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JP3479682B2 - Steroid-containing borazine compound and method for producing the same - Google Patents
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JP3479682B2 - Steroid-containing borazine compound and method for producing the same - Google Patents

Steroid-containing borazine compound and method for producing the same

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Publication number
JP3479682B2
JP3479682B2 JP2000268464A JP2000268464A JP3479682B2 JP 3479682 B2 JP3479682 B2 JP 3479682B2 JP 2000268464 A JP2000268464 A JP 2000268464A JP 2000268464 A JP2000268464 A JP 2000268464A JP 3479682 B2 JP3479682 B2 JP 3479682B2
Authority
JP
Japan
Prior art keywords
general formula
group
steroid
compound
formula
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
JP2000268464A
Other languages
Japanese (ja)
Other versions
JP2002080480A (en
Inventor
祐子 内丸
浩 山下
悌一 村上
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
National Institute of Advanced Industrial Science and Technology AIST
Original Assignee
National Institute of Advanced Industrial Science and Technology AIST
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by National Institute of Advanced Industrial Science and Technology AIST filed Critical National Institute of Advanced Industrial Science and Technology AIST
Priority to JP2000268464A priority Critical patent/JP3479682B2/en
Publication of JP2002080480A publication Critical patent/JP2002080480A/en
Application granted granted Critical
Publication of JP3479682B2 publication Critical patent/JP3479682B2/en
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  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【発明の属する技術分野】本発明は、医薬・農薬、特に
ガンの中性子捕捉療法における中性子捕捉剤等として有
用な、ステロイド骨格を有する新規なボラジン化合物及
びその製造方法に関する。
TECHNICAL FIELD The present invention relates to a novel borazine compound having a steroid skeleton, which is useful as a neutron capture agent or the like in neutron capture therapy for pharmaceuticals and agricultural chemicals, especially cancer, and a method for producing the same.

【0002】[0002]

【従来の技術】ボラジン環は、中性子捕捉能に優れた3
個のホウ素原子、及び、生体内主要元素の中では中性子
捕捉能が高い3個の窒素原子を環内に含むことから、ガ
ンの中性子捕捉療法における有望な中性子捕捉剤の1つ
であると考えられている。しかしながら、生体膜に対し
て親和性の高いステロイド骨格を有するホウ素化合物と
しては、カルボラン誘導体が報告されてはいるものの、
ボラジン環を有する誘導体については全く知られていな
い。
2. Description of the Related Art Borazine ring has excellent neutron capture ability.
It is considered to be one of the promising neutron capture agents in neutron capture therapy for cancer because it contains three boron atoms and three nitrogen atoms, which have high neutron capture ability among major elements in the body, in the ring. Has been. However, although a carborane derivative has been reported as a boron compound having a steroid skeleton having a high affinity for biological membranes,
Nothing is known about derivatives having a borazine ring.

【0003】[0003]

【発明が解決しようとする課題】したがって、本発明は
ステロイド骨格を有する新規なボラジン化合物及び該ボ
ラジン化合物を効率的に製造する方法を提供することを
目的とする。
Therefore, an object of the present invention is to provide a novel borazine compound having a steroid skeleton and a method for efficiently producing the borazine compound.

【0004】[0004]

【課題を解決するための手段】本発明者らは、鋭意研究
を重ねた結果、B,B,B−トリハロゲノボラジンが、
3位にハロゲン原子を有するステロイド化合物と、グリ
ニャール反応条件下で容易に反応し、ステロイド骨格を
有する新規なボラジン化合物を収率よく与えるという新
規な事実を見いだし、それに基づいて本発明を完成させ
るに至った。すなわち、本発明の請求項1の発明は、次
の一般式(I)
As a result of intensive studies, the present inventors have found that B, B, B-trihalogenoporazine is
The present inventors have found the novel fact that they react easily with a steroid compound having a halogen atom at the 3-position under Grignard reaction conditions to give a novel borazine compound having a steroid skeleton in good yield, and based on this, the present invention was completed. I arrived. That is, the invention of claim 1 of the present invention has the following general formula (I):

