituted or halogen-, C -C -alkyl-, C -C -haloalkyl-, C -C -alkoxy-, C -C - 1 4 1 4 1 4 1 4 haloalkoxy-, amino-, cyano- or nitro-substituted C -C -heterocyclyl; or is cinnamyl, which is unsubstituted or substituted in the phenyl moiety by halogen, C -C -alkyl or C - 1 4 1 C -alkoxy; or is a heteroaromatic radical, which is further unsubstituted or substituted by halogen, cyano, C -C -alkyl, C -C -haloalkyl, C -C -alkoxy, C -C -haloalkoxy, C -C - 1 4 1 4 1 4 1 4 2 4 alkanoyl, 5- or 6-membered heterocycloalkyl-C -C -alkyl or unsubstituted or halogen-, C -C -alkyl- or C -C -alkoxy-substituted phenyl; or is a hetero-bicyclic ring radical 1 4 1 4 comprising a total of 8 to 10 ring members, from which 1 to 5, preferably 1 or 2, members are same or different heteroatoms selected from the group consisting of B, N, O and S, and from which 0 to 2 members are a group –C(O)-, which bicyclic ring radical is further unsubstituted or substituted by halogen, cyano, hydroxyl, C -C -alkyl or C -C - 1 4 1 4 haloalkyl; R is H or –S(O )-T; T is C -C -alkyl, which is unsubstituted or substituted by halogen, trimethylsilyl, C -C -cycloalkyl, carboxyl or C -C -alkoxycarbonyl; C -C -cycloalkyl; C -C - 3 6 1 4 3 6 6 12 bicarbocyclyl ; phenyl which is unsubstituted or substituted by halogen, cyano, nitro, C - C -alkyl, C -C -haloalkyl or C -C -alkoxy; a 5- or 6 membered heteroaromatic radical, 4 1 4 1 4 which is further unsubstituted or substituted by halogen, cyano, nitro, C -C -alkyl, C -C - 1 4 1 4 haloalkyl or C -C -alkoxy; 5- or 6-membered heterocycloalkyl having from 1 to 3 same or different heteroatoms selected from the group consisting of N, O, S and S(O ), which is further unsubstituted or substituted by C -C -alkyl, C -C -alkoxycarbonyl or 1 4 1 2 CHNN R benzyloxycarbonyl ; a group ; amino; or N-mono- or N,N-di- C - C -alkylamino; R is C -C -alkyl, unsubstituted or halogen-, C -C -alkyl- or C -C -haloalkyl- 1 4 1 4 1 4 substituted phenyl, unsubstituted or halogen-, C -C -alkyl- or C -C -haloalkyl-substituted 1 4 1 4 pyridyl, C -C -alkoxycarbonylmethyl or morpholinyl-carbonylmethyl; R is H or hydroxy; and Y is (i) phenyl or a phenylamino, which is substituted by one or more same or different radicals selected from the group consisting of halogen; C -C -alkyl; C -C -haloalkyl; C - 1 6 1 6 3 C6-cycloalkyl; C3-C6-halocycloalkyl; hydroxyl; C1-C6-alkoxy; C1-C6-haloalkoxy; C1-C6- alkylthio; C -C -haloalkylthio; C -C -alkyl-sulfinyl; C -C -haloalkylsulfinyl; C -C - 1 6 1 6 1 6 1 6 alkylsulfonyl; C -C -haloalkylsulfonyl; SF ; amino; N-mono- or N,N-di-C -C - 1 6 5 1 6 alkylamino; tri-C -C -alkylsilyl; C -C -alkoxycarbonyl; aminocarbonyl; N-mono- or 1 4 1 6 N,N-di-C -C -alkylaminocarbonyl; aminosulfonyl; N-mono- or N,N-di-C -C - 1 6 1 6 alkylaminosulfonyl; N-C -C -alkylsulfonylamino; C -C -alkoxycarbonylamino; N-C -C - 1 6 1 6 1 4 alkyl-N-C -C -alkoxycarbonylamino; cyano; nitro; and unsubstituted or halogen-, C -C - 1 6 1 4 alkyl-, C -C -haloalkyl-, C -C -alkoxy-, C -C -haloalkoxy-, amino-, cyano- or nitro- 1 4 1 4 1 4 substituted C -C -heterocyclyl; or is (ii) 5- or 6 membered heteroaryl or heteroarylamino, which is each further unsubstituted or substituted by halogen, cyano, nitro, C -C -alkyl, C -C -haloalkyl, C - 1 4 1 4 1 C -alkoxy, C -C -alkoxycarbonyl, C -C -alkanoyl, or phenyl or phenylsulfonyl which is 4 1 4 2 4 each unsubstituted or substituted by halogen, cyano, nitro methyl or methoxy; or is (iii) benzoyl or 5- or 6 membered heteroarylcarbonyl, which is each further unsubstituted or substituted by halogen, cyano, nitro, C -C -alkyl, C -C -haloalkyl, C - 1 4 1 4 1 C -alkoxy, C -C -alkoxycarbonyl, C -C -alkanoyl or phenyl; or is 4 1 4 2 4 (iv) a C -C -bicarbocyclic radical; or is a 6 12 (v) a hetero-bicyclic ring radical comprising a total of 8 to 10 ring members, from which 1 to 5, preferably 1 or 2, members are same or different heteroatoms selected from the group consisting of B, N, O and S, and from which 0 to 2 members are a group – C(O)-, which bicyclic ring radical is further unsubstituted or substituted by halogen, cyano, hydroxyl, C -C -alkoxy, C -C -alkyl or C -C -haloalkyl; or is 1 4 1 4 1 4 (vi) a radical –H2C-C(O)-NH-R , wherein R is C1-C4-haloalkyl, C2-C3-alkynyl or cyano-C -C -alkyl; or R and Y together with the N-atom to which they are attached, form a piperidinyl or piperazinyl radical which is substituted by C -C -alkyl, C -C -alkoxy, unsubstituted or 1 4 1 4 halogen-, C1-C4-alkyl-, C1-C4-haloalkyl-, amino- and/or C1-C4-alkoxy-substituted phenyl or benzoylamino, or unsubstituted or C -C -alkyl-, C -C -haloalkyl-, C -C -cycloalkyl- or 1 4 1 4 3 6 halogen-substituted pyridyl or pyrimidinyl; subject to the provisos that (i) at least one of A and Y must not be a phenyl radical if T is CH ; and (ii) T is C -C -alkyl which is unsubstituted or substituted as mentioned above if A is C -C -alkyl or C -C -haloalkyl. 1 6 1 6 Also described is a composition comprising a compound of formula (I), or a salt or enantiomer thereof, and at least one carrier, for example a surfactant, a solid diluent and/or a liquid diluent.
Also described is a composition for controlling parasites, in particular endoparasites, comprising a biologically effective amount of a compound of formula (I), or a salt thereof, and at least one additional component selected from the group consisting of a surfactant, a solid diluent and a liquid diluent, said composition optionally further comprising a biologically effective amount of at least one additional pharmaceutically or veterinary active compound or agent.
Also described is a method for controlling parasites comprising contacting the parasites or their environment with a pharmaceutically or veterinary effective amount of a compound of formula (I), an enantiomer or a salt thereof, (e.g., as a composition described herein). Also described is such method wherein the parasites or their environment are contacted with a composition comprising a pharmaceutically or veterinary effective amount of a compound of formula (I), an enantiomer or a salt thereof, and at least one additional component selected from the group consisting of a surfactant, a solid diluent and a liquid diluent, said composition optionally further comprising a pharmaceutically or veterinary effective amount of at least one additional pharmaceutically or veterinary active compound or agent.
Also described is a method for protecting an animal from a parasitic pest comprising administering to the animal a parasiticidally effective amount of a compound of formula (I), an enantiomer or a salt thereof.
DETAILS OF THE INVENTION In the above recitations, the term “alkyl”, used either alone or in compound words such as “alkylthio”, “haloalkylthio”, “haloalkyl”, “N-alkylamino”, “N,N-di-alkyamino” and the like includes straight-chain or branched alkyl, such as, methyl, ethyl, n-propyl, i- propyl, n-, iso-, sec.- or tert.-butyl or the different pentyl or hexyl isomers.
The term “alkoxy” used either alone or in compound words such as “haloalkoxy”, “alkoxycarbonyl” includes, for example, methoxy, ethoxy, n-propyloxy, isopropyloxy and the different butoxy, pentoxy and hexyloxy isomers. “Alkylthio” includes branched or straight-chain alkylthio moieties such as methylthio, ethylthio, and the different propylthio, butylthio, pentylthio and hexylthio isomers.
“Alkylsulfinyl” includes both enantiomers of an alkylsulfinyl group. Examples of “alkylsulfinyl” include CH S(O)-, CH CH S(O)-, CH CH CH S(O)-, (CH ) CHS(O)- 3 3 2 3 2 2 3 2 and the different butylsulfinyl, pentylsulfinyl and hexylsulfinyl isomers.
“Alkylcarbonyl” denotes a straight-chain or branched alkyl moieties bonded to a C(=O) moiety. Examples of “alkylcarbonyl” include CH C(=O)-, CH CH CH C(=O)- 3 3 2 2 and (CH ) CHC(=O)-. Examples of “alkoxycarbonyl” include CH OC(=O)-, 3 2 3 CH CH OC(=O), CH CH CH OC(=O)-, (CH ) CHOC(=O)- and the different butoxy- or 3 2 3 2 2 3 2 pentoxycarbonyl isomers, for example tert.-butoxycarbonyl (Boc). Examples of “alkoxycarbonylamino” include tert.-butoxycarbonylamino, examples of “N- alkoxycarbonyl” include N-tert.-butoxycarbonyl and examples of “N-alkylamino” include N-methylamino. Examples of “N-mono- or N,N-di-alkylaminocarbonyl” include N-methylaminocarbonyl, N-ethylaminocarbonyl, N-methyl-N-ethylaminocarbonyl, N,N- di-methylaminocarbonyl or N,N-di-ethylaminocarbonyl. Examples of “alkyl- carbonylamino” include methylcarbonylamino or ethylcarbonylamino.
Examples of "alkylsulfonyl" include CH S(O) -, CH CH S(O) -, 3 2 3 2 2 CH CH CH S(O) -, (CH ) CHS(O) -, and the different butylsulfonyl, pentylsulfonyl and 3 2 2 2 3 2 2 hexylsulfonyl isomers. Examples of “N-mono- or N,N-di-alkylaminosulfonyl” include N- methylaminosulfonyl, N-ethylaminosulfonyl, N-methyl-N-ethylaminosulfonyl, N,N-di- methylaminosulfonyl or N,N-di-ethylaminosulfonyl. Examples of “alkylsulfonylamino” include methylsulfonylamino or ethylsulfonylamino.
“Cycloalkyl” includes, for example, cyclopropyl, cyclobutyl, cyclopentyl and cyclohexyl. The term “alkylcycloalkyl” denotes alkyl substitution on a cycloalkyl moiety and includes, for example, ethylcyclopropyl, i-propylcyclobutyl, 3-methylcyclopentyl and 4-methycyclohexyl.
Examples of C -C -bicarbocyclyl are the radical of (+)- or (-)-campher (1,7,7- 6 12 H C CH trimethylbicyclo[2.2.1]heptanone), a radical , a radical or indanyl.
