JP3590450B2 - Vitamin D3 derivative and method for producing the same - Google Patents
Vitamin D3 derivative and method for producing the same Download PDFInfo
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- JP3590450B2 JP3590450B2 JP14716895A JP14716895A JP3590450B2 JP 3590450 B2 JP3590450 B2 JP 3590450B2 JP 14716895 A JP14716895 A JP 14716895A JP 14716895 A JP14716895 A JP 14716895A JP 3590450 B2 JP3590450 B2 JP 3590450B2
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Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts
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- Furan Compounds (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
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- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
Description
【0001】
【産業上の利用分野】
本発明は医薬品として有用なビタミンD3 誘導体に関する。更に詳しくは、骨形成促進剤、腫瘍細胞増殖抑制剤、免疫抑制剤、高カルシウム血症剤等の医薬品として有用な1α―ヒドロキシビタミンD3 誘導体およびその製造法、ならびにその製造中間体に関する。
【0002】
【従来の技術】
ビタミンD3 代謝物が生体内のカルシウムおよびリン酸塩の物質代謝の制御物質として、極めて重要な働きをしていることは、今までに特許公報や一般文献中の多くの開示を通して十分認識されている。また最近では腫瘍性の骨髄細胞の分化誘導能を有するものも数多く見いだされているなど、さまざまな疾患に対する治療用の薬剤として臨床的用途の増加を見つつある。一方最近、α―ヒドロキシラクトン環をステロイド側鎖に有する新規なビタミンD3 活性代謝物が見いだされた[アーカイブス・オブ・バイオケミストリー・アンド・バイオフィジクス(Arch. Biochem. Biophys.,204,339〜391(1980));フェブス・レターズ(FEBS LETTERS)134,207〜211(1981)]。この化合物は1α,25―ジヒドロキシビタミンD3 ―26,23―ラクトンであり、下記に示す構造式で表わされる。
【0003】
【化11】
【0004】
この化合物には血清中のカルシウム濃度低下作用(特開昭58―118516号公報)、腫瘍細胞増殖抑制作用(特開昭58―210011号公報)、骨形成作用促進作用(特開昭60―185715号公報)などの作用があることが報告されており、さまざまな疾患の治療薬として期待されている。
【0005】
【発明が解決しようとする課題】
本発明が解決しようとする課題は、骨形成促進作用等を有する新規なビタミンD3 誘導体を見いだすことである。
【0006】
【課題を解決するための手段】
本発明者らは、上記目的で鋭意研究した結果、以下の発明に到達した。
【0007】
すなわち、本発明は下記式[1]
【0008】
【化12】
【0009】
で表わされるビタミンD3 誘導体である。上記式[1]中、R1 はメチル基、メチレン基いずれであってもよい。なお、R1 がメチレン基を表わす場合、R1 とラクトン環の3位との結合は二重結合を表わす(以下同じ)。また、R1 がメチル基のとき、ラクトン環の3位の不斉中心についての立体配置は(S)配置であり、5位の不斉中心についての立体配置は(S)、(R)配置のいずれであってもよく、さらに(S)、(R)配置の任意の割合の混合物であってもよい。またR1 がメチレン基のときラクトン環の5位の不斉中心についての立体配置は(S)、(R)配置のいずれであってもよく、さらに(S)、(R)配置の任意の割合の混合物であってもよい。その中でも5位の不斉中心が(S)配置であるものが好ましい。
【0010】
上記式[1]中、R2 およびR3 は同一または異なり、水素原子、トリ(C1 〜C7 炭化水素)シリル基、またはC2 〜C8 のアシル基を表わす。
【0011】
ここで、R2 、R3 がトリ(C1 〜C7 炭化水素)シリル基を表わす場合、その具体例として、例えばトリメチルシリル、トリエチルシリル、t―ブチルジメチルシリル基のごときトリ(C1 〜C4 アルキル)シリル基、t―ブチルジフェニルシリル基のごときジフェニル(C1 〜C4 アルキル)シリル基、トリベンジルシリル基等を好ましいものとして挙げることができる。さらに、ジメチル(2,4,6―トリ―t―ブチルフェノキシ)シリル基を用いることができる。
【0012】
また、R2 、R3 がC2 〜C8 のアシル基を表わす場合、その具体例として、例えばアセチル、プロピオニル、n―ブチリル、iso―ブチリル、n―バレリル、iso―バレリル、カプロイル、エナンチル、ベンゾイル、メトキシカルボニル、エトキシカルボニル、ベンジルオキシカルボニル基等を挙げることができる。これらのうち、C2 〜C6 アシル基、例えばn―ブチリル、iso―ブチリル、メトキシカルボニル、エトキシカルボニル基、およびベンゾイル基が好ましい。
【0013】
本発明の好ましい上記式[1]で表わされるビタミンD3 誘導体の具体例を示すと以下の通りである。
1) 1α―ヒドロキシビタミンD3 ―26,23―ラクトン
2) 23(S),25(S)―1α―ヒドロキシビタミンD3 ―26,23―ラクトン
3) 23(R),25(S)―1α―ヒドロキシビタミンD3 ―26,23―ラクトン
4) 1α―ヒドロキシ―27―ノル―25―メチレンビタミンD3 ―26,23―ラクトン
5) 23(S)―1α―ヒドロキシ―27―ノル―25―メチレンビタミンD3 ―26,23―ラクトン
6) 23(R)―1α―ヒドロキシ―27―ノル―25―メチレンビタミンD3 ―26,23―ラクトン
本発明にはまた、上記式[1]で表わされるビタミンD3 誘導体の製造法が含まれる。すなわち下記式[2]
【0014】
【化13】
【0015】
[上記式中、Xは、臭素原子またはヨウ素原子を表わし、R1 はメチル基またはメチレン基を表わす。]
で表わされるラクトン化合物と、下記式[10]
【0016】
【化14】
【0017】
[式中、R2 およびR3 は上記式[1]における定義に同じ。]
で表わされる化合物とをパラジウム触媒の存在下に反応させることを特徴とする上記式[1]で表わされるビタミンD3 誘導体の製造法である。
【0018】
このビタミンD3 誘導体は、必要に応じて脱保護反応させることにより下記式[11]
【0019】
【化15】
【0020】
[式中、R1 は上記式[1]における定義に同じ。]
で表わされるビタミンD3 誘導体とすることができる。
【0021】
本発明のビタミンD3 誘導体の製造法において、上記式[1]、[2]および[11]で表わされる化合物のラクトン環の3位、5位の立体配置は、R1 がメチル基のとき3位は(S)配置であるが、5位については(S)、(R)配置のいずれであってもよく、それらの任意の割合の混合物であってもよい。
【0022】
また、R1 がメチレン基のとき、ラクトン環の5位の立体配置は(S)、(R)配置のいずれであってもよく、それらの任意の割合の混合物であってもよい。
【0023】
例えば、ラクトン環の3位の不斉中心が(S)配置であり、5位の不斉中心が(S)配置である上記式[2]で表わされる化合物を用いた場合には、反応中これらの部位の立体配置は保存され、ラクトン環の3位の不斉中心が(S)配置であり、5位の不斉中心が(S)配置である上記式[1]で表わされるビタミンD3 誘導体が得られる。
【0024】
同様に、ラクトン環の3位の不斉中心が(S)配置であり、5位の不斉中心が(R)配置である上記式[2]で表わされる化合物を用いた場合には、ラクトン環の3位の不斉中心が(S)配置であり、5位の不斉中心が(R)配置である上記式[1]で表わされるビタミンD3 誘導体が得られる。
【0025】
上記式[1]で表わされるビタミンD3 誘導体の製造は、上記式[2]で表わされるラクトン化合物と、上記式[10]で表わされる化合物とをパラジウム触媒存在下に反応させることにより行う。ここで、パラジウム触媒とは、例えば0価または2価の有機パラジウム化合物および三置換リン化合物(モル比1:1〜1:10)である。そのような有機パラジウム化合物としては、例えばテトラキス(トリフェニルホスフィン)パラジウム、トリス(ジベンジリデンアセトン)パラジウム、トリス(ジベンジリデンアセトン)パラジウムクロロホルム、酢酸パラジウムを挙げることができる。また、三置換リン化合物としては、例えばトリフェニルホスフィン、トリブチルホスフィンを挙げることができる。これらの中でもパラジウム触媒としては、トリス(ジベンジリデンアセトン)パラジウムおよびトリフェニルホスフィン、トリス(ジベンジリデンアセトン)パラジウムクロロホルムおよびトリフェニルホスフィン(1:1〜1:10)が好ましい。
【0026】
ここで、上記式[2]で表わされるラクトン化合物と上記式[10]で表わされる化合物とは化学量論的には等モル反応を行うが、反応を確実に完結させるためにどちらか一方、普通は入手容易な方を小過剰用いることが望ましい。
【0027】
また、パラジウム触媒は上記式[2]で表わされるラクトン化合物に対して1〜100モル%、好ましくは5〜30モル%の範囲で使用される。
【0028】
さらに、三置換リン化合物は、活性なパラジウムを生成するために、有機パラジウム触媒に対して1〜10当量用いられる。
【0029】
本製造法において用いられる有機溶媒としては、ヘキサン、トルエン等の炭化水素系溶媒、テトラヒドロフラン、ジオキサン等のエーテル系溶媒、N,N―ジメチルホルムアミド、アセトニトリル等の水溶性溶媒、またはこれらの混合溶媒等が挙げられ、いずれも十分に脱気した後に使用することが重要である。
【0030】