【0005】[0005]

【化6】 [Chemical 6]

【0006】{式中、Rはアルキル基又はアラルキル
基を示し、Rは次の一般式(II)
[In the formula, R 1 represents an alkyl group or an aralkyl group, and R 2 represents the following general formula (II):

【0007】[0007]

【化7】 [Chemical 7]

【0008】で表される基(式中、R及びRは水素
原子又はアルキル基から選択される同一或いは相異なる
1価の基であり、Rは分岐構造を含んでいてもよいア
ルキル基又はアルケニル基である。また、ステロイド骨
格を構成する6員環及び5員環の結合の中の1〜2個の
単結合を二重結合に置換してもよい。)を示す}で表さ
れるステロイド骨格を有するボラジン化合物に関する。
Wherein R 3 and R 4 are the same or different monovalent groups selected from a hydrogen atom or an alkyl group, and R 5 is an alkyl optionally containing a branched structure. Group or an alkenyl group, and 1 to 2 single bonds in the bonds of the 6-membered ring and the 5-membered ring constituting the steroid skeleton may be substituted with double bonds. And a borazine compound having a steroid skeleton.

【0009】また、本発明の請求項2の発明は、一般式
(III)
The invention according to claim 2 of the present invention has the general formula (III)

【0010】[0010]

【化8】 [Chemical 8]

【0011】(式中、Rはアルキル基又はアラルキル
基を示し、Xはハロゲン原子を示す。)で表されるB,
B,B−トリハロゲノボラジンを、一般式(IV)
(Wherein R 1 represents an alkyl group or an aralkyl group, and X represents a halogen atom),
B, B-trihalogenoporazine is represented by the general formula (IV)

【0012】[0012]

【化9】 [Chemical 9]

【0013】(式中、Yはハロゲン原子を示し、R
上記一般式(I)と同じである。)で表される、3位に
ハロゲン原子を有するステロイド化合物と、グリニャー
ル反応条件下で反応させることを特徴とする、一般式
(I)
(Wherein Y represents a halogen atom and R 2 has the same meaning as in the above general formula (I)) and a steroid compound having a halogen atom at the 3-position under Grignard reaction conditions. General formula (I) characterized by reacting

【0014】[0014]

【化10】 [Chemical 10]

【0015】(式中、R及びRは上記のとおりであ
る。)で表されるステロイド骨格を有するボラジン化合
物の製造方法に関する。
A method for producing a borazine compound having a steroid skeleton represented by the formula (wherein R 1 and R 2 are as described above).

【0016】[0016]

【発明の実施の形態】本発明によれば、前記一般式(II
I)で表されるB,B,B−トリハロゲノボラジンを、
前記一般式(IV)で表される3位にハロゲン原子を有す
るステロイド化合物と反応させることにより、一般式
(I)で表されるステロイド骨格を有する新規なボラジ
ン化合物が提供される。
BEST MODE FOR CARRYING OUT THE INVENTION According to the present invention, the above-mentioned general formula (II
B, B, B-trihalogenoborazine represented by I)
A novel borazine compound having a steroid skeleton represented by the general formula (I) is provided by reacting with a steroid compound represented by the general formula (IV) having a halogen atom at the 3-position.