The term “halogen”, either alone or in compound words such as “haloalkyl”, includes fluorine, chlorine, bromine or iodine. Further, when used in compound words such as “haloalkyl”, said alkyl may be partially or fully substituted with halogen atoms which may be the same or different. Examples of “haloalkyl” include F C-, ClCH -, CF CH - and CF CCl -. The terms “halocycloalkyl”, “haloalkoxy”, “haloalkylthio”, and 3 2 3 2 the like, are defined analogously to the term “haloalkyl”. Examples of “haloalkoxy” include CF O-, CF CF -O-, CF CH O-, CCl CH O-, CF CHFCF O- and 3 3 2 3 2 3 2 3 2 HCF CH CH O-. Examples of “haloalkylthio” include CCl S-, CF S-, CCl CH S- and 2 2 2 3 3 3 2 ClCH CH CH S-. Examples of “haloalkylsulfinyl” include CF S(O)-, CCl S(O)-, 2 2 2 3 3 CF CH S(O)- and CF CF S(O)-. Examples of “haloalkylsulfonyl” include CF S(O) -, 3 2 3 2 3 2 CCl S(O) -, CF CH S(O) - and CF CF S(O) -. 3 2 3 2 2 3 2 2 The total number of carbon atoms in a substituent group is indicated by the “C - C ” prefix where i and j are integers. For example, C -C alkylsulfonyl designates j 1 4 methylsulfonyl through butylsulfonyl.
When a compound is substituted with a substituent bearing a subscript that indicates the number of said substituents can exceed 1, said substituents (when they exceed 1) are independently selected from the group of defined substituents, e.g., (R ) , n is 1 or 2.
“Aromatic” indicates that each of the ring atoms is essentially in the same plane and has ap-orbital perpendicular to the ring plane, and in which (4n + 2) π electrons, where n is a positive integer, are associated with the ring to comply with Hϋckel's rule.
The terms “heterocyclyl”, “heterocyclic ring” or “heterocycle” denote a ring in which at least one atom forming the ring backbone is not carbon, e.g., nitrogen, oxygen sulfur or a group S(O) or S(O ). Typically a heterocyclic ring contains no more than 4 nitrogens, no more than 2 oxygens and no more than 2 sulfurs. In addition, the heterocyclic ring may contain a group –C(O)-, -S(O)- or –S(O )-. Unless otherwise indicated, a heterocyclic ring can be a saturated, partially unsaturated, or fully unsaturated ring. When a fully unsaturated heterocyclic ring satisfies Hϋckel's rule, then said ring is also called a “heteroaromatic ring” or “heteroaryl” substituent. Unless otherwise indicated, heterocyclic rings and ring systems can be attached through any available carbon or nitrogen by replacement of a hydrogen on said carbon or nitrogen.
The term heterocyclyl, either alone or in compound words such as heterocyclyloxy may be, for example a 5- or 6-membered heterocyclic radical having from 1 to 4, preferably from 1 to 3 same or different heteroatoms selected from the group consisting of B, N, O and S, which is further unsubstituted or substituted. Examples of suitable substituents of the heterocyclyl are halogen, C -C -alkyl, C -C -haloalkyl, C -C - 1 6 1 6 3 6 cycloalkyl, C -C -halocycloalkyl, hydroxy, C -C -alkoxy, C -C -haloalkoxy, C -C - 3 6 1 6 1 6 1 6 alkylthio, C -C -haloalkylthio, C -C -alkylsulfinyl, C -C -haloalkylsulfinyl, C -C - 1 6 1 6 1 6 1 6 alkylsulfonyl, C -C -haloalkylsulfonyl, cyano, nitro, amino, N-mono- or N,N-di-C -C - 1 6 1 4 alkylamino, C -C -alkoxycarbonyl, sulfonamido, N-mono- or N,N, di-C -C - 1 6 1 4 alkylsulfonamido, C -C -alkylcarbonylamino, N-mono- or N,N-di-C -C - 1 6 1 6 alkylaminocarbonyl, C -C -alkanoyl, or phenyl, which is unsubstituted or substituted by halogen, C -C -alkyl, C -C -haloalkyl, C -C -alkoxy, C -C -haloalkoxy, cyano or nitro. 1 6 1 6 1 6 1 6 The term heterocyclyl may denote, for example, a 5- or 6-membered heteroaryl radical having from 1 to 4, preferably from 1 to 3 same or different heteroatoms selected from the group consisting of N, O and S, which is further unsubstituted or substituted by one or more substituents as defined above for heterocyclyl. The heteroaryl radical is preferably substituted by 0 to 3, in particular 0, 1 or 2 substituents from the group as defined above.
The term 5- or 6-membered heteroaryl, either alone or in terms such as heteroarylamino or heteroarylcarbonyl, may include, for example, a thienyl, pyrryl, pyrazolyl, furyl, oxazolyl, thiazolyl, isothiazolyl, thiadiazolyl, pyridyl, pyrimidinyl or thiazinyl radical which is each unsubstituted or substituted, for example, by halogen, cyano, nitro, C -C -alkyl, C -C -haloalkyl, C -C -cycloalkyl, C -C -alkoxy, C -C - 1 2 1 2 3 6 1 4 2 4 alkanoyl, C1-C4-alkoxycarbonyl or unsubstituted or substituted phenyl.
The term heterocyclyl may further denote a 3 to 6-membered heterocycloalkyl radical having from 1 to 3 same or different heteroatoms selected from the group consisting of B, N, O and S, which is further unsubstituted or substituted by one or more substituents as defined above for heterocyclyl. The heterocycloalkylene radical is preferably substituted by 0 to 3, in particular 0, 1 or 2 substituents from the group as defined above. Examples are tetrahydrofuranyl, pyrrolidinyl, morpholinyl, piperidinyl, piperazinyl or dioxoborolanyl which is each unsubstituted or substituted by halogen, C - C -alkyl, C -C -haloalkyl or C -C -alkoxy. 2 1 2 1 2 Examples of heterocyclyloxy are 2-, 3-or 4-pyridyloxy or pyrimidinyloxy, which is each unsustituted or substituted by by halogen, C -C -alkyl, C -C -cycloalkyl, 1 2 3 6 C -C -haloalkyl or C -C -alkoxy. 1 2 1 2 Examples of heterobicyclic ring radicals are benzoxazolyl, benzothiazolyl, tetrahydro-benzothiazolyl, indolyl, benzimidazolyl, benzopyrazolyl, 5,6-dihydro-4H- cyclopenta[b]thiophenyl, methylenedioxoyphenyl, benzooxaboronyl, chinolinyl, triazolopyrimidinonyl, for example 1,2,3-triazolo[4,5-d]pyrimidinoneyl, or phthalhydrazidyl, which may each be unsubstituted or substituted, for example, by halogen, cyano, C -C -alkyl, C -C -haloalkyl, hydroxy or C -C -alkoxy. 1 4 1 2 1 2 Concerning the variables contained in the compounds of formula (I), the following meanings and preferences apply.
The variable n is preferably 1 if A is a phenyl radical. The variable n is preferably 0 if A is different from a phenyl radical, e.g. if A is C -C -alkyl, C -C -haloalkyl, C -C - 1 6 1 6 3 6 cycloalkyl; C -C -halocycloalkyl; a 5- or 6-membered heterocycloalkyl radical, a heteroaromatic radical, or a hetero-bicyclic ring radical.
Preferred substituents of the phenyl radical A are halogen; C -C -alkyl; C -C - 1 4 1 4 haloalkyl; amino; C -C -alkoxy; C -C -haloalkoxy; C -C -haloalkylthio; C -C - 1 4 1 4 1 4 1 4 alkylsulfonyl; C1-C4-haloalkylsulfonyl; tri-C1-C2-alkylsilyl; C1-C4-alkoxycarbonyl; N- mono- or N,N-di-C -C -alkylaminocarbonyl; aminosulfonyl; N-mono- or N,N-di-C -C - 1 4 1 4 alkylaminosulfonyl; N-C1-C2-alkyl-N-C1-C4-alkoxycarbonylamino; cyano; nitro; or 5- or 6-membered heterocycloalkyl comprising 1 or 2 same or different heteroatoms selected from O, S and N, which is unsubstituted or substituted by halogen, C1-C2-alkyl, C1-C2- haloalkyl or C -C -alkoxy.
More preferred substituents of the phenyl radical A are halogen; C -C -alkyl; C - 1 2 1 C -haloalkyl; amino; C -C -alkoxy; C -C -haloalkoxy; C -C -alkylsulfonyl; C -C - 4 1 4 1 4 1 4 1 4 haloalkylsulfonyl; trimethylsilyl; C -C -alkoxycarbonyl; N,N-di-C -C -alkylamino- 1 4 1 2 carbonyl; aminosulfonyl; N,N-di-C -C -alkylaminosulfonyl; N-C -C -alkyl-N-C -C - 1 2 1 2 1 4 alkoxycarbonylamino; cyano; nitro; or a heterocycloalkyl radical selected from the group consisting of tetrahydrofuranyl, pyrrolidinyl, morpholinyl and piperidinyl.
Especially preferred substituents of the phenyl radical A are halogen, C -C -alkyl, C -C -haloalkyl, C -C -alkoxy, C -C -haloalkoxy or cyano, and especially chlorine, 1 2 1 2 1 2 fluorine or CF .
Specific preferred phenyl radicals A are 2-, 3- or 4-Cl-phenyl, 4-CF -phenyl, 3,5- di-Cl-phenyl, 3,5-di-CF -phenyl, 2,4,6-tri-Cl-phenyl, 3,4,5-tri-Cl-phenyl, 2-ClCF - phenyl, 2-CF Cl-phenyl or 2,6-di-ClCF -phenyl, in particular 4-Cl-phenyl.
A as C -C -alkyl is preferably C -C -alkyl. A as haloalkyl is preferably C -C - 1 6 1 4 1 2 haloalkyl, in particular CF .
A as 5- or 6-membered heterocycloalkyl is preferably a pyrrolidinyl, piperazinyl, morpholinyl or dioxaborolanyl, which is each unsubstituted or substituted by methyl.
A as a heteroaromatic radical is preferably pyrryl, pyrazolyl,triazolyl, thienyl, thiazinyl, thiazolyl, pyridyl or pyrimidinyl , which is each unsubstituted or substituted by halogen, cyano, C -C -alkyl, C -C -alkoxy, C -C -haloalkyl, acetyl, propionyl, phenyl or 1 2 1 2 1 2 morpholinyl-methyl. Particularly preferred meanings of A as heteroaromatic radical are 2-, 3- or 4-pyridyl which is unsubstituted or substituted by halogen, cyano, C -C - alkoxy, acetyl or propionyl; pyrimidinyl which is unsubstituted or substituted by halogen or acetyl; 1,2,4-triazolyl which is unsubstituted or substituted by phenyl;, thienyl which is unsubstituted or substituted by halogen, acetyl or morpholinyl-methyl; pyrazolyl or yl which is each unsubstituted or substituted by methyl; or thiazinyl.
A as a hetero-bicyclic ring radical is preferably indolyl, benzopyrazolyl or benzothiazol, which is each unsubstituted or substituted by methyl.
According to a preferred embodiment described herein A is C -C -alkyl; C -C - 1 4 1 2 haloalkyl; heterocycloalkyl selected from pyrrolidinyl, piperazinyl, morpholinyl and dioxaborolanyl, which is each unsubstituted or substituted by methyl; a heteroaromatic radical selected from pyrryl, pyrazolyl, triazolyl, thienyl, thiazinyl, thiazolyl, pyridyl and pyrimidinyl, which is each unsubstituted or substituted by halogen, cyano, C -C -alkyl, C -C -alkoxy, C -C -haloalkyl, acetyl, propionyl, phenyl or morpholinyl-methyl; or a 1 2 1 2 hetero-bicyclic ring radical selected from indolyl, benzopyrazolyl and benzothiazol, which is each unsubstituted or substituted by methyl.