反応温度は、一般に室温から溶媒の沸点の範囲が使用される。反応時間は用いる反応溶媒および反応温度により異なり、通常、薄層クロマトグラフィー等の分析手段を用いて上記式[2]で表わされるラクトン化合物、あるいは上記式[10]で表わされる化合物のいずれかが消滅するまで行うことが望ましい。
【0031】
また、パラジウム触媒に加えて、ハロゲン化水素を補足するために、例えばトリエチルアミン、ジイソプロピルエチルアミン等の塩基の存在下に反応させることが好ましい。
【0032】
かかる塩基の量として上記式[2]で表わされるラクトン化合物に対して1当量以上が好ましく、必要により溶媒と兼用することもできる。
【0033】
また、本発明の上記式[1]で表わされるビタミンD3 誘導体は、必要により脱保護することにより、上記式[11]で表わされるビタミンD3 誘導体とすることができる。
【0034】
かかる脱保護反応は、公知の方法(例えばCalvely, M.J., Tetrahedoron,20,4609〜4619,1987)に準じて行うことができ、その場合の脱保護剤としては、例えばテトラブチルアンモニウムフロリド、ピリジニウムp―トルエンスルホネート等が挙げられる。
【0035】
本発明方法において原料として用いられる上記式[2]で表わされる化合物は、例えば下記のスキームに従って合成することができる。Xがヨウ素原子である場合、立体配置が異る場合も同様である。
【0036】
【化16】
【0037】
【化17】
【0038】
【化18】
【0039】
【化19】
【0040】
すなわち、上記式[2]で表わされるラクトン化合物は、下記式[3]
【0041】
【化20】
【0042】
[式中、R1 は上記式[1]における定義に同じ。]
で表わされるラクトン化合物をハロメチレン化することにより得られる。例えば、下記式[8]
【0043】
【化21】
【0044】
で表わされる化合物からは、下記式[9]
【0045】
【化22】
【0046】
[式中、Xは臭素原子またはヨウ素原子を表わす。]
で表わされる化合物が得られる。
【0047】
また、かかる上記式[3]で表わされる化合物は、下記式[5]
【0048】
【化23】
【0049】
[式中、R1 は上記式[1]における定義に同じ。R4 は水素原子、トリ(C1〜C7 炭化水素)シリル基、またはC2〜C8 のアシル基を表わす。]
で表わされるラクトン化合物を、必要により脱保護した後、酸化することにより得られる。さらに、かかる上記式[5]で表わされるラクトン化合物は、下記式[6]
【0050】
【化24】
【0051】
[式中、R4 は[5]における定義に同じ。]
で表わされるヘプタン酸誘導体から合成することができる。一方、上記式[2]で表わされるラクトン化合物は、下記式[4]
【0052】
【化25】
【0053】
[式中、Xは臭素原子またはヨウ素原子を表わす。]
で表わされるヘプタン酸誘導体から導くこともできる。
【0054】
さらに、かかる上記式[4]で表わされるヘプタン酸誘導体は下記式[7]
【0055】
【化26】
【0056】
[式中、Xは臭素原子またはヨウ素原子を表わし、Yはp−トルエンスルホニルオキシ基、シアノ基、またはホルミル基を表わす。]
で表わされる化合物から合成することができる。これらの反応は実施例においてさらに具体的に示される。
【0057】
本発明には、かかる上記式[1]で表わされるビタミンD3 誘導体の合成中間体たる上記式[2]、[3]、[4]、[5]、[6]、および[7]で表わされる化合物も含まれる。
【0058】
ここで上記式[3]および[5]で表わされるラクトン化合物のR1 がメチル基のとき、ラクトン環の3位の不斉中心は(S)配置であるが、5位の不斉中心は(R)配置、(S)配置いずれであってもよく、両者の任意の割合の混合物であってもよい。
【0059】
また、上記式[4]または[6]で表わされるヘプタン酸誘導体において、4位の不斉中心は(R)配置、(S)配置いずれであってもよく、両者の任意の割合の混合物であってもよい。
【0060】
本発明の、好ましい上記式[2]で表わされる化合物の具体例を示すと次の通りである。
1) (5S)―5―{(2R)―2―[(1R,7aR)―オクタヒドロ―4―ブロモメチレン―7a―メチル―1H―インデン―1―イル]プロピル}―3―メチレンジヒドロ―2(3H)―フラノン
2) (5R)―5―{(2R)―2―[(1R,7aR)―オクタヒドロ―4―ブロモメチレン―7a―メチル―1H―インデン―1―イル]プロピル}―3―メチレンジヒドロ―2(3H)―フラノン
3) (3S,5S)―5―{(2R)―2―[(1R,7aR)―オクタヒドロ―4―ブロモメチレン―7a―メチル―1H―インデン―1―イル]プロピル}―3―メチルジヒドロ―2(3H)―フラノン
4) (3S,5R)―5―{(2R)―2―[(1R,7aR)―オクタヒドロ―4―ブロモメチレン―7a―メチル―1H―インデン―1―イル]プロピル}―3―メチルジヒドロ―2(3H)―フラノン
5) (5S)―5―{(2R)―2―[(1R,7aR)―オクタヒドロ―4―ヨードメチレン―7a―メチル―1H―インデン―1―イル]プロピル}―3―メチレンジヒドロ―2(3H)―フラノン
6) (5R)―5―{(2R)―2―[(1R,7aR)―オクタヒドロ―4―ヨードメチレン―7a―メチル―1H―インデン―1―イル]プロピル}―3―メチレンジヒドロ―2(3H)―フラノン
7) (3S,5S)―5―{(2R)―2―[(1R,7aR)―オクタヒドロ―4―ヨードメチレン―7a―メチル―1H―インデン―1―イル]プロピル}―3―メチルジヒドロ―2(3H)―フラノン
8) (3S,5R)―5―{(2R)―2―[(1R,7aR)―オクタヒドロ―4―ヨードメチレン―7a―メチル―1H―インデン―1―イル]プロピル}―3―メチルジヒドロ―2(3H)―フラノン
【0061】
本発明の、好ましい上記式[3]で表わされる化合物の具体例を示すと次の通りである。
1) (5S)―5―{(2R)―2―[(1R,7aR)―オクタヒドロ―4―オキソ―7a―メチル―1H―インデン―1―イル]プロピル}―3―メチレンジヒドロ―2(3H)―フラノン
2) (5R)―5―{(2R)―2―[(1R,7aR)―オクタヒドロ―4―オキソ―7a―メチル―1H―インデン―1―イル]プロピル}―3―メチレンジヒドロ―2(3H)―フラノン
3) (3S,5S)―5―{(2R)―2―[(1R,7aR)―オクタヒドロ―4―オキソ―7a―メチル―1H―インデン―1―イル]プロピル}―3―メチルジヒドロ―2(3H)―フラノン
4) (3S,5R)―5―{(2R)―2―[(1R,7aR)―オクタヒドロ―4―オキソ―7a―メチル―1H―インデン―1―イル]プロピル}―3―メチルジヒドロ―2(3H)―フラノン
【0062】
本発明の、好ましい上記式[4]で表わされる化合物の具体例を示すと次の通りである。
1) (4S,6R)―6―[(1R,7aR)―オクタヒドロ―4―ブロモメチレン―7a―メチル―1H―インデン―1―イル]―2―メトキシカルボニル―4―ヒドロキシ―1―ヘプテン
2) (4R,6R)―6―[(1R,7aR)―オクタヒドロ―4―ブロモメチレン―7a―メチル―1H―インデン―1―イル]―2―メトキシカルボニル―4―ヒドロキシ―1―ヘプテン
3) (4S,6R)―6―[(1R,7aR)―オクタヒドロ―4―ヨードメチレン―7a―メチル―1H―インデン―1―イル]―2―メトキシカルボニル―4―ヒドロキシ―1―ヘプテン
4) (4R,6R)―6―[(1R,7aR)―オクタヒドロ―4―ヨードメチレン―7a―メチル―1H―インデン―1―イル]―2―メトキシカルボニル―4―ヒドロキシ―1―ヘプテン
【0063】
本発明の、好ましい上記式[5]で表わされる化合物の具体例を示すと次の通りである。
1) (5S)―5―{(2R)―2―[(1R,7aR)―オクタヒドロ―4―ヒドロキシ―7a―メチル―1H―インデン―1―イル]プロピル}―3―メチレンジヒドロ―2(3H)―フラノン
2) (5R)―5―{(2R)―2―[(1R,7aR)―オクタヒドロ―4―ヒドロキシ―7a―メチル―1H―インデン―1―イル]プロピル}―3―メチレンジヒドロ―2(3H)―フラノン
3) (3S,5S)―5―{(2R)―2―[(1R,7aR)―オクタヒドロ―4―ヒドロキシ―7a―メチル―1H―インデン―1―イル]プロピル}―3―メチルジヒドロ―2(3H)―フラノン
4) (3S,5R)―5―{(2R)―2―[(1R,7aR)―オクタヒドロ―4―ヒドロキシ―7a―メチル―1H―インデン―1―イル]プロピル}―3―メチルジヒドロ―2(3H)―フラノン
5) (5S)―5―{(2R)―2―[(1R,7aR)―オクタヒドロ―4―トリメチルシリルオキシ―7a―メチル―1H―インデン―1―イル]プロピル}―3―メチレンジヒドロ―2(3H)―フラノン
6) (5R)―5―{(2R)―2―[(1R,7aR)―オクタヒドロ―4―トリメチルシリルオキシ―7a―メチル―1H―インデン―1―イル]プロピル}―3―メチレンジヒドロ―2(3H)―フラノン
7) (3S,5S)―5―{(2R)―2―[(1R,7aR)―オクタヒドロ―4―トリメチルシリルオキシ―7a―メチル―1H―インデン―1―イル]プロピル}―3―メチルジヒドロ―2(3H)―フラノン
8) (3S,5R)―5―{(2R)―2―[(1R,7aR)―オクタヒドロ―4―トリメチルシリルオキシ―7a―メチル―1H―インデン―1―イル]プロピル}―3―メチルジヒドロ―2(3H)―フラノン
9) (5S)―5―{(2R)―2―[(1R,7aR)―オクタヒドロ―4―t―ブチルジメチルシリルオキシ―7a―メチル―1H―インデン―1―イル]プロピル}―3―メチレンジヒドロ―2(3H)―フラノン
10) (5R)―5―{(2R)―2―[(1R,7aR)―オクタヒドロ―4―t―ブチルジメチルシリルオキシ―7a―メチル―1H―インデン―1―イル]プロピル}―3―メチレンジヒドロ―2(3H)―フラノン
11) (3S,5S)―5―{(2R)―2―[(1R,7aR)―オクタヒドロ―4―t―ブチルジメチルシリルオキシ―7a―メチル―1H―インデン―1―イル]プロピル}―3―メチルジヒドロ―2(3H)―フラノン
12) (3S,5R)―5―{(2R)―2―[(1R,7aR)―オクタヒドロ―4―t―ブチルジメチルシリルオキシ―7a―メチル―1H―インデン―1―イル]プロピル}―3―メチルジヒドロ―2(3H)―フラノン
【0064】
本発明の、好ましい上記式[6]で表わされる化合物の具体例を示すと次の通りである。
1) (4S,6R)―6―[(1R,7aR)―オクタヒドロ―4―ヒドロキシ―7a―メチル―1H―インデン―1―イル]―2―メトキシカルボニル―4―ヒドロキシ―1―ヘプテン