【0017】前記一般式(III)中の窒素上の置換基R
は、アルキル基またはアラルキル基であり、より詳し
くは、炭素数が好ましくは1〜20、より好ましくは1
〜8のアルキル基、炭素数が好ましくは7〜20、より
好ましくは7〜10のアラルキル基である。それらの具
体例としては、メチル基、エチル基、プロピル基、イソ
プロピル基、ブチル基、ネオペンチル基、ヘキシル基、
オクチル基、デシル基、ベンジル基、フェネチル基等が
挙げられる。また、ホウ素上の置換基Xはハロゲン原子
であり、より詳しくは、塩素原子、臭素原子、ヨウ素原
子が好ましい。したがって、それらの置換基を有する一
般式(III)で表わされるボラジン化合物を例示すれ
ば、N,N,N−トリメチル−B,B,B−トリクロロ
ボラジン、N,N,N−トリエチル−B,B,B−トリ
クロロボラジン、N,N,N−トリイソプロピル−B,
B,B−トリクロロボラジン、N,N,N−トリブチル
−B,B,B−トリブロモボラジン、N,N,N−トリ
ネオペンチル−B,B,B−トリクロロボラジン、N,
N,N−トリベンジル−B,B,B−トリクロロボラジ
ン、N,N,N−トリフェネチル−B,B,B−トリヨ
ードボラジン等を挙げることができる。
The substituent R on the nitrogen in the above general formula (III)
1 is an alkyl group or an aralkyl group, and more specifically, it preferably has 1 to 20 carbon atoms, and more preferably 1
An alkyl group having 8 to 8 carbon atoms and an aralkyl group having 7 to 20 carbon atoms, and more preferably 7 to 10 carbon atoms. Specific examples thereof include methyl group, ethyl group, propyl group, isopropyl group, butyl group, neopentyl group, hexyl group,
Examples thereof include an octyl group, a decyl group, a benzyl group and a phenethyl group. Further, the substituent X on the boron is a halogen atom, and more specifically, a chlorine atom, a bromine atom or an iodine atom is preferable. Therefore, to give an example of a borazine compound represented by the general formula (III) having those substituents, N, N, N-trimethyl-B, B, B-trichloroborazine, N, N, N-triethyl-B, B, B-trichloroborazine, N, N, N-triisopropyl-B,
B, B-trichloroborazine, N, N, N-tributyl-B, B, B-tribromoborazine, N, N, N-trineopentyl-B, B, B-trichloroborazine, N,
Examples thereof include N, N-tribenzyl-B, B, B-trichloroborazine, N, N, N-triphenethyl-B, B, B-triiodoborazine.

【0018】一方、前記一般式(IV)中の置換基Yはハ
ロゲン原子であり、より詳しくは、塩素原子、臭素原
子、ヨウ素原子が好ましい。また、R基を表す一般式
(II)中のRおよびRは、水素原子またはアルキル
基の中から選ばれる互いに同一あるいは相異なる1価の
基であり、アルキル基に関しては、炭素数が好ましくは
1〜6、より好ましくは1〜3のアルキル基である。そ
れらの具体例としては、メチル基、エチル基、プロピル
基、イソプロピル基、ペンチル基等が挙げられる。さら
に、Rは、アルキル基またはアルケニル基で分岐構造
を含んでいてもよく、炭素数が好ましくは1〜20、よ
り好ましくは1〜12のものである。それらの具体例と
しては、メチル基、エチル基、プロピル基、ヘキシル
基、1,5−ジメチルヘキシル基、テトラデシル基、
1,5−ジメチル−4−エチル−2−ヘキセニル基、
1,4,5−トリメチル−2−ヘキセニル基等が挙げら
れる。また、ステロイド骨格を構成する6員環および5
員環の結合の中の1〜2個を、単結合から二重結合に変
えたものも含まれる。したがって、それらの置換基等を
有する一般式(IV)で表されるステロイド化合物として
は、塩化コレステリル、臭化コレステリル、3−クロロ
コレスタ−5,7−ジエン、塩化スティグマステリル、
塩化エルゴステリル、ヨウ化エルゴステリル等を挙げる
ことができる。
On the other hand, the substituent Y in the general formula (IV) is a halogen atom, and more specifically, a chlorine atom, a bromine atom or an iodine atom is preferable. Further, R 3 and R 4 in the general formula (II) representing the R 2 group are monovalent groups which are the same or different from each other and are selected from a hydrogen atom or an alkyl group, and the alkyl group has a carbon number. Is preferably 1 to 6, and more preferably 1 to 3 alkyl groups. Specific examples thereof include a methyl group, an ethyl group, a propyl group, an isopropyl group, a pentyl group and the like. Further, R 5 may be an alkyl group or an alkenyl group and may include a branched structure, and preferably has 1 to 20 carbon atoms, and more preferably 1 to 12 carbon atoms. Specific examples thereof include a methyl group, an ethyl group, a propyl group, a hexyl group, a 1,5-dimethylhexyl group, a tetradecyl group,
1,5-dimethyl-4-ethyl-2-hexenyl group,
Examples include 1,4,5-trimethyl-2-hexenyl group. In addition, 6-membered ring and 5 constituting the steroid skeleton
Also included are those in which 1 to 2 of the bond of the member ring is changed from a single bond to a double bond. Therefore, as the steroid compound represented by the general formula (IV) having those substituents and the like, cholesteryl chloride, cholesteryl bromide, 3-chlorocholesta-5,7-diene, stigmasteryl chloride,
Examples thereof include ergosteryl chloride and ergosteryl iodide.