The variable R is preferably H.
T as alkyl radical is preferably C -C -alkyl, which is unsubstituted or substituted by halogen, cyclopropyl, cyclohexyl, trimethylsilyl, carboxy or C -C -alkoxycarbonyl.
Particularly preferred meanings of T as alkyl radical are C -C -alkyl; C -C -haloalkyl, in 1 4 1 3 particular CF , -CH -CF or -CH -CH -CF ; trimethylsilyl-C -C -alkyl; C -C - 3 2 3 2 2 3 1 2 1 2 alkoxycarbonylmethyl; carboxymethyl; or cyclohexylmethyl; especially methyl.
T as C -C -cycloalkyl, in preferably cyclopropyl or cyclohexyl.
T as bicarbocyclyl is, for example, a bicycloalkylene or bicycloalkylenone radical, for example 1,7,7-trimethylbicyclo[2.2.1]heptyl or 1,7,7-trimethylbicyclo[2.2.1]heptan one-yl ((+)- or (-)-camphor).
T as phenyl radical is preferably phenyl which is unsubstituted or substituted by fluorine, chlorine, methyl, methoxy, CF or nitro.
T as heteroaromatic radical is preferably pyridyl, thienyl or pyrimidinyl.
T as heterocycloalkyl is preferably piperidinyl, piperazinyl, tetrahydropyranyl, morpholinyl, thiomorpholinyl or thiomorpholinyl-1,1-dioxide, which is each unsubstituted or substituted by methyl or benzyloxycarbonyl. Particularly preferred heterocyclyl radicals T are 1-methylpiperazinyl, 1-(benzyloxycarbonyl)-piperazinyl, tetrahydro-2H-pyranyl or, thiomorpholinyl-1,1-dioxide.
R is preferably methyl, halophenyl, trifluoromethylpyridyl, tert.- butoxycarbonylmethyl or morpholinyloxycarbonylmethyl.
T is preferably C1-C4-alkyl; C1-C3-haloalkyl; trimethylsilyl-C1-C2-alkyl; C1-C2- alkoxycarbonylmethyl; carboxymethyl; cyclohexylmethyl; C -C -cycloalkyl; 1,7,7- trimethylbicyclo[2.2.1]heptyl or 1,7,7-trimethylbicyclo[2.2.1]heptanone-yl ((+)- or (-)- camphor); phenyl which is unsubstituted or substituted by fluorine, chlorine, methyl, methoxy, CF3 or nitro; pyridyl, thienyl or pyrimidinyl; heterocycloalkyl selected from piperidinyl, piperazinyl, tetrahydropyranyl, morpholinyl, thiomorpholinyl or thiomorpholinyl-1,1-dioxide, which is each unsubstituted or substituted by methyl or NN R benzyloxycarbonyl; or a group wherein R is methyl, halophenyl, trifluoromethylpyridyl, tert.-butoxycarbonylmethyl or morpholinyloxycarbonylmethyl.
R is preferably H.
Preferred substituents of the phenyl or phenylamino radical Y are halogen; C -C - alkyl; C -C -haloalkyl; C -C -cycloalkyl; C -C -alkoxy; C -C -haloalkoxy; C -C - 1 4 3 6 1 4 1 4 1 4 haloalkylthio; SF ; N,N-di-C -C -alkylamino-C -C -alkylaminocarbonyl; N-C -C - 1 4 1 4 1 4 alkylsulfonylamino; cyano; nitro; hydroxy; B(OH) or methylsulfonylamino.
More preferred substituents of the phenyl or phenylamino radical Y are halogen; C -C -alkyl; C -C -haloalkyl; C -C -alkoxy; C -C -haloalkoxy; C -C -haloalkylthio; SF ; 1 2 1 3 1 2 1 3 1 2 5 cyano; nitro; hydroxy; or methylsulfonylamino.
Particularly preferred substituents of the phenyl or phenylamino radical Y halogen, methyl, C -C -haloalkyl, methoxy, C -C -haloalkoxy, SCF , SF , cyano, nitro or 1 3 1 3 3 5 hydroxy and especially halogen or CF .
A specific preferred phenyl radical Y is 3,4,5-trichlorophenyl, 3,5-di- trifluoromethylchlorophenyl and 3,5-di-trifluoromethylphenyl.
A specific preferred phenylamino radical Y is phenyl amino which is substituted by chlorine, bromine, methyl trifluoromethyl, methoxy, cyano or nitro.
A heteroaryl radical Y is, for example, pyrryl, pyrazolyl, oxazolyl, thienyl, thiazolyl, isothiazolyl, thiadiazolyl, pyridyl or pyrimidinyl, which is each unsubstituted or substituted by halogen, cyano, nitro, C -C -alkyl, C -C -haloalkyl, C -C -alkoxy, C -C - 1 4 1 2 1 2 1 2 alkoxycarbonyl, or phenyl or phenylsulfonyl which is in turn each unsubstituted or substituted by halogen, cyano, nitro methyl or methoxy.
A heteroaryl radical Y is preferably 2-, 3- or 4-pyridyl which is unsubstituted or substituted by halogen, C1-C4-alkyl or C1-C2-alkoxy; 2-thienyl, which is unsubstituted or substituted by C -C -alkyl or C -C -alkoxycarbonyl; 2-thiazolyl, which is unsubstituted or 1 2 1 2 substituted by halogen, cyano, nitro, C1-C2-alkyl, C1-C2-haloalkyl, C1-C2-alkoxycarbonyl, or phenyl or phenylsulfonyl which is in turn each unsubstituted opr substituted by halogen, cyano, nitro or methyl; 5-isothiazoyl which is unsubstituted or substituted by halogen or methyl; 2-oxazolyl, which is unsubstituted or substituted by C -C -alkyl or C - 1 2 1 C -haloalkyl; or 1,3,4-thiadiazolyl, which is unsubstituted or substituted by C -C - 2 1 2 alkyl or C -C -haloalkyl.
A heteroarylamino radical Y is preferably 2-, 3- or 4-pyridylamino, which is unsubstituted or substituted by halogen, C -C -alkyl or C -C -alkoxy. 1 4 1 2 A benzoyl or heteroarylcarbonyl radical Y is preferably benzoyl, which is unsubstituted or substituted by halogen; or 2-, 3- or 4-pyridylcarbonyl which is unsubstituted or substituted by halogen or C -C -alkyl.
A preferred bicarbocyclic radical Y is preferably a radical , a radical H C CH or indanyl.
A preferred heterobicyclic ring radical Y is benzothiazolyl, indolyl, chinolinyl, methylenedioxophenyl, benzooxaboronyl, triazolopyrimidinonyl or phthalhydrazidyl, which is each be unsubstituted or substituted by halogen, C -C -alkyl, C -C -haloalkyl, 1 4 1 2 C -C -alkoxy or hydroxy.
The variable R is preferably propynyl, 2,2,2-trifluoroethyl or cyanomethyl.
A preferred radical Y is thus (i) phenyl or phenylamino which is substituted by halogen, C -C -alkyl, C -C -haloalkyl, C -C -alkoxy, C -C -haloalkoxy, C -C - 1 2 1 3 1 2 1 3 1 2 haloalkylthio, SF , cyano, nitro, hydroxy or methylsulfonylamino; (iia) heteroaryl selected from 2-, 3- or 4-pyridyl which is unsubstituted or substituted by halogen, C -C - alkyl or C -C -alkoxy, 2-thienyl, which is unsubstituted or substituted by C -C -alkyl or 1 2 1 2 C -C -alkoxycarbonyl, 2-thiazolyl, which is unsubstituted or substituted by halogen, cyano, nitro, C -C -alkyl, C -C -haloalkyl, C -C -alkoxycarbonyl, or phenyl or 1 2 1 2 1 2 phenylsulfonyl which is in turn each unsubstituted or substituted by halogen, cyano, nitro or methyl, 5-isothiazoyl which is unsubstituted or substituted by halogen or methyl, 2- oxazolyl, which is unsubstituted or substituted by C -C -alkyl or C -C -haloalkyl, or 1 2 1 2 1,3,4-thiadiazolyl, which is unsubstituted or substituted by C -C -alkyl or C -C - 1 2 1 2 haloalkyl; (iib) heteroarylamino selected from 2-, 3- or 4-pyridylamino, which is unsubstituted or substituted by halogen, C -C -alkyl or C -C -alkoxy; (iii) benzoyl, which 1 4 1 2 is unsubstituted or substituted by halogen, or 2-, 3- or 4-pyridylcarbonyl which is unsubstituted or substituted by halogen or C -C -alkyl; (iv) a bicarbocyclic radical H C CH selected from a radical , a radical and indanyl; (v) a heterobicyclic ring radical selected from benzothiazolyl, indolyl, chinolinyl, methylenedioxophenyl, benzooxaboronyl, triazolopyrimidinonyl and phthalhydrazidyl, which is each be unsubstituted or substituted by halogen, C -C -alkyl, C -C -haloalkyl, C -C -alkoxy or 1 4 1 2 1 4 hydroxy; or (vi) a radical –H C-C(O)-NH-R , wherein R is propynyl, 2,2,2- trifluoroethyl or cyanomethyl.
If R and Y together with the N-atom to which they are attached, form a piperidinyl or piperazinyl radical, said piperidinyl or piperazinyl radical is preferably substituted by methyl; methoxy; halogen-, amino-, methoxy- or trifluoromethyl- substituted phenyl or benzoylamino; or halogen-, trifluoromethyl- and/or cyclopropyl- substituted pyridyl or pyrimidinyl.
One embodiment described herein concerns a compound of formula NH-SO CH (Ia), wherein n has the above-given meaning including the preferences, Y’ is phenyl which is substituted as mentioned above including the preferences; and A’ is C -C -alkyl; C -C - 1 6 1 6 haloalkyl; C -C -cycloalkyl; C -C -halocycloalkyl; 5- or 6-membered heterocycloalkyl 3 6 3 6 having from 1 to 3 same or different heteroatoms selected from the group consisting of B, N, O and S, which is further unsubstituted or substituted by halogen, C -C -alkyl or C - 1 4 1 C -alkoxy; a heteroaromatic radical, which is further unsubstituted or substituted by halogen, cyano, C -C -alkyl, C -C -haloalkyl, C -C -alkoxy, C -C -haloalkoxy, C -C - 1 4 1 4 1 4 1 4 1 4 alkanoyl, 5- or 6-membered heterocycloalkyl-C -C -alkyl or unsubstituted or halogen-, C -C -alkyl- or C -C -alkoxy-substituted phenyl; or is a hetero-bicyclic ring radical 1 4 1 4 comprising a total of 8 to 10 ring members, from which 1 to 5, preferably 1 or 2, members are same or different heteroatoms selected from the group consisting of B, N, O and S, and from which 0 to 2 members are a group –C(O)-, which bicyclic ring radical is further unsubstituted or substituted by halogen, cyano, hydroxyl, C -C -alkoxy, C -C - 1 4 1 4 alkyl or C -C -haloalkyl.