2) (4R,6R)―6―[(1R,7aR)―オクタヒドロ―4―ヒドロキシ―7a―メチル―1H―インデン―1―イル]―2―メトキシカルボニル―4―ヒドロキシ―1―ヘプテン
3) (4S,6R)―6―[(1R,7aR)―オクタヒドロ―4―トリメチルシリルオキシ―7a―メチル―1H―インデン―1―イル]―2―メトキシカルボニル―4―ヒドロキシ―1―ヘプテン
4) (4R,6R)―6―[(1R,7aR)―オクタヒドロ―4―トリメチルシリルオキシ―7a―メチル―1H―インデン―1―イル]―2―メトキシカルボニル―4―ヒドロキシ―1―ヘプテン
5) (4S,6R)―6―[(1R,7aR)―オクタヒドロ―4―t―ブチルジメチルシリルオキシ―7a―メチル―1H―インデン―1―イル]―2―メトキシカルボニル―4―ヒドロキシ―1―ヘプテン
6) (4R,6R)―6―[(1R,7aR)―オクタヒドロ―4―t―ブチルジメチルシリルオキシ―7a―メチル―1H―インデン―1―イル]―2―メトキシカルボニル―4―ヒドロキシ―1―ヘプテン
【0065】
本発明の、好ましい上記式[7]で表わされる化合物の具体例を示すと次の通りである。
1) (2R)―2―[(1R,7aR)―オクタヒドロ―4―ブロモメチレン―7a―メチル―1H―インデン―1―イル]プロピルパラトルエンスルホネート
2) (3R)―3―[(1R,7aR)―オクタヒドロ―4―ブロモメチレン―7a―メチル―1H―インデン―1―イル]ブチロニトリル
3) (3R)―3―[(1R,7aR)―オクタヒドロ―4―ブロモメチレン―7a―メチル―1H―インデン―1―イル]ブタナール
4) (2R)―2―[(1R,7aR)―オクタヒドロ―4―ヨードメチレン―7a―メチル―1H―インデン―1―イル]プロピルパラトルエンスルホネート
5) (3R)―3―[(1R,7aR)―オクタヒドロ―4―ヨードメチレン―7a―メチル―1H―インデン―1―イル]ブチロニトリル
6) (3R)―3―[(1R,7aR)―オクタヒドロ―4―ヨードメチレン―7a―メチル―1H―インデン―1―イル]ブタナール
【0066】
【実施例】
以下、本発明を実施例によりさらに詳細に説明するが、本発明はこれによって限定されるものではない。
【0067】
[実施例1]
(4S,6R)―6―[(1R,7aR)―オクタヒドロ―4―ヒドロキシ―7a―メチル―1H―インデン―1―イル]―2―メトキシカルボニル―4―ヒドロキシ―1―ヘプテン、および(4R,6R)―6―[(1R,7aR)―オクタヒドロ―4―ヒドロキシ―7a―メチル―1H―インデン―1―イル]―2―メトキシカルボニル―4―ヒドロキシ―1―ヘプテンの製造
【0068】
【化27】
【0069】
500mlナスフラスコに(3R)―3―[(1R,7aR)―オクタヒドロ―4―ヒドロキシ―7a―メチル―1H―インデン―1―イル]ブタナール3.0gを入れ、THF100ml加えて攪拌し、氷冷却バスで冷却した。ここにメチル―2―ブロモメチルアクリレート3.2mlを滴下した。次に亜鉛粉末1.37gと飽和塩化アンモニウム水390mlを加えて同温度で45分間攪拌した。
【0070】
反応液に酢酸エチル150mlを加えて抽出した。有機層を飽和食塩水で2回洗浄した後、無水硫酸マグネシウム上にて乾燥した。乾燥剤を濾別し、溶媒を減圧下留去し、粗体5.0gを得た。これをシリカゲルカラム(メルクゲル、250g、ヘキサン/酢酸エチル=9/1〜3/1)で精製を行い、(4S,6R)―6―[(1R,7aR)―オクタヒドロ―4―ヒドロキシ―7a―メチル―1H―インデン―1―イル]―2―メトキシカルボニル―4―ヒドロキシ―1―ヘプテン(more polar)を2.03gと、(4R,6R)―6―[(1R,7aR)―オクタヒドロ―4―ヒドロキシ―7a―メチル―1H―インデン―1―イル]―2―メトキシカルボニル―4―ヒドロキシ―1―ヘプテン(less polar)を1.52g(収率81%)得た。
【0071】
1H―NMR(CDCl3 ,δppm)
6.25(d,1H,J=2Hz),5.66(d,1H,J=2Hz),
4.07(br,1H),3.82〜3.88(br,1H),
3.77(s,3H),
2.51(dd,1H,J1=1Hz,J2=9Hz),
2.36(dd,1H,J1=8Hz,J2=14Hz),
0.96(s,1H),0.94(d,3H,J=6Hz),
6.27(d,1H,J=1Hz),5.69(d,1H,J=1Hz),
4.07(br,1H),3.80〜3.86(br,1H),
3.77(s,3H),
2.69(dd,1H,J1=1Hz,J2=10Hz),
2.18(dd,1H,J1=9Hz,J2=14Hz),
0.98(d,3H,J=7Hz),0.95(s,3H)
【0072】
[実施例2]
(5S)―5―{(2R)―2―[(1R,7aR)―オクタヒドロ―4―ヒドロキシ―7a―メチル―1H―インデン―1―イル]プロピル}―3―メチレンジヒドロ―2(3H)―フラノンの製造
【0073】
【化28】
【0074】
100mlナスフラスコに(4S,6R)―6―[(1R,7aR)―オクタヒドロ―4―ヒドロキシ―7a―メチル―1H―インデン―1―イル]―2―メトキシカルボニル―4―ヒドロキシ―1―ヘプテンを1.00gとり、THF15mlを加えて溶解した。さらに、水15mlを加えて攪拌し、氷冷却バスで冷却した。ここに4Nの水酸化リチウム水溶液を6ml加え、同温度で1時間攪拌した。次に同温度下に濃塩酸を滴下してpH=2に調整し、室温下に3時間攪拌した。反応液に水50ml、酢酸エチル200mlを加えて抽出した。有機層を、さらに水で3回、飽和食塩水で2回洗浄した後、無水硫酸マグネシウム上にて乾燥した。乾燥剤を濾別し、溶媒を減圧下留去し(5S)―5―{(2R)―2―[(1R,7aR)―オクタヒドロ―4―ヒドロキシ―7a―メチル―1H―インデン―1―イル]プロピル}―3―メチレンジヒドロ―2(3H)―フラノンを880mg得た。
【0075】
1H―NMR(CDCl3 ,δppm)
6.22(t,1H,J=3Hz),5.62(t,1H,J=2Hz),
4.58(dd,1H,J1=7Hz,J2=14Hz),
4.08(d,1H,J=3Hz),3.01〜3.10(m,1H),
2.56〜2.6(m,1H),1.00(d,3H,J=7Hz),
0.95(s,3H)
【0076】
[実施例3]
(5R)―5―{(2R)―2―[(1R,7aR)―オクタヒドロ―4―ヒドロキシ―7a―メチル―1H―インデン―1―イル]プロピル}―3―メチレンジヒドロ―2(3H)―フラノンの製造
【0077】
【化29】
【0078】
100mlナスフラスコに(4R,6R)―6―[(1R,7aR)―オクタヒドロ―4―ヒドロキシ―7a―メチル―1H―インデン―1―イル]―2―メトキシカルボニル―4―ヒドロキシ―1―ヘプテンを570mgとり、THF5mlを加えて溶解した。さらに水5mlを加えて攪拌し、氷冷却バスで冷却した。ここに4Nの水酸化リチウム水溶液を3ml加え、同温度で1時間攪拌した。次に同温度下に濃塩酸を滴下してpH=2に調整し、室温下に3時間攪拌した。反応液に水50ml、酢酸エチル200mlを加えて抽出した。有機層を、さらに水で3回、飽和食塩水で2回洗浄した後、無水硫酸マグネシウム上にて乾燥した。乾燥剤を濾別し、溶媒を減圧下留去し(5R)―5―{(2R)―2―[(1R,7aR)―オクタヒドロ―4―ヒドロキシ―7a―メチル―1H―インデン―1―イル]プロピル}―3―メチレンジヒドロ―2(3H)―フラノンを451mg得た。
【0079】
[実施例4]
(5S)―5―{(2R)―2―[(1R,7R)―オクタヒドロ―4―オキソ―7a―メチル―1H―インデン―1―イル]プロピル}―3―メチレンジヒドロ―2(3H)―フラノンの製造
【0080】
【化30】
【0081】
200mlナスフラスコに重クロム酸ピリジニウム2.38gをとり、DMF50ml加えて、氷冷却バスで冷却した。ここに(5S)―5―{(2R)―2―[(1R,7R)―オクタヒドロ―4―ヒドロキシ―7a―メチル―1H―インデン―1―イル]プロピル}―3―メチレンジヒドロ―2(3H)―フラノン880mgをDMF20mlに溶解した溶液を滴下し、室温で3時間攪拌した。反応液にエーテル200ml加えて不溶物を濾別し、水、次いで飽和食塩水で洗浄した後、無水硫酸マグネシウム上にて乾燥した。乾燥剤を濾別し、溶媒を減圧下留去し、粗体1.02gを得た。これをシリカゲルカラム(ダイソーゲルIR―60、150g、ヘキサン/酢酸エチル=3/1〜2/1)で精製を行い、(5S)―{(2R)―2―[(1R,7aR)―オクタヒドロ―4―オキソ―7a―メチル―1H―インデン―1―イル]プロピル}―3―メチレンジヒドロ―2(3H)―フラノンを700mg(収率69%)得た。
【0082】
1H―NMR(CDCl3 ,δppm)
6.23(t,1H,J=3Hz),5.63(t,1H,J=2Hz),
4.6〜4.7(m,1H),3.0〜3.13(m,1H),
2.4〜2.6(m,1H),1.05(d,3H,J=7Hz),
0.67(s,3H)
【0083】
[実施例5]
(5R)―5―{(2R)―2―[(1R,7aR)―オクタヒドロ―4―オキソ―7a―メチル―1H―インデン―1―イル]プロピル}―3―メチレンジヒドロ―2(3H)―フラノンの製造
【0084】
【化31】
【0085】
200mlナスフラスコに重クロム酸ピリジニウム648mgをとり、DMF10mlを加えて、氷冷却バスで冷却した。ここに(5R)―5―{(2R)―2―[(1R,7aR)―オクタヒドロ―4―ヒドロキシ―7a―メチル―1H―インデン―1―イル]プロピル}―3―メチレンジヒドロ―2(3H)―フラノン240mgをDMF10mlに溶解した溶液を滴下し、室温で3時間攪拌した。反応液にエーテル100mlを加えて不溶物を濾別し、水、次いで飽和食塩水で洗浄した後、無水硫酸マグネシウム上にて乾燥した。乾燥剤を濾別し、溶媒を減圧下留去し、粗体600mgを得た。これをシリカゲルカラム(ダイソーゲルIR―60、100g、ヘキサン/酢酸エチル=3/1〜2/1)で精製を行い、(5R)―{(2R)―2―[(1R,7aR)―オクタヒドロ―4―オキソ―7a―メチル―1H―インデン―1―イル]プロピル}―3―メチレンジヒドロ―2(3H)―フラノンを327mg得た。
【0086】
1H―NMR(CDCl3 ,δppm)
6.23(t,1H,J=3Hz),5.63(t,1H,J=2Hz),
4.59(t,1H,J=7Hz),3.0〜3.10(m,1H),
2.4〜2.6(m,1H),1.07(d,3H,J=6Hz),
0.66(s,3H)
【0087】