【0019】反応に供されるステロイド化合物のB,
B,B−トリハロゲノボラジンに対するモル比は任意に
選ぶことができるが、B,B,B−トリハロゲノボラジ
ンに対する収率を考慮すれば3以上が望ましく、通常3
〜6である。
The steroid compound B used in the reaction,
The molar ratio to B, B-trihalogenovorazine can be arbitrarily selected, but in consideration of the yield to B, B, B-trihalogenovorazine, it is preferably 3 or more, and usually 3
~ 6.

【0020】B,B,B−トリハロゲノボラジンを3−
位にハロゲン原子を有するステロイド化合物と反応させ
る際のグリニャール反応の方法としては、たとえば、
(1)マグネシウム存在下で両者を反応させる方法や、
(2)3−位にハロゲン原子を有するステロイド化合物
をマグネシウムと反応させてグリニャール試薬を調製し
た後、B,B,B−トリハロゲノボラジンと反応させる
方法等、各種の方法を用いることができる。また、反応
を開始させるために、ヨウ素等の活性化剤を使用するこ
ともできる。
B, B, B-trihalogenoporazine is added to 3-
Examples of the Grignard reaction method when reacting with a steroid compound having a halogen atom at the position include:
(1) A method of reacting both in the presence of magnesium,
(2) Various methods can be used, such as a method in which a steroid compound having a halogen atom at the 3-position is reacted with magnesium to prepare a Grignard reagent and then reacted with B, B, B-trihalogenoporazine. Also, an activator such as iodine can be used to start the reaction.

【0021】本発明の反応は、−40℃以上、好ましく
は0〜150℃の反応温度で実施される。また、本発明
の方法では、グリニャール反応が可能で、原料のB,
B,B−トリハロゲノボラジンおよび3−位にハロゲン
原子を有するステロイド化合物と反応するものを除いた
各種の溶媒を用いることができる。それらの具体例とし
ては、テトラヒドロフラン、ジエチルエーテル、ジブチ
ルエーテル等を挙げることができる。
The reaction of the present invention is carried out at a reaction temperature of -40 ° C or higher, preferably 0 to 150 ° C. Further, according to the method of the present invention, Grignard reaction is possible,
Various solvents can be used except those that react with B, B-trihalogenovorazine and a steroid compound having a halogen atom at the 3-position. Specific examples thereof include tetrahydrofuran, diethyl ether, dibutyl ether and the like.

【0022】反応混合物からの目的生成物の分離精製
は、一般に、クロマトグラフィーまたは再結晶等の有機
化学的に通常用いられる手段により、容易に達せられ
る。
Separation and purification of the desired product from the reaction mixture can generally be easily achieved by means commonly used in organic chemistry such as chromatography or recrystallization.