A compound of formula (Ia), wherein Y’ is phenyl which is substituted by 2 or 3 same or different radicals selected from halogen or CF ; and A’ is C -C -alkyl; CF ; 3 1 4 3 pyrrolidinyl, piperazinyl, morpholinyl or dioxaborolanyl, which is each unsubstituted or substituted by methyl; pyrryl, pyrazolyl, triazolyl, thienyl, thiazinyl, thiazolyl, pyridyl or pyrimidinyl , which is each unsubstituted or substituted by halogen, cyano, C -C -alkyl, C -C -alkoxy, C -C -haloalkyl, acetyl, propionyl, phenyl or morpholinyl-methyl; or 1 2 1 2 indolyl, benzopyrazolyl or benzothiazolyl, which is each unsubstituted or substituted by methyl or methoxy; and n is 0 or 1, in particular 1; is especially preferred.
A further preferred embodiment described herein concerns a compound of formula NR -SO T (Ib), wherein A is phenyl which is unsubstituted or substituted as mentioned above including the preferences, Y is phenyl which is substituted as mentioned above including the preferences, T is C -C -alkyl, which is unsubstituted or substituted by halogen, trimethylsilyl, C -C -cycloalkyl, carboxy or C -C -alkoxycarbonyl; C -C -cycloalkyl; C - 3 6 1 4 3 6 6 C -bicarbocyclyl ; phenyl which is unsubstituted or substituted by halogen, cyano, nitro, C -C -alkyl, C -C -haloalkyl or C -C -alkoxy; a 5- or 6 membered heteroaromatic radical, 1 4 1 4 1 4 which is further unsubstituted or substituted by halogen, C -C -alkyl or C -C -alkoxy; 1 4 1 4 amino; N-mono- or N,N-di- C -C -alkylamino; 5- or 6-membered heterocycloalkyl having from 1 to 3 same or different heteroatoms selected from the group consisting of N, O, S and S(O ), which is further unsubstituted or substituted by C -C -alkyl; or a group 2 1 4 CHNN R , and R is C -C -alkyl, unsubstituted or halogen-, C -C -alkyl- or 1 4 1 4 C -C -haloalkyl-substituted phenyl, unsubstituted or halogen-, C -C -alkyl- or C -C - 1 4 1 4 1 4 haloalkyl-substituted pyridyl, C -C -alkoxycarbonylmethyl or morpholinyl- carbonylmethyl.
A preferred embodiment relates to a compound of formula (Ib), wherein A is phenyl which is unsubstituted or preferably mono-substituted by chlorine, fluorine or CF , Y is phenyl which is substituted by 2 or 3 same or different radicals selected from halogen or CF , and T is C -C -alkyl, which is unsubstituted or substituted by halogen, 3 2 4 cyclopropyl, cyclohexyl, trimethylsilyl, carboxy or C -C -alkoxycarbony; cyclopropyl or cyclohexyl; the radical of (+)- or (-)-camphor; phenyl which is unsubstituted or substituted by fluorine, chlorine, methyl, methoxy, CF or nitro; or pyridyl, thienyl or pyrimidinyl; piperidinyl, piperazinyl, tetrahydropyranyl, morpholinyl, thiomorpholinyl or thiomorpholinyl-1,1-dioxide, which is each unsubstituted or substituted by methyl or benzyloxycarbonyl.
A further preferred embodiment described herein concerns a compound of formula O Y'' NH-SO -CH (Ic), wherein A is phenyl which is unsubstituted or substituted as mentioned above including the preferences, R is H or hydroxyl; and Y’’ is (i) 5- or 6 membered heteroaryl or heteroarylamino, which is each further unsubstituted or substituted by halogen, cyano, nitro, C -C -alkyl, C -C -haloalkyl, C - 1 4 1 4 1 C -alkoxy, C -C -alkoxycarbonyl, C -C -alkanoyl or phenyl or phenylsulfonyl which is 4 1 4 1 4 each unsubstituted or substituted by halogen, cyano, nitro methyl or methoxy; or is (ii) benzoyl or 5- or 6 membered heteroarylcarbonyl, which is each further unsubstituted or substituted by halogen, cyano, nitro, C -C -alkyl, C -C -haloalkyl, C - 1 4 1 4 1 C -alkoxy, C -C -alkoxycarbonyl, C -C -alkanoyl or phenyl; or is 4 1 4 1 4 (iii) a C -C -bicarbocyclic radical; or is a 6 12 (iv) a hetero-bicyclic ring radical comprising a total of 8 to 10 ring members, from which 1 to 5, preferably 1 or 2, are same or different heteroatoms selected from the group consisting of B, N, O and S, and from which 0 to 2 are a group –C(O)-, which bicyclic ring radical is further unsubstituted or substituted by halogen, cyano, hydroxyl, C -C - alkyl, C -C -alkoxy or C -C -haloalkyl; or is 1 4 1 4 (v) a radical –H C-C(O)-NH-R , wherein R is C -C -haloalkyl, C -C -alkynyl or 2 1 4 2 3 cyano-C -C -alkyl; or R and Y together with the N-atom to which they are attached, form a piperidinyl or piperazinyl radical which is substituted by C -C -alkyl, C -C - 1 4 1 4 alkoxy, unsubstituted or halogen-, C -C -alkyl-, halo- C -C -alkyl-, amino- and/or C -C - 1 4 1 4 1 4 alkoxy-substituted phenyl or benzoylamino, or unsubstituted or C -C -alkyl-, C -C - 1 4 1 4 haloalkyl-, C -C -cycloalkyl- or halogen-substituted pyridyl or pyrimidinyl.
Concerning a preferred embodiment of the compounds of formula (Ic), A is phenyl which is unsubstituted or preferably mono-substituted by chlorine, fluorine or CF ; R is H, and Y’’ is (i) 2-, 3- or 4-pyridyl which is unsubstituted or substituted by halogen, C -C -alkyl or C -C -alkoxy; 2-thienyl, which is unsubstituted or substituted by C -C -alkyl, C -C - 1 2 1 2 1 2 alkoxycarbonyl; 2-thiazolyl, which is unsubstituted or substituted by halogen, cyano, nitro, C -C -alkyl, C -C -haloalkyl, C -C -alkoxycarbonyl, or phenyl or phenylsulfonyl 1 2 1 2 1 2 which is in turn each unsubstituted opr substituted by halogen, cyano, nitro or methyl; 5- isothiazoyl which is unsubstituted or substituted by halogen or methyl; 2-oxazolyl, which is unsubstituted or substituted by C -C -alkyl or C -C -haloalkyl; or 1,3,4-thiadiazolyl, 1 2 1 2 which is unsubstituted or substituted by C -C -alkyl or C -C -haloalkyl; 2-, 3- or 4- 1 2 1 2 pyridylamino, which is unsubstituted or substituted by halogen, C -C -alkyl or C -C - 1 4 1 2 alkoxy; or (ii) benzoyl, which is unsubstituted or substituted by halogen or 2-, 3- or 4- pyridylcarbonyl which is unsubstituted or substituted by halogen or C1-C4-alkyl; or H C CH (iii) a radical , a radical or indanyl; or (iv) benzothiazolyl, indolyl, chinolinyl, methylenedioxophenyl, benzooxaboronyl, triazolopyrimidinonyl or phthalhydrazidyl, which is each be unsubstituted or substituted by halogen, C -C -alkyl, C -C -haloalkyl or hydroxy; or 1 4 1 2 (v) a radical –H2C-C(O)-NH-CH2-C≡CH, –H2C-C(O)-NH-CH2-CN or –H2C- C(O)-NH-CH -CF or R and Y together with the N-atom to which they are attached, 2 3; form a piperidinyl or piperazinyl radical, which is substituted by methyl; methoxy; halogen-, amino-, methoxy- or trifluoromethyl-substituted phenyl or benzoylamino; or halogen-, trifluoromethyl- and/or cyclopropyl-substituted pyridyl or pyrimidinyl.
A salt of a compound or formula (I) may be produced in known manner. Acid addition salts, for example, are obtainable by treatment with a suitable acid or a suitable ion exchange reagent, and salts with bases are obtainable by treatment with a suitable base or a suitable ion exchange reagent.
Salts of compounds of formula (I) can be converted into the free compounds by the usual means, acid addition salts e.g. by treating with a suitable basic composition or with a suitable ion exchange reagent, and salts with bases e.g. by treating with a suitable acid or a suitable ion exchange reagent.
Salts of compounds of formula (I) can be converted into other salts of compounds of the formula (I) in a known manner; acid addition salts can be converted for example into other acid addition salts, e.g. by treating a salt of an inorganic acid, such as a hydrochloride, with a suitable metal salt, such as a sodium, barium, or silver salt, of an acid, e.g. with silver acetate, in a suitable solvent, in which a resulting inorganic salt, e.g. silver chloride, is insoluble and thus precipitates out from the reaction mixture.
Depending on the method and/or reaction conditions, the compounds of formula (I) with salt-forming characteristics can be obtained in free form or in the form of salts.
Compounds of formula (I) can also be obtained in the form of their hydrates and/or also can include other solvents, used for example where necessary for the crystallisation of compounds present in solid form.
As mentioned before, the compounds of formula (I) may be optionally present as optical and/or geometric isomers or as a mixture thereof. The present disclosure relates both to the pure isomers and to all possible isomeric mixtures, and is hereinbefore and hereinafter understood as doing so, even if stereochemical details are not specifically mentioned in every case.
Diastereoisomeric mixtures of compounds of formula (I), which are obtainable by the process or in another way, may be separated in known manner, on the basis of the physical-chemical differences in their components, into the pure diastereoisomers, for example by fractional crystallisation, distillation and/or chromatography.
Splitting of mixtures of enantiomers, that are obtainable accordingly, into the pure isomers, may be achieved by known methods, for example by recrystallisation from an optically active solvent, by chromatography on chiral adsorbents, e.g. high-pressure liquid chromatography (HPLC) on acetyl cellulose, with the assistance of appropriate micro- organisms, by cleavage with specific immobilised enzymes, through the formation of inclusion compounds, e.g. using chiral crown ethers, whereby only one enantiomer is complexed.
The compounds of the formula (I), wherein n is 0, may be prepared, for example, by reaction of a compound of formula NR - S(O) - T (II) wherein R , R , T and Y are each as defined above and LG is a leaving group, for example halogen such as bromine, with a compound of formula B(OH) (III), in the presence of a palladium catalyst, wherein A is defined above. The details of this palladium-catalyzed carbon-carbon bond forming reaction, called Suzuki reaction, are known from textbooks of organic chemistry.
The compounds of formula (II) are known or may be prepared according to known processes, for example by reacting a compound of formula NR - S(O) - T (IV) with a compound of formula (V), wherein LG’ is a leaving group, for example halogen, C -C -alkoxy or hydroxyl, and the further variables each have the above mentioned meaning. The amide formation from an carboxylic acid or an derivative thereof with an amine is known from textbooks of organic chemistry. The compounds of formula (IV) are known or may be prepared according to known processes, for example by reacting the corresponding amine with methane sulfonyl chloride in known manner. The componds of formula (III) and (V) are known compounds which are commercially available.
Certain compounds of the formula (I), wherein n is 0, may also be prepared, for example, by reaction of a compound of formula NR Y NR - S(O) - T (IIa) wherein R , R , T and Y are each as defined above and LG is a leaving group, for example halogen such as bromine or chlorine, with a compound of formula (IIIa), wherein A* is a heterocyclic radical A and the H-atom is attached to a heteroatom, for example N or O, by way of an electrophilic substitution at the phenyl ring. The compounds of formula (IIa) may be obtained in analogy to the compounds of formula of formula (II) above.
The compounds of the formula (I), wherein n is 1, may be prepared, for example, by reaction of a compound of formula (VI) with a compound of formula (VII), wherein the variables are as defined above, followed by the reduction of the nitro group and further reacting the resulting amine with methane sulfonyl chloride. The details of these reactions are known from textbooks of organic chemistry. The compounds of formula (VI) may be prepared in analogy to the compounds of formula (II). The compounds of formula (VII) are known per se and are commercially available.