[実施例6]
(3S,5S)―5―{(2R)―2―[(1R,7aR)―オクタヒドロ―4―オキソ―7a―メチル―1H―インデン―1―イル]プロピル}―3―メチルジヒドロ―2(3H)―フラノンの製造
【0088】
【化32】
【0089】
100mlナスフラスコに(5S)―5―{(2R)―2―[(1R,7aR)―オクタヒドロ―4―オキソ―7a―メチル―1H―インデン―1―イル]プロピル}―3―メチレンジヒドロ―2(3H)―フラノンを200mgとり、エタノール50mlを加えて攪拌溶解した。窒素雰囲気下に10%Pd/カーボン50mgを投入し、水素雰囲気(風船)に置換して室温で3時間攪拌した。窒素置換後に触媒を濾別して溶媒を減圧下留去し、(3S,5S)―5―{(2R)―2―[(1R,7aR)―オクタヒドロ―4―オキソ―7a―メチル―1H―インデン―1―イル]プロピル}―3―メチルジヒドロ―2(3H)―フラノン185mgを得た。
【0090】
1H―NMR(CDCl3 ,δppm)
4.40〜4.51(m,1H),2.62〜2.72(m,1H),
2.41〜2.51(m,2H),2.27(d,3H,J=7Hz),
1.03(d,3H,J=7Hz),0.66(s,3H)
【0091】
[実施例7]
(3S,5S)―5―{(2R)―2―[(1R,7aR)―オクタヒドロ―4―ブロモメチレン―7a―メチル―1H―インデン―1―イル]プロピル}―3―メチルジヒドロ―2(3H)―フラノンの製造
【0092】
【化33】
【0093】
100mlナスフラスコにブロモメチレントリフェニルホスホニウムブロミド1.79gをとり、乾燥したTHF20mlを加えて攪拌し、−70℃冷却バスで冷却した。ここに1Mの[(CH3 )3 Si]2 NNa/THF溶液3.9mlを滴下して、同温度で1時間攪拌した。次に(3S,5S)―5―{(2R)―2―[(1R,7aR)―オクタヒドロ―4―オキソ―7a―メチル―1H―インデン―1―イル]プロピル}―3―メチルジヒドロ―2(3H)―フラノン120mgを乾燥したTHF5mlに溶かした溶液を滴下した。冷却バスをはずして2時間攪拌した。次にヘキサンを加えて不溶物を濾別し、溶媒を減圧下留去し、粗体1.2gを得た。これをシリカゲルカラム(ダイソーゲルIR―60、80g、ヘキサン/酢酸エチル=15/1)で精製を行い、(3S,5S)―5―{(2R)―2―[(1R,7aR)―オクタヒドロ―4―ブロモメチレン―7a―メチル―1H―インデン―1―イル]プロピル}―3―メチルジヒドロ―2(3H)―フラノンを69mg(収率46%)得た。
【0094】
1H―NMR(CDCl3 ,δppm)
5.65(d,1H,J=2Hz),4.40〜4.50(m,1H),
2.85〜2.90(m,1H),2.62〜2.72(m,1H),
2.41〜2.50(m,1H),2.67(d,3H,J=7Hz),
1.00(d,3H,J=7Hz),0.58(s,3H)
【0095】
[実施例8]
(2R)―2―[(1R,7aR)―オクタヒドロ―4―ブロモメチレン―7a―メチル―1H―インデン―1―イル]プロピルパラトルエンスルホネートの製造
【0096】
【化34】
【0097】
100mlナスフラスコにブロモメチレントリフェニルホスホニウムブロミド2.39gをとり、乾燥したTHF40mlを加えて攪拌し、−70℃冷却バスで冷却した。ここに1Mの[(CH3 )3 Si]2 NNa/THF溶液5.28mlを滴下して、同温度で1時間攪拌した。次に(2R)―2―[(1R,7aR)―オクタヒドロ―4―オキソ―7a―メチル―1H―インデン―1―イル]プロピルパラトルエンスルホネート300mgを乾燥したTHF10mlに溶かした溶液を滴下した。冷却バスをはずして1時間攪拌した。次にヘキサンを加えて不溶物を濾別し、溶媒を減圧下留去して、粗体2.5gを得た。これをシリカゲルカラム(メルクゲル、100g、ヘキサン/酢酸エチル=14/1、9/1)で精製を行い、{(2R)―2―[(1R,7aR)―オクタヒドロ―4―ブロモメチレン―7a―メチル―1H―インデン―1―イル]プロピルパラトルエンスルホネートを178mg(収率48%)得た。
【0098】
1H―NMR(CDCl3 ,δppm)
7.78(d,2H,J=8Hz),7.35(d,2H,J=8Hz),
5.64(s,1H),
3.96(dd,1H,J1=3Hz,J2=9Hz),
3.82(dd,1H,J1=6Hz,J2=9Hz),
2.45(s,3Hz),0.99(d,3H,J=7Hz),
0.53(s,3H)
【0099】
[実施例9]
(3R)―3―[(1R,7aR)―オクタヒドロ―4―ブロモメチレン―7a―メチル―1H―インデン―1―イル]ブチロニトリルの製造
【0100】
【化35】
【0101】
50mlナスフラスコに(2R)―2―[(1R,7aR)―オクタヒドロ―4―ブロモメチレン―7a―メチル―1H―インデン―1―イル]プロピルパラトルエンスルホネートを178mgとり、DMF6ml加えて溶解した。ここにKCN215mgを投入し、50℃バスで24時間攪拌した。反応液に水50mlを加え、エーテルで抽出した。有機層を水、飽和食塩水で洗浄した後、無水硫酸マグネシウム上で乾燥し、乾燥剤を濾別した。溶媒を減圧下留去して、粗体110mgを得た。これをシリカゲルカラム(ダイソーゲル、ヘキサン/酢酸エチル=14/1)で精製を行い、(3R)―3―[(1R,7aR)―オクタヒドロ―4―ブロモメチレン―7a―メチル―1H―インデン―1―イル]ブチロニトリルを84mg(収率69%)得た。
【0102】
1H―NMR(CDCl3 ,δppm)
5.67(s,1H),2.86〜2.91(m,1H),
2.21〜2.35(m,2H),1.18(d,3H,J=6Hz),
0.59(s,3H)
【0103】
[実施例10]
(3R)―3―[(1R,7aR)―オクタヒドロ―4―ブロモメチレン―7a―メチル―1H―インデン―1―イル]ブタナールの製造
【0104】
【化36】
【0105】
25mlナスフラスコに(3R)―3―[(1R,7aR)―オクタヒドロ―4―ブロモメチレン―7a―メチル―1H―インデン―1―イル]ブチロニトリルを84mgとり、乾燥したジクロロメタン5ml加えて溶解した。−70℃バスで冷却し1.5Mの[(CH3 )2 CHCH2 ]2 AlH/トルエン溶液660μlを滴下した。同温度で1時間攪拌し、飽和硫酸ナトリウム水0.5ml、メタノール0.3ml、2Nの塩酸0.5ml、酢酸エチル15mlを加えて30分間攪拌した。反応液をセライト濾過し、飽和塩化アンモニウム水、次いで飽和食塩水で洗浄した後、無水硫酸マグネシウム上で乾燥し、乾燥剤を濾別した。溶媒を減圧留去して、(3R)―3―[(1R,7aR)―オクタヒドロ―4―ブロモメチレン―7a―メチル―1H―インデン―1―イル]ブタナールを85mg得た。
【0106】
[実施例11]
(4S,6R)―6―[(1R,7aR)―オクタヒドロ―4―ブロモメチレン―7a―メチル―1H―インデン―1―イル]―2―メトキシカルボニル―4―ヒドロキシ―1―ヘプテン、および(4R,6R)―6―[(1R,7aR)―オクタヒドロ―4―ブロモメチレン―7a―メチル―1H―インデン―1―イル]―2―メトキシカルボニル―4―ヒドロキシ―1―ヘプテンの製造
【0107】
【化37】
【0108】
50mlナスフラスコに(3R)―3―[(1R,7aR)―オクタヒドロ―4―ブロモメチレン―7a―メチル―1H―インデン―1―イル]ブタナールを105mgとり、乾燥したTHF8mlを加えて溶解した。氷冷却バスで冷却し、メチル―2―ブロモメチルアクリレート84μlを滴下した。さらに亜鉛粉末35mgと飽和塩化アンモニウム水10mlを加え、同温度で1時間攪拌した。反応液を酢酸エチルで抽出し、有機層を飽和食塩水で洗浄した後、無水硫酸マグネシウム上で乾燥した。乾燥剤を濾別後、溶媒を減圧下留去して粗体166mgを得た。これをシリカゲルカラム(メルクゲル、ヘキサン/酢酸エチル=9/1)で精製を行い、(4S,6R)―6―[(1R,7aR)―オクタヒドロ―4―ブロモメチレン―7a―メチル―1H―インデン―1―イル]―2―メトキシカルボニル―4―ヒドロキシ―1―ヘプテン43mgと(4R,6R)―6―[(1R,7aR)―オクタヒドロ―4―ブロモメチレン―7a―メチル―1H―インデン―1―イル]―2―メトキシカルボニル―4―ヒドロキシ―1―ヘプテン55mgを得た。
【0109】
1H―NMR(CDCl3 ,δppm)
6.269(d,1H,J=1Hz),5.66(d,2H,J=10Hz),
3.77(s,3H),2.84〜2.93(m,1H),
2.65〜2.72(m,1H),2.13〜2.27(m,1H),
1.02(d,3H,J=7Hz),0.58(s,3H),
6.249(d,1H,J=1Hz),5.65(d,2H,J=5Hz),
3.77(s,3H),2.84〜2.90(m,1H),
2.53〜2.55(m,1H),2.31〜2.39(m,1H),
0.97(d,3H,J=7Hz),0.59(s,3H)
【0110】
[実施例12]
(5S)―5―{(2R)―2―[(1R,7aR)―オクタヒドロ―4―ブロモメチレン―7a―メチル―1H―インデン―1―イル]プロピル}―3―メチレンジヒドロ―2(3H)―フラノンの製造
【0111】
【化38】
【0112】
50mlナスフラスコに(4S,6R)―6―[(1R,7aR)―オクタヒドロ―4―ブロモメチレン―7a―メチル―1H―インデン―1―イル]―2―メトキシカルボニル―4―ヒドロキシ―1―ヘプテンを55mgとり、THF6mlを加えて溶解した。さらに水6mlを加え、氷冷却バスで冷却し、4Nの水酸化リチウムを0.25ml滴下し、同温度で1時間攪拌した。次に同温度下に濃塩酸を滴下してpH=2に調整し、室温下に3時間攪拌した。反応液に水10ml、酢酸エチル100mlを加えて抽出した。有機層を水で3回、飽和食塩水で2回洗浄した後、無水硫酸マグネシウム上にて乾燥した。乾燥剤を濾別し、溶媒を減圧下留去し(5S)―5―{(2R)―2―[(1R,7aR)―オクタヒドロ―4―ブロモメチレン―7a―メチル―1H―インデン―1―イル]プロピル}―3―メチレンジヒドロ―2(3H)―フラノンを51mg得た。
【0113】
1H―NMR(CDCl3 ,δppm)
6.23(t,1H,J=3Hz),5.62(t,1H,J=2Hz),
5.65(d,1H,J=2Hz),
4.12(dd,1H,J1=7Hz,J2=14Hz),
3.00〜3.11(m,1H),2.85〜2.9(m,1H),
2.47〜2.57(m,1H),1.03(d,3H,J=7Hz),
0.58(s,3H)
【0114】