【0023】[0023]

【実施例】次に、本発明を実施例によりさらに詳細に説
明するが、本発明はこれらの実施例に限定されるもので
はない。
EXAMPLES Next, the present invention will be described in more detail by way of examples, but the present invention is not limited to these examples.

【0024】(実施例1)B,B,B−トリクロロ−
N,N,N−トリメチルボラジン(IIIa)(4.56
mmol)、塩化コレステリル(IVa)(13.9mm
ol)、マグネシウム(34.0mmol)、および、
テトラヒドロフラン(15ml)を、窒素下、撹拌しな
がら、40℃に加熱した。少量のヨウ素を添加し、反応
液を徐々に60℃に加熱すると、溶液が白濁し白色固体
が生成した。その後、80℃で7時間加熱した後、反応
液を減圧下濃縮し、ヘキサン50mlで生成物を抽出、
ろ過した。ヘキサンろ液を濃縮し、分取ゲル浸透クロマ
トグラフィーで、生成物のB,B,B−トリコレステリ
ル−N,N,N−トリメチルボラジン(Ia)を得た
(3.2mmol、70%収率)。(Ia)のスペクト
ルデータ等は下記の通りである。 H−NMR(C):δ 0.77(s,9H,
CH),0.94(d,J=6.5Hz,18H,C
),1.05(d,J=5.9Hz,9H,C
),1.0−2.2(m,93H,CH,C
,およびCH),2.72−2.87(m,3H,
CH),3.08(s,9H、N−CH),5.47
(s,3H,CH=)ppm.13 C−NMR(C):δ 12.3(C18),
19.1(C21),20.2(C19),21.3
(C11),22.8(C26),23.1(C2
7),24.4(C23),24.5(C2),24.
7(C15),28.4(C25),28.7(C1
6),30.7(C3),32.4(C8),32.5
(C7),34.5(C4),34.9(NCH),
36.3(C20),36.7(C22),38.1
(C10),40.0(C24),40.3(C1
2),42.4(C1),42.7(C13),51.
2(C9),56.6(C14),57.2(C1
7),118.7(C6),144.5(C5)pp
m.
(Example 1) B, B, B-trichloro-
N, N, N-trimethylborazine (IIIa) (4.56
mmol), cholesteryl chloride (IVa) (13.9 mm)
ol), magnesium (34.0 mmol), and
Tetrahydrofuran (15 ml) was heated to 40 ° C. under nitrogen with stirring. When a small amount of iodine was added and the reaction solution was gradually heated to 60 ° C., the solution became cloudy and a white solid was produced. Then, after heating at 80 ° C. for 7 hours, the reaction solution was concentrated under reduced pressure, and the product was extracted with 50 ml of hexane,
Filtered. The hexane filtrate was concentrated and preparative gel permeation chromatography gave the product B, B, B-tricholesteryl-N, N, N-trimethylborazine (Ia) (3.2 mmol, 70% yield). ). The spectrum data etc. of (Ia) are as follows. 1 H-NMR (C 6 D 6 ): δ 0.77 (s, 9H,
CH 3 ), 0.94 (d, J = 6.5 Hz, 18H, C
H 3 ), 1.05 (d, J = 5.9 Hz, 9H, C
H 3), 1.0-2.2 (m, 93H, CH 3, C
H 2, and CH), 2.72-2.87 (m, 3H ,
CH), 3.08 (s, 9H , N-CH 3), 5.47
(S, 3H, CH =) ppm. 13 C-NMR (C 6 D 6 ): δ 12.3 (C18),
19.1 (C21), 20.2 (C19), 21.3
(C11), 22.8 (C26), 23.1 (C2)
7), 24.4 (C23), 24.5 (C2), 24.
7 (C15), 28.4 (C25), 28.7 (C1
6), 30.7 (C3), 32.4 (C8), 32.5
(C7), 34.5 (C4), 34.9 (NCH 3 ),
36.3 (C20), 36.7 (C22), 38.1
(C10), 40.0 (C24), 40.3 (C1
2), 42.4 (C1), 42.7 (C13), 51.
2 (C9), 56.6 (C14), 57.2 (C1
7), 118.7 (C6), 144.5 (C5) pp
m.