The compounds of the formula (I), wherein n is 1 may also be prepared by reaction of a compound of formula (VIII) with a compound of formula (V), wherein the variables each have the above given meaning, followed by the reduction of the nitro group and further reacting the resulting amine with methane sulfonyl chloride. In the alternative, the nitro group of the compound of formula (VIII) may first of all be reduced and the resulting amino group be reacted with methane sulfonyl chloride, before the reaction with the compound of formula (V) is performed.
The compounds of formula (VIII) may be prepared in a manner known per se, for example by reaction of a compound of formula (IX) with a compound of formula (VIIa).
The Examples further illustrate the different synthesis methods.
The compounds of formula (I) according to the present disclosure are notable for their broad activity spectrum and are valuable active ingredients for use in pest control, including in particular the control of endoparasites, especially helminths, in and on warm- blooded animals, especially productive livestock and pets, whilst being well-tolerated by warm-blooded animals and fish.
Productive livestock includes mammals such as, for example, cattle, horses, sheep, pigs, goats, donkeys, rabbits, deer, as well as birds, for example chickens, geese, turkeys, ducks and exotic birds.
Pets include, for example, dogs, cats and hamsters, in particular dogs and cats.
The compounds of formula (I) of the present disclosure are effective against helminths, in which the endoparasitic nematodes and trematodes may be the cause of serious diseases of mammals and poultry. Typical nematodes of this indication are: Filariidae, Setariidae, Haemonchus, Trichostrongylus, Ostertagia, Nematodirus, Cooperia, Ascaris, Bunostonum, Oesophagostonum, Charbertia, Trichuris, Strongylus, Trichonema, Dictyocaulus, Capillaria, Heterakis, Toxocara, Ascaridia, Oxyuris, Ancylostoma, Uncinaria, Toxascaris and Parascaris. The trematodes include, in particular, the family of Fasciolideae, especially Fasciola hepatica (liver fluke).
It could also be shown surprisingly and unexpectedly that the compositions described herein have exceptionally high efficacy against nematodes that are resistant to many active substances. This can be demonstrated, for example in vitro by the LDA test.
Certain pests of the species Nematodirus, Cooperia and Oesophagostonum infest the intestinal tract of the host animal, while others of the species Haemonchus and Ostertagia are parasitic in the stomach and those of the species Dictyocaulus are parasitic in the lung tissue. Parasites of the families and may be found in the internal cell tissue and in the organs, e.g. the heart, the blood vessels, the lymph vessels and the subcutaneous tissue. A particularly notable parasite is the heartworm of the dog, Dirofilaria immitis.
The compounds of formula (I) described herein are highly effective against these parasites.
The pests which may be controlled by the compounds of formula (I) described herein also include those from the class of Cestoda (tapeworms), e.g. the families Mesocestoidae, especially of the genus Mesocestoides, in particular M. lineatus; Dipylidiidae, especially Dipylidium caninum, Joyeuxiella spp., in particular Joyeuxiella pasquali, and Diplopylidium spp., and Taeniidae, especially Taenia pisiformis, Taenia cervi, Taenia ovis, Taeneia hydatigena, Taenia multiceps,Taenia taeniaeformis, Taenia serialis, and Echinococcus spp., most preferably Taneia hydatigena, Taenia ovis, Taenia multiceps, Taenia serialis; Echinococcus granulosus and Echinococcus multilocularis.
Furthermore, the compounds of formula (I) are suitable for the control of human pathogenic parasites. Of these, typical representatives that appear in the digestive tract are those of the genus Ancylostoma, Necator, Ascaris, Strongyloides, Trichinella, Capillaria, Trichuris and Enterobius. The compounds described herein are also effective against parasites of the genus Wuchereria, Brugia, Onchocerca and Loa from the family of Dracunculus and parasites of the genus Strongyloides and Trichinella, which infect the gastrointestinal tract in particular.
The good endoparasiticidal activity of the compounds of formula (I) corresponds to a mortality rate of at least 50-60%, in particular at least 80% and especially at least 90% of the endoparasites mentioned.
Administration of the compounds of formula (I) described herein may be effected therapeutically or preferably prophylactically.
Application of the compounds of formula (I) described herein to the animals to be treated may take place, for example, topically, perorally, parenterally or subcutaneously.
A preferred embodiment described herein relates to compounds of formula (I) for parenteral use or, in particular, for peroral use.
Preferred application forms for usage on warm-blooded animals in the control of nematodes/ helminths comprise solutions; emulsions including classical emulsions, microemulsions and self-emulsifying compositions, that are waterless organic, preferably oily, compositions which form emulsions – together with body fluids - upon addition to an animal body; suspensions (drenches); pour-on formulations; food additives; powders; tablets including effervescent tablets; boli; capsules including micro-capsules; and chewable treats; whereby the physiological compatibility of the formulation excipients must be taken into consideration. Particularly preferred application forms are tablets, capsules, food additives or chewable treats.
The compounds of formula (I) described herein are employed in unmodified form or preferably together with adjuvants conventionally used in the art of formulation and may therefore be processed in a known manner to give, for example, emulsifiable concentrates, directly dilutable solutions, dilute emulsions, soluble powders, powder mixtures, granules or microencapsulations in polymeric substances. As with the compositions, the methods of application are selected in accordance with the intended objectives and the prevailing circumstances.
The formulation, i.e. the agents, preparations or compositions containing the one or more active ingredients and optionally a solid or liquid adjuvant, are produced in a manner known per se, for example by intimately mixing and/or grinding the active ingredients with the adjuvants, for example with solvents, solid carriers and/or surface- active compounds (surfactants).
The solvents in question may be: alcohols, such as ethanol, propanol or butanol, and glycols and their ethers and esters, such as propylene glycol, dipropylene glycol ether, ethylene glycol, ethylene glycol monomethyl or -ethyl ether, ketones, such as cyclohexanone, isophorone or diacetanol alcohol, strong polar solvents, such as N- methylpyrrolidone, dimethyl sulfoxide or dimethylformamide, or water, vegetable oils, such as rape, castor, coconut, or soybean oil, and also, if appropriate, silicone oils.
Suitable surfactants are, for example, non-ionic surfactants, such as, for example, nonylphenolpolyethoxyethanols; castor oil polyglycol ethers, for example macrogol glycerolhydroxystearate 40; polyethylene glycols; polypropylene/polyethylene oxide adducts; or fatty acid esters of polyoxyethylene sorbitan, e.g. polyoxyethylene sorbitan monooleate.
Solid carriers, for example for tablets and boli, may be chemically modified polymeric natural substances that are soluble in water or in alcohol, such as starch, cellulose or protein derivatives (e.g. methyl cellulose, carboxymethyl cellulose, ethylhydroxyethyl cellulose, proteins such as zein, gelatin and the like), as well as synthetic polymers, such as polyvinyl alcohol, polyvinyl pyrrolidone etc. The tablets also contain fillers (e.g. starch, microcrystalline cellulose, sugar, lactose etc.), glidants and disintegrants.
If the anthelminthics are present in the form of feed concentrates, then the carriers used are e.g. performance feeds, feed grain or protein concentrates. Such feed concentrates or compositions may contain, apart from the active ingredients, also additives, vitamins, antibiotics, chemotherapeutics or other pesticides, primarily bacteriostats, fungistats, coccidiostats, or even hormone preparations, substances having anabolic action or substances which promote growth, which affect the quality of meat of animals for slaughter or which are beneficial to the organism in another way.
Suitable compositions of the compounds of formula (I) may also contain further additives, such as stabilisers, antioxidants, for example tocopherols like α-tocopherol, anti-foaming agents, viscosity regulators, binding agents, colors or tackifiers, as well as other active ingredients, in order to achieve special effects. Preferably, the composition comprises from 0.001 to 1 % w/v of one or more antioxidants. If desired, the formulations described herein may comprise a color, for example in an amount of from 0.001 to 1 % w/v.
As a rule, an anthelminthic composition described herein contains 0.1 to 99 % by weight, especially 0.1 to 95 % by weight of a compound of formula (I), 99.9 to 1 % by weight, especially 99.8 to 5 % by weight of a solid or liquid admixture, including 0 to % by weight, especially 0.1 to 25 % by weight of a surfactant.
In each of the processes described herein for pest control or in each of the pest control compositions described herein, the compounds of formula (I) can be used in all of their steric configurations or in mixtures thereof.
Also described is a method of prophylactically protecting warm-blooded animals, especially productive livestock and pets, in particular dogs or cats, against parasitic helminths, which is characterised in that a compound of formula (I) or the active ingredient formulation prepared therefrom is administered to the warm-blooded animal as an additive to the feed, or to the drinks or also in solid or liquid form, orally or by injection or parenterally. Also described are compounds of formula (I) described herein for usage in one of the said processes.
The compounds of formula (I) described herein may be used alone or in combination with other biocides. They may be combined with pesticides having the same sphere of activity e.g. to increase activity, or with substances having another sphere of activity e.g. to broaden the range of activity. It can also be sensible to add so-called repellents.
The following Examples illustrate the invention further.
Analysis of the purified samples is in each case done using a Waters Autopurification (HPLC/MS) system with a reversed phase column using method B described below. The samples are characterized by m/z and retention time. The above- given retention times relate in each case to the use of a solvent system comprising two different solvents, solvent A: H O + 0.01% HCOOH, and solvent B: CH CN + 0.01% HCOOH).
- Method B: column Waters XTerra MS C18 5μm, 50X4.6mm (Waters), flow rate of 3.00 mL/min with a time-dependent gradient as given in the Table: Time [min] A [%] B [%] 0 90 10 0.5 90 10 2.5 5 95 2.8 5 95 2.9 90 10 3.0 90 10 Example 1A Synthesis of 2-(methylsulfonamido)morpholino-N-(3,4,5-trichlorophenyl)benzamide (Ex.1.2 in Table 1) Step A: 5-chloronitro-N-(3,4,5-trichlorophenyl) benzamide. -chloronitrobenzoic acid (10 g) was treated with thionyl chloride (7.2 mL) at reflux for 4h. Excess SOCl2 was removed under vacuum. CH2Cl2 (100 mL) was added to the acyl chloride. At 0°C, 3,4,5-trichloroaniline (9.7 g) and NEt (13.8 mL) in 100 mL CH2Cl2 were added slowly. The reaction mixture was allowed to warm up and it was stirred at rt (room temperature) overnight. The reaction mixture was diluted with 200 mL diethyl ether. 10 mL HCl 2 N and 200 mL H2O were added, and the mixture was stirred until a yellow precipitate is formed. The precipitate was filtered off and dried under high vacuum before analysis (yield: 66%). LCMS (method B): 380.59 (M+H) at 1.97 min.
Step B: 5-morpholinonitro-N-(3,4,5-trichlorophenyl)benzamide To a solution of 300 mg of 5-chloronitro-N-(3,4,5-trichlorophenyl)benzamide in 1.5 mL DMF, was added morpholine (206 μL). The reaction mixture was heated at 110°C for 1.5 h. After work-up and extraction with AcOEt, the mixture was evaporated to dryness.
The title compound was pure enough to be engaged in step B. (yield: 71%). LCMS (method B): 427.7 (M-H) at 1.81 min.