[実施例13]
(5R)―5―{(2R)―2―[(1R,7aR)―オクタヒドロ―4―ブロモメチレン―7a―メチル―1H―インデン―1―イル]プロピル}―3―メチレンジヒドロ―2(3H)―フラノンの製造
【0115】
【化39】
【0116】
50mlナスフラスコに(4R,6R)―6―[(1R,7aR)―オクタヒドロ―4―ブロモメチレン―7a―メチル―1H―インデン―1―イル]―2―メトキシカルボニル―4―ヒドロキシ―1―ヘプテンを70mgとり、THF6mlを加えて溶解した。さらに水6mlを加え、氷冷却バスで冷却し、4Nの水酸化リチウムを0.35ml滴下し、同温度で1時間攪拌した。次に同温度下に濃塩酸を滴下してpH=2に調整し、室温下に3時間攪拌した。反応液に水10ml、酢酸エチル100mlを加えて抽出した。有機層を水で3回、飽和食塩水で2回洗浄した後、無水硫酸マグネシウム上にて乾燥した。乾燥剤を濾別し、溶媒を減圧下留去し(5R)―5―{(2R)―2―[(1R,7aR)―オクタヒドロ―4―ブロモメチレン―7a―メチル―1H―インデン―1―イル]プロピル}―3―メチレンジヒドロ―2(3H)―フラノンを60mg得た。
【0117】
1H―NMR(CDCl3 ,δppm)
6.23(t,1H,J=3Hz),5.62(t,1H,J=2Hz),
5.65(d,1H,J=2Hz),4.59〜4.69(m,1H),
3.01〜3.12(m,1H),2.85〜2.9(m,1H),
2.47〜2.57(m,1H),1.02(d,3H,J=7Hz),
0.59(s,3H)
【0118】
[実施例14]
23(S),25(S)―1α―ヒドロキシビタミンD3 ―26,23―ラクトンの製造
【0119】
【化40】
【0120】
乾燥したナスフラスコにトリフェニルホスフィン28mgをとり、脱気した。そこにトリス(ジベンジリデンアセトン)ジパラジウムクロロホルム19mgを加えてさらに脱気し、窒素雰囲気下に、蒸留したトルエン/ジイソプロピルエチルアミン=1/1の混合溶媒6mlを加え、50℃で20分間攪拌した。次に(3S,5S)―5―{(2R)―2―[(1R,7aR)―オクタヒドロ―4―ブロモメチレン―7a―メチル―1H―インデン―1―イル]プロピル}―3―メチルジヒドロ―2(3H)―フラノンを65mgと、(3S),(5R)―3,5―ビス(トリメチルシリルオキシ)―1―オクテン―7―イン60mgを蒸留したトルエン/ジイソプロピルエチルアミン=1/1の混合溶媒3mlに溶かした溶液を滴下した。この反応液を100℃で1.5時間攪拌した。室温にもどし、反応液を酢酸エチル50ml―飽和硫酸水素カリウム水溶液10mlの中に注ぎ、抽出した。有機層を飽和炭酸水素ナトリウム水溶液、飽和食塩水で洗浄した後、無水硫酸ナトリウム上にて乾燥した。乾燥剤を濾別し、溶媒を減圧下留去し、粗体120mgを得た。これをシリカゲルカラム(メルクゲル、ヘキサン/酢酸エチル=14/1〜9/1)で精製を行い、23(S),25(S)―1α,3―ビス(トリメチルシリルオキシ)ビタミンD3 ―26,23―ラクトンを52mg(収率50%)得た。これを25mlナスフラスコに入れ、メタノール5mlを加えて溶解した。氷冷却バスで冷却し、ここにポリマーに結合したピリジニウムトルエン―4―スルホネートを100mg投入して15時間攪拌した。反応液をセライトで濾過後、溶媒を減圧下留去して、粗体110mgを得た。これをシリカゲルカラム(メルクゲル、ヘキサン/酢酸エチル=2/1〜1/1)で精製を行い、23(S),25(S)―1α―ヒドロキシビタミンD3 ―26,23―ラクトンを28mg(収率72%)得た。
【0121】
1H―NMR(CDCl3 ,δppm)
6.37(d,1H,J=11Hz),6.00(d,1H,J=11Hz),
5.33(s,1H),5.01(s,1H),4.44(br,2H),
4.24(br,1H),1.265(d,3H,J=8Hz),
0.99(d,3H,J=6Hz),0.56(s,3H)
【0122】
[実施例15]
23(S)―1α―ヒドロキシ―27―ノル―25―メチレンビタミンD3 ―26,23―ラクトンの製造
【0123】
【化41】
【0124】
乾燥したナスフラスコにトリフェニルホスフィン22mgをとり、脱気した。そこにトリス(ジベンジリデンアセトン)ジパラジウムクロロホルム14mgを加えてさらに脱気し、窒素雰囲気下に、蒸留したトルエン/ジイソプロピルエチルアミン=1/1の混合溶媒3mlを加え、50℃で20分間攪拌した。次に(5S)―5―{(2R)―2―[(1R,7aR)―オクタヒドロ―4―ブロモメチレン―7a―メチル―1H―インデン―1―イル]プロピル}―3―メチレンジヒドロ―2(3H)―フラノンを51mgと、(3S),(5R)―3,5―ビス(トリメチルシリルオキシ)―1―オクテン―7―イン61mgを蒸留したトルエン/ジイソプロピルエチルアミン=1/1の混合溶媒4mlに溶かした溶液を滴下した。この反応液を100℃で1.5時間攪拌した。室温にもどし、反応液を酢酸エチル50ml―飽和硫酸水素カリウム水溶液10mlの中に注ぎ、抽出した。有機層を飽和炭酸水素ナトリウム水溶液、飽和食塩水で洗浄した後、無水硫酸ナトリウム上にて乾燥した。乾燥剤を濾別し、溶媒を減圧下留去し、粗体120mgを得た。これをシリカゲルセップパック(ウォーターズ、ヘキサン/酢酸エチル=19/1〜9/1)で精製を行い、23(S)―1α,3―ビス(トリメチルシリルオキシ)―27―ノル―25―メチレンビタミンD3 ―26,23―ラクトンを46mg(収率50%)得た。これを25mlナスフラスコに入れ、メタノール5mlを加えて溶解した。氷冷却バスで冷却し、ここにポリマーに結合したピリジニウムトルエン―4―スルホネートを50mg投入して15時間攪拌した。反応液をセライトで濾過後、溶媒を減圧下留去して、粗体110mgを得た。これをシリカセップパック(ウォーターズ、ヘキサン/酢酸エチル=3/1〜1/1)で精製を行い、23(S)―1α―ヒドロキシ―27―ノル―25―メチレンビタミンD3 ―26,23―ラクトン12mg(収率40%)得た。
【0125】
1H―NMR(CDCl3 ,δppm)
6.37(d,1H,J=12Hz),6.22(t,1H,J=3Hz),
6.00(d,1H,J=11Hz),5.62(t,1H,J=3Hz),
5.323(d,1H,J=1Hz),5.00(s,1H),
4.59(t,1H,J=7Hz),4.43〜4.54(br,1H),
4.22〜4.24(br,1H),2.99〜3.11(m,1H),
2.79〜2.85(m,1H),2.48〜2.61(m,2H),
2.28〜2.35(m,1H),1.03(d,3H,J=6Hz),
0.56(s,3H)
【0126】
[実施例16]
23(R)―1α―ヒドロキシ―27―ノル―25―メチレンビタミンD3 ―26,23―ラクトンの製造
【0127】
【化42】
【0128】
乾燥したナスフラスコにトリフェニルホスフィン26mgをとり、脱気した。そこにトリス(ジベンジリデンアセトン)ジパラジウムクロロホルム20mgを加えてさらに脱気し、窒素雰囲気下に、蒸留したトルエン/ジイソプロピルエチルアミン=1/1の混合溶媒3mlを加え、50℃で20分間攪拌した。次に(5R)―5―{(2R)―2―[(1R,7aR)―オクタヒドロ―4―ブロモメチレン―7a―メチル―1H―インデン―1―イル]プロピル}―3―メチレンジヒドロ―2(3H)―フラノンを70mgと、(3S),(5R)―3,5―ビス(トリメチルシリルオキシ)―1―オクテン―7―イン84mgを蒸留したトルエン/ジイソプロピルエチルアミン=1/1の混合溶媒4mlに溶かした溶液を滴下した。この反応液を100℃で1.5時間攪拌した。室温にもどし、反応液を酢酸エチル50ml―飽和硫酸水素カリウム水溶液10mlの中に注ぎ、抽出した。有機層を飽和炭酸水素ナトリウム水溶液、飽和食塩水で洗浄した後、無水硫酸ナトリウム上にて乾燥した。乾燥剤を濾別し、溶媒を減圧下留去し、粗体190mgを得た。これをシリカゲルセップパック(ウォーターズ、ヘキサン/酢酸エチル=19/1〜9/1)で精製を行い、23(R)―1α,3―ビス(トリメチルシリルオキシ)―27―ノル―25―メチレンビタミンD3 ―26,23―ラクトンを50mg(収率40%)得た。これを25mlナスフラスコに入れ、メタノール5mlを加えて溶解した。氷冷却バスで冷却し、ここにポリマーに結合したピリジニウムトルエン―4―スルホネートを100mg投入して15時間攪拌した。反応液をセライトで濾過後、溶媒を減圧下留去して、粗体110mgを得た。これをシリカセップパック(ウォーターズ、ヘキサン/酢酸エチル=3/1〜1/1)で精製を行い、23(R)―1α―ヒドロキシ―27―ノル―25―メチレンビタミンD3 ―26,23―ラクトン14mg(収率43%)得た。
【0129】
1H―NMR(CDCl3 ,δppm)
6.37(d,1H,J=11Hz),6.225(t,1H,J=3Hz),
6.00(d,1H,J=11Hz),5.62(t,1H,J=2Hz),
5.33(t,1H,J=2Hz),5.00(s,1H),
4.59〜4.69(m,1H),4.41〜4.45(m,1H),
4.21〜4.25(m,1H),3.01〜3.10(m,1H),
2.79〜2.85(m,1H),2.47〜2.58(m,2H),
2.28〜2.35(m,1H),1.02(d,3H,J=6Hz),
0.58(s,3H)
[実施例17]
1α,25(OH) 2 D 3 惹起破骨細胞形成に対する抑制作用の測定
マウス(C25/Black6,5週齢,オス)の大腿骨、脛骨より骨髄細胞を分離し、10%牛胎児血清を含むα−MEM培地中で1α,25(OH)2D3(10−8M)存在下、一定濃度の被験化合物を添付し7日間培養した。細胞を酒石酸抵抗性酸フォスファターゼ(TRAP)染色し、核をメチルグリーンで染色した。その後、核が3個以上のTRAP染色された細胞(破骨細胞)を顕微鏡下カウントした。その結果を表1に示す。これより本発明化合物は1α,25(OH)2D3 惹起破骨細胞形成に対する抑制作用を有することがわかる。
【0130】
【表1】
【0131】
[実施例18]
ニワトリ小腸粘膜細胞質内1α,25−ジヒドロキシビタミンD 3 リセプター(VDR)に対する本発明化合物の結合親和性