【0025】(実施例2)B,B,B−トリクロロ−
N,N,N−トリメチルボラジン(IIIb)(2.0m
mol)、塩化スティグマステリル(IVb)(6.2m
mol)、マグネシウム(15.3mmol)、およ
び、テトラヒドロフラン(8ml)を、窒素下、撹拌し
ながら、40℃に加熱した。少量のヨウ素を添加し、反
応液を徐々に70℃に加熱すると、溶液が白濁し白色固
体が生成した。その後、80℃で3時間加熱した後、反
応液を減圧下濃縮し、ヘキサン30mlで生成物を抽
出、ろ過した。ヘキサンろ液を濃縮し、分取ゲル浸透ク
ロマトグラフィーで、生成物のB,B,B−トリコレス
テリル−N,N,N−トリメチルボラジン(Ib)を得
た(1.2mmol、60%収率)。(Ib)のスペク
トルデータ等は下記の通りである。 H−NMR(C):δ 0.77(s,9H,
CH),0.8−2.3(m,120H,CH,C
,およびCH),2.68−2.90(m,3H,
CH),2.90−3.23(m,9H、N−C
),4.98−5.15(m,3H,側鎖CH
=),5.15−5.31(m,3H,側鎖CH=),
5.15−5.315.45(s,3H,環内CH=)
ppm.13 C−NMR(C):δ 12.4(C18),
12.6(C29),19.3(C26),20.2
(C19),21.3(C11),21.4(C2
7),21.6(C21),24.6(C2),24.
7(C15),25.9(C28),29.5(C1
6),30.6(C3),31.8(C25),32.
4(C8),32.5(C7),34.5(C4),3
4.9(NCH),38.1(C10),40.3
(C12),41.1(C20),42.3(C1),
42.5(C13),51.3(C9),51.7(C
24),56.3(C14),57.4(C17),1
18.7(C6),129.6(C23),139.0
(C22),144.5(C5)ppm.
(Example 2) B, B, B-trichloro-
N, N, N-trimethylborazine (IIIb) (2.0 m
mol), stigmasteryl chloride (IVb) (6.2 m
mol), magnesium (15.3 mmol), and tetrahydrofuran (8 ml) were heated to 40 ° C. under nitrogen with stirring. When a small amount of iodine was added and the reaction solution was gradually heated to 70 ° C., the solution became cloudy and a white solid was produced. Then, after heating at 80 ° C. for 3 hours, the reaction solution was concentrated under reduced pressure, and the product was extracted with 30 ml of hexane and filtered. The hexane filtrate was concentrated and preparative gel permeation chromatography gave the product B, B, B-tricholesteryl-N, N, N-trimethylborazine (Ib) (1.2 mmol, 60% yield). ). The spectrum data and the like of (Ib) are as follows. 1 H-NMR (C 6 D 6 ): δ 0.77 (s, 9H,
CH 3), 0.8-2.3 (m, 120H, CH 3, C
H 2, and CH), 2.68-2.90 (m, 3H ,
CH), 2.90-3.23 (m, 9H, NC)
H 3), 4.98-5.15 (m, 3H, side chain CH
=), 5.15-5.31 (m, 3H, side chain CH =),
5.15-5.315.45 (s, 3H, ring CH =)
ppm. 13 C-NMR (C 6 D 6 ): δ 12.4 (C18),
12.6 (C29), 19.3 (C26), 20.2
(C19), 21.3 (C11), 21.4 (C2
7), 21.6 (C21), 24.6 (C2), 24.
7 (C15), 25.9 (C28), 29.5 (C1
6), 30.6 (C3), 31.8 (C25), 32.
4 (C8), 32.5 (C7), 34.5 (C4), 3
4.9 (NCH 3), 38.1 ( C10), 40.3
(C12), 41.1 (C20), 42.3 (C1),
42.5 (C13), 51.3 (C9), 51.7 (C
24), 56.3 (C14), 57.4 (C17), 1
18.7 (C6), 129.6 (C23), 139.0
(C22), 144.5 (C5) ppm.