Step C: 2-aminomorpholino-N-(3,4,5-trichlorophenyl)benzamide Under N , 5-morpholinonitro-N-(3,4,5-trichlorophenyl)benzamide (230 mg) in 4 mL EtOH/H O (3/1) was treated with Fe (208 mg) and HCl 25% (4 μL) and the reaction mixture was stirred at rt for 4 h. When the reduction was completed, the reaction mixture was filtered on a plug of celite and washed with ethyl acetate. The filtrate was evaporated under vacuum. Ethyl acetate was added, and the organic layer was washed with brine, dried over MgSO , and evaporated to dryness (yield: 95%). LCMS (method B): 399.68 (M+H) at 1.61 min.
Step D: 2-(methylsulfonamido)morpholino-N-(3,4,5-trichlorophenyl)benzamide A N degassed solution of 2-aminomorpholino-N-(3,4,5-trichlorophenyl)benzamide (193 mg) in 3 mL CH2Cl2, pyridine (0.194 mL) was added. The mixture was cooled to 0°C before the drop wise addition of methane sulfonyl chloride (0.037 mL). The reaction mixture was stirred overnight at rt, then diluted with 50 mL ethyl acetate. The organic layer was washed with a saturated solution of Na CO , with brine, then dried over MgSO 2 3 4 and evaporated to dryness (yield: 43%). LCMS (method B): 477.7 (M+H) at 1.78 min.
Example 1B N-(3,5-bis (trifluoromethyl) phenyl)(2-fluoropyridinyl)(methylsulfonamido) benzamide (Ex.1.14 in Table 1) Step A: methyl 5-bromo(methylsulfonamido) benzoate.
A N degassed solution of methyl 2-aminobromobenzoate (2.8 g) in 10 mL 1 pyridine was cooled to 0°C before the drop wise addition of methane sulfonyl chloride (0.9 mL).
The reaction mixture was stirred overnight at rt, then diluted with 50 mL ethyl acetate.
The organic layer was washed with a saturated solution of Na CO , with brine, then dried over MgSO and evaporated to dryness (yield: 82%). LCMS (method B): 305.6 (M-H) at 1.55 min.
Step B: 5-bromo(methylsulfonamido)benzoic acid Methyl 5-bromo(methylsulfonamido) benzoate (3.15 g) was suspended in THF (20 mL, 1/1). NaOH 4 N (6.9 mL) was added and the reaction mixture was stirred 4h at reflux. Upon completion, the reaction mixture was treated with 2N HCl (1mL) and extracted twice with ethyl acetate. Combined organic layers were washed with H O, brine, dried over Na SO , filtered and evaporated to dryness. The title product was pure enough by LCMS to be engaged into next step without further purification. (yield: 66%) LCMS (method B): 291.64 (M-H) at 1.2 min.
Step C: N-(3,5-bis(trifluoromethyl)phenyl)bromo(methylsulfonamido)benzamide. 5-bromo(methylsulfonamido) benzoic acid (2.4 g) was treated with thionyl chloride (23 mL) at reflux for 4h. Excess SOCl was removed under vacuum. CH Cl (20 mL) was 2 2 2 added to the acyl chloride. At 0°C, 3,5-bis(trifluoromethly)aniline (1.4 mL) and NEt (5.68 mL) in 10 mL CH Cl were added slowly. The reaction mixture was allowed to warm up and it was stirred at rt overnight.
The reaction mixture was diluted with 30 mL CH Cl . 20 mL HCl 2 N and 20 mL H O 2 2 2 were added, and the mixture was stirred until a yellow precipitate is formed. The precipitate was filtered off and dried under high vacuum before analysis (yield: 67%).
LCMS (method B): 502.93 (M-H) at 1.99 min.
Step D: N-(3,5-bis (trifluoromethyl) phenyl)(2-fluoropyridinyl) (methylsulfonamido) benzamide.
To a solution of N-(3,5-bis(trifluoromethyl)phenyl)bromo(methylsulfonamido) benzamide (0.2 g) and 2-Fluoro(4,4,5,5-tetramethyl-1,3,2-dioxaborolanyl)pyridine (133 mg) under N in dioxane/H O (6 mL, 1/1) was added Na CO (252 mg), 2 2 2 3 Pd(dppf)Cl .CH Cl (355 mg). The reaction mixture was stirred for 3h at 80°C. It was 2 2 2 diluted with ethyl acetate, filtered through celite. The filtrate was washed with H O, brine, dried over Na SO , filtered and evaporated to dryness.
The crude mixture was purified by flash chromatography eluting with a gradient of 100% heptane to 60% heptane/40% ethyl acetate to offer the title compound in 25% yield.
LCMS (method C): 521.8 (M+H) at 1.90 min.
The substances named in the following Table 1 are prepared analogously to the above-described methods. The compounds are of formula (R ) NH-SO CH wherein the meaning of A and (R) is given in Table 1.
The following physical data are obtained according to the above-described HPLC/MS characterization process (method B). R refers to “retention time”.
Table 1: Ex. m/z: R [min] Physical A (R ) No. [M+H ] (Method B) state 1.2 Morpholinyl 3,4,5-tri-Cl 477.7 1.78 Solid 1.3 4-Methylpiperazinyl 3,4,5-tri-Cl 490.9 1.29 Solid 1.4 Thiazinyl 3,4,5-tri-Cl 493.7 1.97 Solid 1.5 Pyrrolidinyl 3,4,5-tri-Cl 461.7 2.04 Foam 1.6 Pyrazolyl 3,4,5-tri-Cl 458.8 1.89 Powder 1.7 Isopropyl 3,5-di-CF3 468.8 2.07 Powder 1.8 CF 3,5-di-CF 494.5 1.99 Oil 1.9 3,5-di-CF 552.9 2.22 Powder 3,5-di-CF 1.10 3 550.7 1,99 Powder 3,5-di-CF3 1.11 534.8 1.78 Solid 1.12 506.7 1.79 Powder 3,5-di-CF 1.13 607.9 1.27 Resin 3,5-di-CF3 3,5-di-CF 1.14 521.8 1.90 Powder 1.15 3,5-di-CF 542.8 1.85 Powder 1.16 521.7 1.94 Powder 3,5-di-CF 1.17 571.7 2.06 Foam 3,5-di-CF 3,5-di-CF 1.18 537.7 2.00 Powder 3,5-di-CF 1.19 571.6 2.10 Powder 1.20 551.7 2.06 Powder 3,5-di-CF H CÔ 1.21 533.7 2.02 Powder 3,5-di-CF 1.22 538.7 1.93 Powder 3,5-di-CF N 3,5-di-CF H CÔ 1.23 534.7 1.85 Powder 1.24 504.8 1.71 Powder 3,5-di-CF 1.25 537.8 1.90 Solid 3,5-di-CF N 3,5-di-CF 1.26 537.8 1.89 Foam H C-H C-Ô 1.27 548.0 2.08 Powder 3,5-di-CF 1.28 529.0 1.89 Powder 3,5-di-CF 3,5-di-CF 1.29 537.9 1.94 Powder 1.30 542.9 2.28 Powder 3,5-di-CF3 1.31 572.9 2.11 Powder 3,5-di-CF3 3,5-di-CF3 1.32 571.8 2.05 Powder 3,5-di-CF 1.33 537.7 1.99 Resin Example 2 -phenoxy(phenylsulfonamido)-N-(3,4,5-trichlorophenyl)benzamide (Ex.2.2 in Table 2) Step A: 2-nitrophenoxy-N-(3,4,5-trichlorophenyl)benzamide.
-Chloronitro-N-(3,4,5-trichlorophenyl) benzamide (29.1 g), K CO (21.3 g) and phenol (8 g) in DMA were heated at 140°C during 14h. The reaction mixture was poured in H O (100 mL), the precipitate was filtered off, dried under high vacuum to afford a brown solid (yield: 80%). LCMS (method B): 436.6 (M-H) at 2.14 min.
Step B: 2-aminophenoxy-N-(3,4,5-trichlorophenyl)benzamide 2-nitrophenoxy-N-(3,4,5-trichlorophenyl)benzamide treated with iron in a similar manner as described for step C Example 1 (yield: 27%). LCMS (method B): 406.7 (M+H) at 2.28 min.
Step C: 5-(4-Chlorophenoxy)(methylsulfonamido)-N-(3,4,5-trichlorophenyl) benzamide To N degassed solution of 2-aminophenoxy-N-(3,4,5- trichlorophenyl)benzamide (0.26 mg) in 2mL of CH Cl , pyridine (0.25 mL) was added.
The mixture was cooled to 0°C before the drop wise addition of benzene sulfonyl chloride (0.124 mg). The reaction mixture was stirred overnight at rt, then diluted with additional mL CH2Cl2. The organic layer was washed with a saturated solution of Na2CO3, with brine, then dried over MgSO and evaporated to dryness (yield: 81%). LCMS (method B): 546.7 (M+H) at 2.39 min.
The substances named in the following Table 2 are prepared analogously to the above-described methods. The compounds are of formula NR -SO T wherein the meaning of (R ) , (R) , and X are given in Table 2 The following physical data are obtained according to the above-described HPLC/MS characterization process (Method B).
Table 2: m/z: Physical (R) T [M+H ] state [min] 4-Cl 4-CH -phenyl 2.1 594.6 2.22 Powder 2.2 H phenyl 546.7 2.39 Powder 2.3 4-Cl 2-NO CF -phenyl 693.6 1.88 Gum 2.4 4-Cl 3-ClF-phenyl 632.5 2.57 Solid 2.5 4-Cl 2-CF3F-phenyl 666.5 2.59 Solid 2.6 4-Cl 4-CF -phenyl 648.5 2.58 Solid 2.7 4-Cl 3,4-dimethoxyphenyl 640.6 2.40 Solid 2.8 4-Cl 4-nitrophenyl 625.5 2.46 Solid 2.9 4-Cl 4-chlorophenyl 614.7 2.59 Solid 2.10 4-Cl 3,5-di-Cl-phenyl 2.78 Solid 648.5 2.11 4-Cl 4-methoxyphenyl 610.6 2.46 Solid 2.12 4-Cl 2-Chloro-phenyl 614.5 2.57 Solid 2.13 4-Cl 3-Chlorophenyl 614.7 2.60 Solid 2.14 4-Cl 3-Pyridyl 581.6 2.31 Solid 2.15 4-Cl 3-methoxyphenyl 610.6 2.49 Solid 4-Cl 3,4-dichlorophenyl H 2.16 648.5 2.71 Solid 4-Cl 2,6-dichlorophenyl H 2.17 648.6 2.66 Solid 4-Cl 2-methoxyphenyl H 2.18 610.6 2.43 Solid 4-Cl 2,4-dichlorophenyl H 2.19 648.6 2.74 Solid 4-Cl 2-NO OCH -phenyl H 2.20 655.5 2.42 Powder 4-Cl 2,4-dimethoxyphenyl H 2.21 640.6 2.41 Solid 4-Cl ethyl H 2.22 532.5 2.37 Solid 4-Cl -CH CF H 2.23 586.4 2.39 Powder 4-Cl -CH CH CF H 2 2 3 2.24 598.5 2.47 Solid 4-Cl n-propyl H 2.25 2.44 Solid 546.6 4-Cl n-butyl H 2.26 560.7 2.52 Solid 4-Cl Iso-butyl H 2.27 560.7 2.51 Powder 4-Cl -CH CH Si(CH ) H 2 2 3 3 2.28 604.7 2.68 Powder 4-Cl Cyclopropyl H 2.29 544.6 2.36 Powder 4-Cl Cyclohexyl H 2.30 586.6 2.65 Powder 4-Cl 1-(benzyloxycarbonyl)- H 2.31 721.8 2.54 Powder piperazinyl 4-Cl Isopropyl H 2.32 546.6 2.23 Solid 4-Cl Cyclohexylmethyl H 2.33 600.6 2.74 Solid 4-Cl (1R)-(-)-Campher H 2.34 654.7 2.57 Solid 4-Cl -CH C(O)OC H H 2 2 5 2.35 590.6 2.36 Solid 4-Cl -CH C(O)OCH H 2.36 576.6 2.29 Foam 4-Cl -CH C(O)OH H 2.37 2.16 Solid 562.5 4-Cl (1S)-(+)-Campher H 2.38 654.8 2.55 Solid 4-Cl Tetrahydro-2H-pyranyl H 2.39 588.6 2.33 Solid 4-Cl -N(CH ) H 2.40 547.6 2.40 Powder 4-Cl 1-Methylpiperazinyl H 2.41 602.8 1.72 Powder 4-Cl O H 2.42 637.6 2.24 Powder 4-Cl -CH -Cl -SO CH Cl 2 2 2 2.43 664.4 2,44 Solid 4-Cl 2.44 644.6 1.52 Powder CH N N CH H 4-Cl 2.45 775.6 2.63 Powder CH N N CF H 4-Cl 2.46 757.8 1.59 Powder NO H N N CH 4-Cl 2.47 744.7 2.41 Powder O CH H N N CH CH 3 4-Cl 2.48 740.6 2.68 Powder CH N N Cl H Example 3 2-(methylsulfonamido)-N-(3,4,5-trichlorophenyl)((2-(trifluoromethyl)pyridin yl)oxy)benzamide (Ex 3.2 in Table 3) Step A: methyl 2-nitro((2-(trifluoromethyl) pyridinyl)oxy)benzoate.