ニワトリ小腸粘膜細胞質内1α,25−ジヒドロキシビタミンD3 リセプターの単離およびリセプター結合親和性の測定は公知の方法[ステロイド(Steroids),37,33−43(1981)]で行った。すなわち12×75mmのポリプロピレンチューブに20pgの[26,27−メチル−3H]1α,25−ジヒドロキシビタミンD3 (158 Ci/mmol,16800dpm)と被験化合物を50μlのエタノールに溶解して加え、これにリン酸緩衝液(pH7.4)1mlにニワトリ小腸粘膜細胞質内1α,25−ジヒドロキシビタミンD3 リセプター蛋白質0.2mgと1mgのゲラチンを溶解したものを加え、25℃で1時間反応させた。反応後40%ポリエチレングリコール6000溶液1mlを各々のチューブに加え、激しく撹拌後、4℃で2260×gで60分間遠心分離した。沈殿部分のチューブをカッターナイフで切り取り、液体シンチレーション用バイアルに入れ、10mlのジオキサンシンチレーターを加え、液体シンチレーションカウンターでその放射能を測定した。その結果を後記表2に示す。
【0132】
[実施例19]
ウシ胎児血清中ビタミンD結合蛋白質に対する本発明化合物の結合親和性
ウシ胎児血清中ビタミンD結合蛋白質に対する25−ヒドロキシビタミンD3 および本発明化合物の結合親和性は、ジャーナル ステロイド バイオケミストリー モレキュラー バイオロジー(J.Steroid Biochem. Molec.Biol.41,109−112(1992))の方法で行った。すなわち12×105mmのガラスチューブに200pgの[26,27−メチル−3H]25−ヒドロキシビタミンD3 (28 Ci/mmol,31000dpm)を溶解した0.01%トライトンX−100溶液と被験化合物をエタノール10μlに溶解して加えた。これにウシ胎児血清を0.9%塩化ナトリウム含有リン酸緩衝液(pH7.0)で2500倍希釈した溶液0.2mlを加え、4℃で24時間反応後、0.5mlの0.5%チャーコール、0.075%デキストランおよび0.5%ウシ血清アルブミン溶液を加えた。4℃で15分反応後、2260×gで10分間遠心分離し、その上清0.5mlを液体シンチレーションバイアルに取り、液体シンチレーションカウンターでビタミンD結合蛋白質に結合している[26,27−メチル−3H]25−ヒドロキシビタミンD3 の放射能量を測定した。その結果を、実施例18の結果とともに表2に示す。
【0133】
【表2】
【0134】
[実施例20]
骨芽細胞でのコラーゲン合成および非コラーゲン蛋白質合成
マウス骨芽細胞株(MCJT細胞)を10%牛胎児血清(FCS)含有α−MEM培地中に分散させ(1×104cells/ml培地)、このものを2mlずつ35mm培養シャーレに播種し、37℃で5%CO2下で培養した。4日後、コンフルエントに達した後、同一培養液に交換後、被験化合物のエタノール溶液(1×10−4Mおよび1×10−5M)を2μlずつ加えた。コントロール群にはエタノールのみを2μl加えた。これらを37℃で5%CO2下で培養した。培養45時間後に培地を0.1%牛血清アルブミン(BSA)、0.1mMアスコルビン酸、0.5mMフマル酸−β−アミノプロピオニトリルを含むα−MEM培地に交換し、再度被験化合物のエタノール溶液またはエタノールを前回と同量添加してから30分間培養後、4μCiの[3H]プロリンを各々のシャーレに加え、3時間骨芽細胞に取り込ませた。
【0135】
合成されたコラーゲン量および非コラーゲン蛋白質量は、Perterkofsky等の方法[バイオケミストリー(Biochemistry)10,988−994(1971)]で測定した。結果を表3に示す。
【0136】
【表3】
【0137】
【発明の効果】
本発明のビタミンD3 誘導体は、骨形成促進剤、免疫抑制剤、腫瘍細胞増殖抑制剤、高カルシウム血症剤等の医薬品として用いられる。また、前記式[2]、[3]、[4]、[5]、[6]、および[7]で表わされる化合物はその合成中間体として用いられ、本発明方法はそのビタミンD3 誘導体の合成法を提供する。[0001]
[Industrial applications]
The present invention relates to vitamin D useful as a pharmaceutical.3Related to derivatives. More specifically, 1α-hydroxyvitamin D useful as a pharmaceutical such as an osteogenesis promoter, a tumor cell growth inhibitor, an immunosuppressant, a hypercalcemic agent, etc.3The present invention relates to a derivative, a method for producing the derivative, and an intermediate for producing the derivative.
[0002]
[Prior art]
Vitamin D3The fact that metabolites play a very important role as regulators of the metabolism of calcium and phosphate in the living body has been well recognized up to now through many disclosures in patent publications and general literature. In recent years, clinical use has been increasing as a therapeutic drug for various diseases, for example, a large number of compounds capable of inducing differentiation of neoplastic bone marrow cells have been found. On the other hand, recently, a novel vitamin D having an α-hydroxylactone ring in a steroid side chain3Active metabolites have been found [Archives of Biochemistry and Biophysics (Arch. Biochem. Biophys., 204, 339-391 (1980)); FEBS LETTERS 134, 207-211. (1981)]. This compound is 1α, 25-dihydroxyvitamin D3-26,23-lactone, which is represented by the following structural formula.
[0003]
Embedded image
[0004]
This compound has a serum calcium lowering effect (Japanese Patent Application Laid-Open No. 58-118516), a tumor cell growth inhibitory effect (Japanese Patent Application Laid-Open No. 58-210011), and an osteogenic effect (Japanese Patent Application Laid-Open No. 60-185715). No. 2, pp. 139-334), and is expected as a therapeutic agent for various diseases.
[0005]
[Problems to be solved by the invention]
An object of the present invention is to provide a novel vitamin D having a bone formation promoting action and the like.3Finding derivatives.
[0006]
[Means for Solving the Problems]
The present inventors have intensively studied for the above purpose, and as a result, have reached the following invention.
[0007]
That is, the present invention provides the following formula [1]
[0008]
Embedded image
[0009]
Vitamin D represented by3It is a derivative. In the above formula [1], R1May be either a methyl group or a methylene group. Note that R1Represents a methylene group,1And the bond to the 3-position of the lactone ring represents a double bond (the same applies hereinafter). Also, R1Is a methyl group, the configuration at the 3-position asymmetric center of the lactone ring is (S) configuration, and the configuration at the 5-position asymmetric center is either (S) or (R) configuration. Or a mixture in any ratio of the (S) and (R) arrangements. Also R1Is a methylene group, the steric configuration at the 5-position asymmetric center of the lactone ring may be any of the (S) and (R) configurations, and a mixture of any ratio of the (S) and (R) configurations It may be. Among them, those in which the asymmetric center at the 5-position has the (S) configuration are preferred.