【0026】[0026]

【発明の効果】本発明の方法により、B,B,B−トリ
ハロゲノボラジンおよび3−位にハロゲン原子を有する
ステロイド化合物から、医・農薬分野等において利用価
値の高い種々のステロイド骨格を有するボラジン化合物
を、簡便に効率よく、そして安全に製造でき、その分離
精製も容易である。したがって、本発明の工業的意義は
多大である。
INDUSTRIAL APPLICABILITY By the method of the present invention, borazines having various steroid skeletons which are highly useful in the fields of medicine and agrochemicals, from B, B, B-trihalogenoborazine and steroid compounds having a halogen atom at the 3-position. The compound can be produced simply, efficiently, and safely, and its separation and purification are easy. Therefore, the industrial significance of the present invention is great.

───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7,DB名) C07J 43/00 CA(STN) REGISTRY(STN)─────────────────────────────────────────────────── ─── Continuation of front page (58) Fields surveyed (Int.Cl. 7 , DB name) C07J 43/00 CA (STN) REGISTRY (STN)

Claims (2)

(57)【特許請求の範囲】(57) [Claims] 【請求項1】 次の一般式(I) 【化1】 {式中、Rはアルキル基又はアラルキル基を示し、R
は次の一般式(II) 【化2】 で表される基(式中、R及びRは水素原子又はアル
キル基から選択される同一或いは相異なる1価の基であ
り、Rは分岐構造を含んでいてもよいアルキル基又は
アルケニル基である。また、ステロイド骨格を構成する
6員環及び5員環の結合の中の1〜2個の単結合を二重
結合に置換してもよい。)を示す}で表されるステロイ
ド骨格を有するボラジン化合物。
1. The following general formula (I): {In the formula, R 1 represents an alkyl group or an aralkyl group, and R 1
2 is the following general formula (II) (Wherein R 3 and R 4 are the same or different monovalent groups selected from a hydrogen atom or an alkyl group, and R 5 is an alkyl group or an alkenyl which may contain a branched structure) And a double bond may be substituted for 1 to 2 single bonds in the bonds of the 6-membered ring and the 5-membered ring constituting the steroid skeleton). A borazine compound having a skeleton.
【請求項2】 一般式(III) 【化3】 (式中、Rはアルキル基又はアラルキル基を示し、X
はハロゲン原子を示す。)で表されるB,B,B−トリ
ハロゲノボラジンを、一般式(IV) 【化4】 (式中、Yはハロゲン原子を示し、Rは上記一般式
(I)と同じである。)で表される、3位にハロゲン原
子を有するステロイド化合物と、グリニャール反応条件
下で反応させることを特徴とする、一般式(I) 【化5】 (式中、R及びRは上記のとおりである。)で表さ
れるステロイド骨格を有するボラジン化合物の製造方
法。
2. A compound represented by the general formula (III): (In the formula, R 1 represents an alkyl group or an aralkyl group, and X 1
Represents a halogen atom. ) Is represented by the general formula (IV): (In the formula, Y represents a halogen atom, and R 2 is the same as in the general formula (I).) A steroid compound having a halogen atom at the 3-position is reacted under Grignard reaction conditions. Of the general formula (I): (In the formula, R 1 and R 2 are as described above.) A method for producing a borazine compound having a steroid skeleton.
JP2000268464A 2000-09-05 2000-09-05 Steroid-containing borazine compound and method for producing the same Expired - Lifetime JP3479682B2 (en)

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