Methyl 5-chloronitrobenzoate was treated in a similar manner as step A of synthesis of example 3 (yield: 28%). LCMS (method B): 342.86 (M+H) at 1.63 min.
Step B: 2-nitro((2-(trifluoromethyl) pyridinyl)oxy)benzoic acid.
Methyl 2-nitro((2-(trifluoromethyl) pyridinyl)oxy)benzoate (277 mg) was treated overnight at rt with NaOH 1N (4.13 mL) in THF/MeOH (8 mL, 2/1) (yield: 98%). LCMS (method B): 328.84 (M+H) at 1.33 min.
Step C: 2-nitro -N- (3,4,5-trichlorophenyl) ((2-(trifluoromethyl)pyridinyl)oxy) benzamide 2-nitro((2-(trifluoromethyl) pyridinyl) oxy) benzoic acid was treated in a similar manner as step A of synthesis of example 1 (yield: 45%). LCMS (method B): 505.7 (M+H) at 2.05 min.
Step D: 2-amino -N- (3,4,5-trichlorophenyl) ((2-(trifluoromethyl) pyridine yl)oxy) benzamide 2-nitro-N-(3,4,5-trichlorophenyl)((2-(trifluoromethyl) pyridinyl) oxy) benzamide was treated in a similar manner as step C Example 1 (yield: 100%). LCMS (method B): 475.52 (M+H) at 2.21 min.
Step E: 2-(methylsulfonamido)-N-(3,4,5-trichlorophenyl)((2-(trifluoromethyl)pyridin- 3-yl)oxy) benzamide 2-amino-N-(3,4,5-trichlorophenyl)((2-(trifluoromethyl) pyridine - 3- yl) oxy) benzamide was treated in a similar manner as step D of synthesis of example 1 (yield: 20%). LCMS (method C): 553.7 (M+H) at 2.07 min.
The substances named in the following Table 3 are prepared analogously to the above-described methods. The compounds are of formula NH-SO CH wherein the meaning of A given in Table 3. The following physical data are obtained according to the above-described HPLC/MS characterization process.
Table 3: m/z: [M+H ] R [min] R [min] (Method) (Method) 3.1 556.7 2.09 (B) Solid 3.2 553.7 2.07 (B) Solid 3.3 N 551.7 3.95 (A) Foam 3.4 558.8 2.95 (C) Solid Example 4 -(4-chlorophenoxy)(methylsulfonamido)-N-(4-(trifluoromethyl)oxazol yl)benzamide (Ex 4.16 in Table 4) Step A: methyl 5-(4-chlorophenoxy)nitrobenzoate methyl 5-chloronitrobenzoate was treated in a similar manner as step A of synthesis of example 3 (yield: 90%). LCMS (method B): 305.0 (M+H) at 1.67 min.
Step B: methyl 2-amino(4-chlorophenoxy) benzoate methyl 5-(4-chlorophenoxy)nitrobenzoate was treated in a similar manner as step C Example 1 (yield: 100%). LCMS (method B): 277.82 (M+H) at 1.88 min.
Step C: methyl 5-(4-chlorophenoxy)(methylsulfonamido) benzoate methyl 2-amino(4-chlorophenoxy)benzoate was treated in a similar manner as step D of synthesis of example 1 (yield: 95%). LCMS (method B): 353.78 (M-H) at 1.84 min.
Step D: 5-(4-chlorophenoxy)(methylsulfonamido) benzoic acid methyl 5-(4-chlorophenoxy)(methylsulfonamido)benzoate was saponified in a similar manner as step B of synthesis of example 4 (yield: 96%). LCMS (method B): 339.62 (M- H) at 1.61 min.
Step E: 5-(4-chlorophenoxy)(methylsulfonamido)-N-(4-(trifluoromethyl) oxazol yl)benzamide -(4-chlorophenoxy)(methylsulfonamido) benzoic acid was treated in a similar manner as step A of synthesis of example 1 (yield: 3%). LCMS (method B): 475.64 (M+H) at 1.70 min.
The substances named in the following Table 4 are prepared analogously to the above-described methods. The compounds are of formula NH-SO -CH Cl 2 3 wherein the meaning of Y and R is given in Table 4. The following physical data are obtained according to the above-described HPLC/MS characterization process (Method Table 4: m/z: R [min] R [min] Y R [M+H ] (Method) (Method B) 4.1 503.7 1.94 Powder 4.2 447.7 1.99 Solid 4.3 482.6 1.94 Solid C(O)OC H 4.4 495.6 1.76 Solid 4.5 423.6 1.69 Solid 4.6 468.6 1.79 Powder 4.7 492.7 1.83 Solid 4.8 487.6 1.99 Solid N 3 H 4.9 509.7 1.95 Solid C(O)OC H 4.10 608.6 1.85 Solid SO NO C(O)OC H 4.11 508.6 2.32 Solid 4.12 563.6. 2.00 Solid C(O)OC H 4.13 540.5 2.05 N H Solid H Solid 4.14 571.7 2.20 C(O)OC H 4.15 437.7 1.67 H Solid 4.16 475.6 1.70 Oil 4.17 417.8 1.45 N H Oil 4.18 447.7 2.20 H Oil H Oil 4.19 465.7 1.47 N H Oil 4.20 451.7 1.71 H Oil 4.21 485.8 1.90 4.22 431.7 1.25 Powder 4.23 496.9 2.06 Foam 4.24 541.7 2.07 Solid 4.25 3 543.8 2.09 Solid 4.26 O 472.7 1.62 Solid 4.27 455.8 1.71 Solid 4.28 H 467.8 1.73 Solid 4.29 475.8 1.51 Solid 4.30 500.8 1.77 Solid Cl CF H Solid 4.31 567.6 2.08 H Solid 4.32 510.7 1.78 Cl Cl 4.33 533.6 2.09 Oil 4.34 479.7 1.89 Powder N Cl H Oil 4.35 461.8 1.78 H Oil 4.36 465.7 1.82 4.37 499.7 1.89 H Oil N Cl 4.38 456.7 1.65 H Oil 4.39 509.7 1.75 H Oil N CH 4.40 423.7 0.61 Powder N OCH 4.41 515.7 1.67 Foam 4.42 595.7 1.93 Powder O OCH 4.43 636.8 1.62 Solid 4.44 435.7 1.48 H C N 2 H Solid 4.45 479.7 1.56 H C N CF H Solid 4.46 436.7 1.46 H C N 2 H Solid H Oil 4.47 480.7 1.74 Solid 4.48 512.7 1.85 4.49 456.8 1.95 H Resin H Solid 4.50 513.7 1.76 H C CH 3 3 H Foam 4.51 477.0 3.09 4.52 434.8 2.02 OH Solid 4.53 481.7 3.27 Biological Examples: Gastro-intestinal Larval Development Assay Freshly harvested and cleaned nematode eggs are used to seed a suitably formatted well plate containing the test substances to be evaluated for antiparasitic activity and media allowing the full development of eggs through to 3rd instar larvae. The plates are incubated for 6 days at 25°C and 60% relative humidity. Egg-hatching and ensuing larval development are recorded to identify a possible nematodicidal activity.
Efficacy is expressed in percent reduced egg hatch, reduced development of L3, or paralysis & death of larvae at any stage. Compounds Nos. 1.4, 1.10-1.12, 1.14, 1.16-1.21, 1.23, 1.25-1.26, 1.29-1.33, 2.1, 2.22, 2.28, 2.42-2.43, 3.1-3.2, 4.1, 4.3-4.8, 4.19-4.24, 4.28, 4.32, 4.34, 4.36-4.37, 4.39, 4.42-4.43 and 4.51 reached ≥ 60% efficacy at 10ppm, and are therefore considered active.
Dirofilaria immitis microfilaria assay Freshly harvested and cleaned Dirofilaria immitis microfilariae are prepared from blood from donor animals dogs. The microfilariae are then distributed in formatted microplates containing the test substances to be evaluated for antiparasitic activity. The plates are incubated for 48 hours at 25°C and 60% relative humidity (RH). Motility of microfilariae is then recorded to determine efficacy. Efficacy is expressed in percent reduced motility as compared to the control and standards. Compounds Nos. 1.2-1.4 and 1.6 to 1.33, 2.1-2.20, 2.22-2.44, 2.46, 3.1-3.4, 4.1-4.10, 4.12-4.16, 4.17-4.18, 4.21-4.29, 4.31-4.39, 4.42 and 4.46-4.52 showed an efficacy above 50% at 10 ppm, and are therefore considered active.
Acanthocheilonema viteae in Gerbil Gerbils are artificially infected with 80 L3 larvae of A. viteae by subcutaneous injection. Treatment by gavage with the formulated test compounds occurs consecutively day 5 to day 9 after infection. Eighty-four days after infection, gerbils are bled for counting circulating microfilariae, using a Fuchs-Rosenthal counting chamber and microscope. Only test groups with an average of circulating microfilariae at least 50% lower than in the placebo treated group are fully dissected to recover adult worms.
Efficacy is expressed as a % reduction in worm numbers in comparison with the placebo treated group, using the Abbot’s formula. Compound No. 1.6-1.8, 1.17, 1.25, 1.30, 1.32, 2.24, 4.13, 4.24 showed an efficacy above 80% at 10 mg/kg.
Adult liver fluke-in vitro assay Freshly harvested adult Fasciola hepatica from cattle or sheep livers were distributed in 12-well plates (1 fluke per well) with 4 mL of RPMI complete medium and kept in an incubator at 37°C for approximately 12 hours. After renewal of the medium, the viability of the flukes is determined by video-registration of the movement of the individual flukes (pre-value). Test compounds are added at a concentration of 100 µg/mL and the movements of the flukes are measured after 6 and 24 hours. Efficacy is expressed as percent reduced movement based on the pre-value and the untreated control. In this test the following examples showed more than >90% efficacy after 6 h and >95% after 24 h are considered as positive: 2.2, 4.13.