[0010]
In the above formula [1], R2And R3Are the same or different and represent a hydrogen atom, a tri (C1~ C7Hydrocarbon) silyl group, or C2~ C8Represents an acyl group.
[0011]
Where R2, R3Is a bird (C1~ C7When it represents a (hydrocarbon) silyl group, specific examples thereof include tri (C) such as trimethylsilyl, triethylsilyl and t-butyldimethylsilyl group.1~ C4Diphenyl (C) such as alkyl) silyl group and t-butyldiphenylsilyl group;1~ C4Preferred examples include an alkyl) silyl group and a tribenzylsilyl group. Further, a dimethyl (2,4,6-tri-t-butylphenoxy) silyl group can be used.
[0012]
Also, R2, R3Is C2~ C8When the acyl group is represented by, specific examples thereof include, for example, acetyl, propionyl, n-butyryl, iso-butyryl, n-valeryl, iso-valeryl, caproyl, enantyl, benzoyl, methoxycarbonyl, ethoxycarbonyl, benzyloxycarbonyl and the like. Can be mentioned. Of these, C2~ C6Acyl groups such as n-butyryl, iso-butyryl, methoxycarbonyl, ethoxycarbonyl, and benzoyl are preferred.
[0013]
Preferred vitamin D of the present invention represented by the above formula [1]3Specific examples of the derivative are as follows.
1) 1α-hydroxyvitamin D3-26,23-lactone
2) 23 (S), 25 (S) -1α-hydroxyvitamin D3-26,23-lactone
3) 23 (R), 25 (S) -1α-hydroxyvitamin D3-26,23-lactone
4) 1α-hydroxy-27-nor-25-methylenevitamin D3-26,23-lactone
5) 23 (S) -1α-hydroxy-27-nor-25-methylenevitamin D3-26,23-lactone
6) 23 (R) -1α-hydroxy-27-nor-25-methylenevitamin D3-26,23-lactone
The present invention also provides a vitamin D represented by the above formula [1].3Includes methods for making derivatives. That is, the following equation [2]
[0014]
Embedded image
[0015]
[In the above formula, X represents a bromine atom or an iodine atom;1Represents a methyl group or a methylene group. ]
A lactone compound represented by the following formula [10]:
[0016]
Embedded image
[0017]
[Wherein, R2And R3Is the same as defined in the above formula [1]. ]
Wherein the compound represented by the formula (1) is reacted in the presence of a palladium catalyst.3This is a method for producing a derivative.
[0018]
This vitamin D3The derivative is subjected to a deprotection reaction as required to obtain the following formula [11]
[0019]
Embedded image
[0020]
[Wherein, R1Is the same as defined in the above formula [1]. ]
Vitamin D represented by3It can be a derivative.
[0021]
Vitamin D of the present invention3In the method for producing a derivative, the configuration at the 3-position and 5-position of the lactone ring of the compound represented by the above formulas [1], [2] and [11] is represented by R1When is a methyl group, the 3-position is in the (S) configuration, but the 5-position may be in either the (S) or (R) configuration, or may be a mixture of any ratio thereof.
[0022]
Also, R1Is a methylene group, the configuration at the 5-position of the lactone ring may be any of the (S) and (R) configurations, and may be a mixture of any ratio thereof.
[0023]
For example, when a compound represented by the above formula [2] in which the asymmetric center at the 3-position of the lactone ring is in the (S) configuration and the asymmetric center at the 5-position is the (S) configuration, The configuration of these sites is conserved, and the asymmetric center at the 3-position of the lactone ring has the (S) configuration and the asymmetric center at the 5-position has the (S) configuration.3A derivative is obtained.
[0024]
Similarly, when a compound represented by the above formula [2] in which the asymmetric center at the 3-position of the lactone ring has the (S) configuration and the asymmetric center at the 5-position has the (R) configuration, Vitamin D represented by the above formula [1], wherein the asymmetric center at the 3-position of the ring has the (S) configuration and the asymmetric center at the 5-position has the (R) configuration.3A derivative is obtained.
[0025]
Vitamin D represented by the above formula [1]3The derivative is produced by reacting the lactone compound represented by the above formula [2] with the compound represented by the above formula [10] in the presence of a palladium catalyst. Here, the palladium catalyst is, for example, a zero-valent or divalent organic palladium compoundandIt is a trisubstituted phosphorus compound (molar ratio: 1: 1 to 1:10). Examples of such organic palladium compounds include tetrakis (triphenylphosphine) palladium, tris (dibenzylideneacetone) palladium, tris (dibenzylideneacetone) palladium chloroform, and palladium acetate. Examples of the trisubstituted phosphorus compound include triphenylphosphine and tributylphosphine. Among them, as the palladium catalyst, tris (dibenzylideneacetone) palladium and triphenylphosphine, tris (dibenzylideneacetone) palladium chloroform and triphenylphosphine (1: 1 to 1:10) are preferable.
[0026]
Here, the lactone compound represented by the above formula [2] and the compound represented by the above formula [10] perform an equimolar reaction stoichiometrically. Usually, it is desirable to use a small excess of the readily available one.
[0027]
The palladium catalyst is used in an amount of 1 to 100 mol%, preferably 5 to 30 mol%, based on the lactone compound represented by the above formula [2].
[0028]
Further, the trisubstituted phosphorus compound is used in an amount of 1 to 10 equivalents based on the organic palladium catalyst to generate active palladium.
[0029]
Examples of the organic solvent used in the present production method include hydrocarbon solvents such as hexane and toluene, ether solvents such as tetrahydrofuran and dioxane, water-soluble solvents such as N, N-dimethylformamide and acetonitrile, and mixed solvents thereof. It is important to use them after degassing sufficiently.
[0030]
The reaction temperature generally ranges from room temperature to the boiling point of the solvent. The reaction time varies depending on the reaction solvent and the reaction temperature used. Usually, either the lactone compound represented by the above formula [2] or the compound represented by the above formula [10] is analyzed using an analytical means such as thin layer chromatography. It is desirable to do until it disappears.
[0031]
In addition, in order to capture a hydrogen halide in addition to the palladium catalyst, the reaction is preferably performed in the presence of a base such as triethylamine and diisopropylethylamine.
[0032]
The amount of the base is preferably at least 1 equivalent to the lactone compound represented by the above formula [2], and it can be used also as a solvent if necessary.
[0033]
In addition, the vitamin D represented by the above formula [1] of the present invention3The derivative can be deprotected, if necessary, to obtain the vitamin D represented by the above formula [11].3It can be a derivative.
[0034]
Such a deprotection reaction can be performed by a known method (for example, Calvery, MJ, Tetrahedron,20, 4609-4619, 1987). In this case, examples of the deprotecting agent include tetrabutylammonium fluoride, pyridinium p-toluenesulfonate and the like.
[0035]
The compound represented by the above formula [2] used as a raw material in the method of the present invention can be synthesized, for example, according to the following scheme. The same applies when X is an iodine atom and the configuration is different.
[0036]
Embedded image
[0037]
Embedded image
[0038]
Embedded image
[0039]
Embedded image
[0040]
That is, the lactone compound represented by the above formula [2] is converted into the following formula [3]
[0041]
Embedded image
[0042]
[Wherein, R1 Is the same as defined in the above formula [1]. ]
By halomethylene conversion of the lactone compound represented by For example, the following equation [8]
[0043]
Embedded image
[0044]
From the compound represented by the following formula [9]
[0045]
Embedded image
[0046]
[In the formula, X represents a bromine atom or an iodine atom. ]
Is obtained.
[0047]
The compound represented by the above formula [3] is represented by the following formula [5]
[0048]
Embedded image
[0049]
[Wherein, R1 Is the same as defined in the above formula [1]. R4 Is a hydrogen atom, tri (C1~ C7 Hydrocarbon) silyl group, or C2~ C8 Represents an acyl group. ]
Can be obtained by deprotecting the lactone compound represented by the formula, if necessary, and then oxidizing it. Further, the lactone compound represented by the above formula [5] is obtained by the following formula [6]
[0050]
Embedded image
[0051]
[Wherein, R4 Is the same as defined in [5]. ]
Can be synthesized from the heptanoic acid derivative represented by On the other hand, the lactone compound represented by the above formula [2] is represented by the following formula [4]
[0052]
Embedded image
[0053]
[In the formula, X represents a bromine atom or an iodine atom. ]
Can be derived from a heptanoic acid derivative represented by
[0054]
Further, the heptanoic acid derivative represented by the above formula [4] is represented by the following formula [7]
[0055]
Embedded image
[0056]
[In the formula, X represents a bromine atom or an iodine atom, and Y represents a p-toluenesulfonyloxy group, a cyano group, or a formyl group. ]
Can be synthesized from the compound represented by These reactions are further illustrated in the examples.
[0057]
The present invention provides the vitamin D represented by the above formula [1].3Also included are compounds represented by the above formulas [2], [3], [4], [5], [6], and [7], which are synthetic intermediates of derivatives.
[0058]
Here, R of the lactone compound represented by the above formulas [3] and [5]1Is a methyl group, the asymmetric center at the 3-position of the lactone ring has the (S) configuration, but the asymmetric center at the 5-position may have either the (R) configuration or the (S) configuration. May be used as a mixture.
[0059]
Further, in the heptanoic acid derivative represented by the above formula [4] or [6], the asymmetric center at the 4-position may be either (R) configuration or (S) configuration. There may be.
[0060]
Specific examples of preferred compounds represented by the above formula [2] of the present invention are as follows.