The term “comprising” as used in this specification and claims means “consisting at least in part of”. When interpreting statements in this specification, and claims which include the term “comprising”, it is to be understood that other features that are additional to the features prefaced by this term in each statement or claim may also be present.
Related terms such as “comprise” and “comprised” are to be interpreted in similar manner.
In this specification where reference has been made to patent specifications, other external documents, or other sources of information, this is generally for the purpose of providing a context for discussing the features of the invention. Unless specifically stated otherwise, reference to such external documents is not to be construed as an admission that such documents, or such sources of information, in any jurisdiction, are prior art, or form part of the common general knowledge in the art.
In the description in this specification reference may be made to subject matter that is not within the scope of the claims of the current application. That subject matter should be readily identifiable by a person skilled in the art and may assist in putting into practice the invention as defined in the claims of this application.

Claims (10)

WE CLAIM :
1. A compound of formula NR Y NR - S(O ) - T (I), or a salt or an enantiomer thereof, wherein n is 0 or 1; A is C -C -cycloalkyl; C -C -halocycloalkyl; 5- or 6-membered heterocycloalkyl 3 6 3 6 having from 1 to 3 same or different heteroatoms selected from the group consisting of B, 10 N, O and S, which is further unsubstituted or substituted by halogen, C -C -alkyl or C - 1 4 1 C -alkoxy; or is cinnamyl, which is unsubstituted or substituted in the phenyl moiety by halogen, C -C -alkyl or C -C -alkoxy; or is a heteroaromatic radical, which is further 1 4 1 4 unsubstituted or substituted by halogen, cyano, C -C -alkyl, C -C -haloalkyl, C -C - 1 4 1 4 1 4 alkoxy, C -C -haloalkoxy, C -C -alkanoyl, 5- or 6-membered heterocycloalkyl-C -C - 1 4 2 4 1 2 15 alkyl or unsubstituted or halogen-, C -C -alkyl- or C -C -alkoxy-substituted phenyl; or is 1 4 1 4 a hetero-bicyclic ring radical comprising a total of 8 to 10 ring members, from which 1 to 5 members are same or different heteroatoms selected from the group consisting of B, N, O and S, and from which 0 to 2 members are a group –C(O)-, which bicyclic ring radical is further unsubstituted or substituted by halogen, cyano, hydroxyl, C -C -alkyl or C -C - 1 4 1 4 20 haloalkyl; R is H or –S(O )-T; T is C -C -alkyl which is unsubstituted or substituted by halogen, trimethylsilyl, C -C -cycloalkyl, carboxyl or C -C -alkoxycarbonyl; C -C -cycloalkyl; C -C - 3 6 1 4 3 6 6 12 bicarbocyclyl; a 5- or 6 membered heteroaromatic radical, which is further unsubstituted 25 or substituted by halogen, cyano, nitro, C -C -alkyl, C -C -haloalkyl or C -C -alkoxy; 5- 1 4 1 4 1 4 or 6-membered heterocycloalkyl having from 1 to 3 same or different heteroatoms selected from the group consisting of N, O, S and S(O ), which is further unsubstituted or substituted by C -C -alkyl, C -C -alkoxycarbonyl or benzyloxycarbonyl ; a group 1 4 1 2 CHNN R ; amino; or N-mono- or N,N-di- C -C -alkylamino; R is C -C -alkyl, unsubstituted or halogen-, C -C -alkyl- or C -C -haloalkyl- 1 4 1 4 1 4 substituted phenyl, unsubstituted or halogen-, C -C -alkyl- or C -C -haloalkyl-substituted 1 4 1 4 5 pyridyl, C -C -alkoxycarbonylmethyl or morpholinyl-carbonylmethyl; R is H or hydroxy; and Y is (i) phenyl or a phenylamino, which is substituted by one or more same or different radicals selected from the group consisting of halogen; C -C -alkyl; C -C -haloalkyl; C - 1 6 1 6 3 10 C -cycloalkyl; C -C -halocycloalkyl; hydroxyl; C -C -alkoxy; C -C -haloalkoxy; C -C - 6 3 6 1 6 1 6 1 6 alkylthio; C -C -haloalkylthio; C -C -alkyl-sulfinyl; C -C -haloalkylsulfinyl; C -C - 1 6 1 6 1 6 1 6 alkylsulfonyl; C -C -haloalkylsulfonyl; SF ; amino; N-mono- or N,N-di-C -C - 1 6 5 1 6 alkylamino; tri-C -C -alkylsilyl; C -C -alkoxycarbonyl; aminocarbonyl; N-mono- or 1 4 1 6 N,N-di-C -C -alkylaminocarbonyl; aminosulfonyl; N-mono- or N,N-di-C -C - 1 6 1 6 15 alkylaminosulfonyl; N-C -C -alkylsulfonylamino; C -C -alkoxycarbonylamino; N-C -C - 1 6 1 6 1 4 alkyl-N-C -C -alkoxycarbonylamino; cyano; nitro; and halogen-, C -C -alkyl-, C -C - 1 6 1 4 1 4 haloalkyl-, C -C -alkoxy-, C -C -haloalkoxy-, amino-, cyano- or nitro-substituted C -C - 1 4 1 4 3 6 heterocyclyl; or is (ii) 5- or 6 membered heteroaryl or heteroarylamino, which is each further 20 unsubstituted or substituted by halogen, cyano, nitro, C -C -alkyl, C -C -haloalkyl, C - 1 4 1 4 1 C -alkoxy, C -C -alkoxycarbonyl, C -C -alkanoyl, or phenyl or phenylsulfonyl which is 4 1 4 2 4 each unsubstituted or substituted by halogen, cyano, nitro, methyl or methoxy; or is (iii) benzoyl or 5- or 6 membered heteroarylcarbonyl, which is each further unsubstituted or substituted by halogen, cyano, nitro, C -C -alkyl, C -C -haloalkyl, C - 1 4 1 4 1 25 C -alkoxy, C -C -alkoxycarbonyl, C -C -alkanoyl or phenyl; or is 4 1 4 2 4 (iv) a C -C -bicarbocyclic radical; or is a 6 12 (v) a radical –H C-C(O)-NH-R , wherein R is C -C -haloalkyl, C -C -alkynyl or 2 1 4 2 3 cyano-C1-C4-alkyl; or R and Y together with the N-atom to which they are attached, form a piperidinyl or piperazinyl radical which is substituted by C -C -alkyl, C -C -alkoxy, unsubstituted or 1 4 1 4 halogen-, C -C -alkyl-, C -C -haloalkyl-, amino- and/or C -C -alkoxy-substituted phenyl 1 4 1 4 1 4 or benzoylamino, or unsubstituted or C -C -alkyl-, C -C -haloalkyl-, C -C -cycloalkyl- or 1 4 1 4 3 6 5 halogen-substituted pyridyl or pyrimidinyl.
2. A compound according to claim 1 of formula NH-SO CH (Ia), wherein Y’ is phenyl which is substituted by one or more same or different radicals 10 selected from the group consisting of halogen; C -C -alkyl; C -C -haloalkyl; C -C - 1 6 1 6 3 6 cycloalkyl; C -C -halocycloalkyl; hydroxyl; C -C -alkoxy; C -C -haloalkoxy; C -C - 3 6 1 6 1 6 1 6 alkylthio; C -C -haloalkylthio; C -C -alkyl-sulfinyl; C -C -haloalkylsulfinyl; C -C - 1 6 1 6 1 6 1 6 alkylsulfonyl; C -C -haloalkylsulfonyl; SF ; amino; N-mono- or N,N-di-C -C - 1 6 5 1 6 alkylamino; tri-C -C -alkylsilyl; C -C -alkoxycarbonyl; aminocarbonyl; N-mono- or 1 4 1 6 15 N,N-di-C -C -alkylaminocarbonyl; aminosulfonyl; N-mono- or N,N-di-C -C - 1 6 1 6 alkylaminosulfonyl; N-C -C -alkylsulfonylamino; C -C -alkoxycarbonylamino; N-C -C - 1 6 1 6 1 4 alkyl-N-C -C -alkoxycarbonylamino; cyano; nitro; halogen-, C -C -alkyl-, C -C - 1 6 1 4 1 4 haloalkyl-, C -C -alkoxy-, C -C -haloalkoxy-, amino-, cyano- or nitro-substituted C -C - 1 4 1 4 3 6 heterocyclyl; and 20 A’ is C -C -cycloalkyl; C -C -halocycloalkyl; 5- or 6-membered heterocycloalkyl 3 6 3 6 having from 1 to 3 same or different heteroatoms selected from the group consisting of B, N, O and S, which is further unsubstituted or substituted by halogen, C -C -alkyl or C - 1 4 1 C -alkoxy; a heteroaromatic radical, which is further unsubstituted or substituted by halogen, cyano, C -C -alkyl, C -C -haloalkyl, C -C -alkoxy, C -C -haloalkoxy, C -C - 1 4 1 4 1 4 1 4 1 4 25 alkanoyl, 5- or 6-membered heterocycloalkyl-C -C -alkyl or unsubstituted or halogen-, C -C -alkyl- or C -C -alkoxy-substituted phenyl; or is a hetero-bicyclic ring radical 1 4 1 4 comprising a total of 8 to 10 ring members, from which 1 to 5, members are same or different heteroatoms selected from the group consisting of B, N, O and S, and from which 0 to 2 members are a group –C(O)-, which bicyclic ring radical is further unsubstituted or substituted by halogen, cyano, hydroxyl, C -C -alkyl or C -C -haloalkyl. 1 4 1 4
3. A compound according to claim 2, wherein Y’ is phenyl which is substituted by 2 5 or 3 same or different radicals selected from halogen or CF ; and A’ is pyrrolidinyl, piperazinyl, morpholinyl or dioxaborolanyl, which is each unsubstituted or substituted by methyl; pyrryl, pyrazolyl, triazolyl, thienyl, thiazinyl, thiazolyl, pyridyl or pyrimidinyl , which is each unsubstituted or substituted by halogen, cyano, C -C -alkyl, C -C -alkoxy, 1 2 1 2 C -C -haloalkyl, acetyl, propionyl, phenyl or morpholinyl-methyl; or indolyl, 10 benzopyrazolyl or benzothiazolyl, which is each unsubstituted or substituted by methyl; and n is 1.
4. A compound according to claim 1, wherein A is morpholinyl, 4- 15 methylpiperazinyl, thiazinyl, pyrrolidinyl, pyrazolyl,
5. The compound according to claim 4, wherein n is 0. 5
6. A compound according to claim 1, wherein A is
7. The compound according to claim 6, wherein n is 1. 10
8. A composition for the control of parasites, which contains as an active ingredient at least one compound of formula (I) according to claim 1, in addition to carriers and/or dispersants.
9. A compound of Formula I as claimed in any one of claims 1-7 substantially as 15 herein described with reference to any example thereof.
10. A composition as claimed in claim 8 substantially as herein described with reference to any example thereof.
NZ744117A 2014-08-29 2015-08-27 Novel sulfonylaminobenzamide compounds as anthelmintics NZ744117B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP14182960.6A EP2990403A1 (en) 2014-08-29 2014-08-29 Anthranilamides, sulfonamides and nitro analogues derived therefrom as anthelmintics
EP14182960.6 2014-08-29
NZ728623A NZ728623A (en) 2014-08-29 2015-08-27 Novel sulfonylaminobenzamide compounds as anthelmintics

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NZ744117A NZ744117A (en) 2021-06-25
NZ744117B2 true NZ744117B2 (en) 2021-09-28

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