1) (5S) -5-{(2R) -2-[(1R, 7aR) -octahydro-4-bromomethylene-7a-methyl-1H-inden-1-yl] propyl} -3-methylenedihydro-2 (3H) -Furanone
2) (5R) -5-{(2R) -2-[(1R, 7aR) -octahydro-4-bromomethylene-7a-methyl-1H-inden-1-yl] propyl} -3-methylenedihydro-2 (3H) -Furanone
3) (3S, 5S) -5-{(2R) -2-[(1R, 7aR) -octahydro-4-bromomethylene-7a-methyl-1H-inden-1-yl] propyl} -3-methyldihydro -2 (3H) -furanone
4) (3S, 5R) -5-{(2R) -2-[(1R, 7aR) -octahydro-4-bromomethylene-7a-methyl-1H-inden-1-yl] propyl} -3-methyldihydro -2 (3H) -furanone
5) (5S) -5-{(2R) -2-[(1R, 7aR) -octahydro-4-iodomethylene-7a-methyl-1H-inden-1-yl] propyl} -3-methylenedihydro-2 (3H) -Furanone
6) (5R) -5-{(2R) -2-[(1R, 7aR) -octahydro-4-iodomethylene-7a-methyl-1H-inden-1-yl] propyl} -3-methylenedihydro-2 (3H) -Furanone
7) (3S, 5S) -5-{(2R) -2-[(1R, 7aR) -octahydro-4-iodomethylene-7a-methyl-1H-inden-1-yl] propyl} -3-methyldihydro -2 (3H) -furanone
8) (3S, 5R) -5-{(2R) -2-[(1R, 7aR) -octahydro-4-iodomethylene-7a-methyl-1H-inden-1-yl] propyl} -3-methyldihydro -2 (3H) -furanone
[0061]
Specific examples of preferred compounds represented by the above formula [3] of the present invention are as follows.
1) (5S) -5-{(2R) -2-[(1R, 7aR) -octahydro-4-oxo-7a-methyl-1H-inden-1-yl] propyl} -3-methylenedihydro-2 ( 3H)-Furanone
2) (5R) -5-{(2R) -2-[(1R, 7aR) -octahydro-4-oxo-7a-methyl-1H-inden-1-yl] propyl} -3-methylenedihydro-2 ( 3H)-Furanone
3) (3S, 5S) -5-{(2R) -2-[(1R, 7aR) -octahydro-4-oxo-7a-methyl-1H-inden-1-yl] propyl} -3-methyldihydro- 2 (3H) -furanone
4) (3S, 5R) -5-{(2R) -2-[(1R, 7aR) -octahydro-4-oxo-7a-methyl-1H-inden-1-yl] propyl} -3-methyldihydro- 2 (3H) -furanone
[0062]
Specific examples of preferred compounds represented by the above formula [4] of the present invention are as follows.
1) (4S, 6R) -6-[(1R, 7aR) -octahydro-4-bromomethylene-7a-methyl-1H-inden-1-yl] -2-methoxycarbonyl-4-hydroxy-1-heptene
2) (4R, 6R) -6-[(1R, 7aR) -octahydro-4-bromomethylene-7a-methyl-1H-inden-1-yl] -2-methoxycarbonyl-4-hydroxy-1-heptene
3) (4S, 6R) -6-[(1R, 7aR) -octahydro-4-iodomethylene-7a-methyl-1H-inden-1-yl] -2-methoxycarbonyl-4-hydroxy-1-heptene
4) (4R, 6R) -6-[(1R, 7aR) -octahydro-4-iodomethylene-7a-methyl-1H-inden-1-yl] -2-methoxycarbonyl-4-hydroxy-1-heptene
[0063]
Specific examples of preferred compounds represented by the above formula [5] of the present invention are as follows.
1) (5S) -5-{(2R) -2-[(1R, 7aR) -octahydro-4-hydroxy-7a-methyl-1H-inden-1-yl] propyl} -3-methylenedihydro-2 ( 3H)-Furanone
2) (5R) -5-{(2R) -2-[(1R, 7aR) -octahydro-4-hydroxy-7a-methyl-1H-inden-1-yl] propyl} -3-methylenedihydro-2 ( 3H)-Furanone
3) (3S, 5S) -5-{(2R) -2-[(1R, 7aR) -octahydro-4-hydroxy-7a-methyl-1H-inden-1-yl] propyl} -3-methyldihydro- 2 (3H) -furanone
4) (3S, 5R) -5-{(2R) -2-[(1R, 7aR) -octahydro-4-hydroxy-7a-methyl-1H-inden-1-yl] propyl} -3-methyldihydro- 2 (3H) -furanone
5) (5S) -5-{(2R) -2-[(1R, 7aR) -octahydro-4-trimethylsilyloxy-7a-methyl-1H-inden-1-yl] propyl} -3-methylenedihydro-2 (3H) -Furanone
6) (5R) -5-{(2R) -2-[(1R, 7aR) -octahydro-4-trimethylsilyloxy-7a-methyl-1H-inden-1-yl] propyl} -3-methylenedihydro-2 (3H) -Furanone
7) (3S, 5S) -5-{(2R) -2-[(1R, 7aR) -octahydro-4-trimethylsilyloxy-7a-methyl-1H-inden-1-yl] propyl} -3-methyldihydro -2 (3H) -furanone
8) (3S, 5R) -5-{(2R) -2-[(1R, 7aR) -octahydro-4-trimethylsilyloxy-7a-methyl-1H-inden-1-yl] propyl} -3-methyldihydro -2 (3H) -furanone
9) (5S) -5-{(2R) -2-[(1R, 7aR) -octahydro-4-t-butyldimethylsilyloxy-7a-methyl-1H-inden-1-yl] propyl} -3- Methylene dihydro-2 (3H) -furanone
10) (5R) -5-{(2R) -2-[(1R, 7aR) -octahydro-4-t-butyldimethylsilyloxy-7a-methyl-1H-inden-1-yl] propyl} -3- Methylene dihydro-2 (3H) -furanone
11) (3S, 5S) -5-{(2R) -2-[(1R, 7aR) -octahydro-4-t-butyldimethylsilyloxy-7a-methyl-1H-inden-1-yl] propyl}- 3-methyldihydro-2 (3H) -furanone
12) (3S, 5R) -5-{(2R) -2-[(1R, 7aR) -octahydro-4-tert-butyldimethylsilyloxy-7a-methyl-1H-inden-1-yl] propyl}- 3-methyldihydro-2 (3H) -furanone
[0064]
Specific examples of preferred compounds represented by the above formula [6] of the present invention are as follows.
1) (4S, 6R) -6-[(1R, 7aR) -octahydro-4-hydroxy-7a-methyl-1H-inden-1-yl] -2-methoxycarbonyl-4-hydroxy-1-heptene
2) (4R, 6R) -6-[(1R, 7aR) -octahydro-4-hydroxy-7a-methyl-1H-inden-1-yl] -2-methoxycarbonyl-4-hydroxy-1-heptene
3) (4S, 6R) -6-[(1R, 7aR) -octahydro-4-trimethylsilyloxy-7a-methyl-1H-inden-1-yl] -2-methoxycarbonyl-4-hydroxy-1-heptene
4) (4R, 6R) -6-[(1R, 7aR) -octahydro-4-trimethylsilyloxy-7a-methyl-1H-inden-1-yl] -2-methoxycarbonyl-4-hydroxy-1-heptene
5) (4S, 6R) -6-[(1R, 7aR) -octahydro-4-tert-butyldimethylsilyloxy-7a-methyl-1H-inden-1-yl] -2-methoxycarbonyl-4-hydroxy- 1-heptene
6) (4R, 6R) -6-[(1R, 7aR) -octahydro-4-tert-butyldimethylsilyloxy-7a-methyl-1H-inden-1-yl] -2-methoxycarbonyl-4-hydroxy- 1-heptene
[0065]
Specific examples of preferred compounds represented by the above formula [7] of the present invention are as follows.
1) (2R) -2-[(1R, 7aR) -octahydro-4-bromomethylene-7a-methyl-1H-inden-1-yl] propyl paratoluenesulfonate
2) (3R) -3-[(1R, 7aR) -octahydro-4-bromomethylene-7a-methyl-1H-inden-1-yl] butyronitrile
3) (3R) -3-[(1R, 7aR) -octahydro-4-bromomethylene-7a-methyl-1H-inden-1-yl] butanal
4) (2R) -2-[(1R, 7aR) -octahydro-4-iodomethylene-7a-methyl-1H-inden-1-yl] propyl paratoluenesulfonate
5) (3R) -3-[(1R, 7aR) -octahydro-4-iodomethylene-7a-methyl-1H-inden-1-yl] butyronitrile
6) (3R) -3-[(1R, 7aR) -octahydro-4-iodomethylene-7a-methyl-1H-inden-1-yl] butanal
[0066]
【Example】
Hereinafter, the present invention will be described in more detail with reference to Examples, but the present invention is not limited thereto.
[0067]
[Example 1]
(4S, 6R) -6-[(1R, 7aR) -octahydro-4-hydroxy-7a-methyl-1H-inden-1-yl] -2-methoxycarbonyl-4-hydroxy-1-heptene, and (4R , 6R) -6-[(1R, 7aR) -Octahydro-4-hydroxy-7a-methyl-1H-inden-1-yl] -2-methoxycarbonyl-4-hydroxy-1-heptene
[0068]
Embedded image
[0069]
3.0 g of (3R) -3-[(1R, 7aR) -octahydro-4-hydroxy-7a-methyl-1H-inden-1-yl] butanal is placed in a 500 ml eggplant flask, 100 ml of THF is added, and the mixture is stirred and cooled with ice. Cooled in bath. Here, 3.2 ml of methyl-2-bromomethyl acrylate was added dropwise. Next, 1.37 g of zinc powder and 390 ml of saturated ammonium chloride solution were added, and the mixture was stirred at the same temperature for 45 minutes.
[0070]
The reaction solution was extracted by adding 150 ml of ethyl acetate. The organic layer was washed twice with a saturated saline solution and dried over anhydrous magnesium sulfate. The drying agent was separated by filtration, and the solvent was distilled off under reduced pressure to obtain 5.0 g of a crude product. This was purified by a silica gel column (Merck gel, 250 g, hexane / ethyl acetate = 9/1 to 3/1), and (4S, 6R) -6-[(1R, 7aR) -octahydro-4-hydroxy-7a- Methyl-1H-inden-1-yl] -2-methoxycarbonyl-4-hydroxy-1-heptene (more polar), 2.03 g, and (4R, 6R) -6-[(1R, 7aR) -octahydro- 1.52 g (81% yield) of 4-hydroxy-7a-methyl-1H-inden-1-yl] -2-methoxycarbonyl-4-hydroxy-1-heptene (less polar) was obtained.
[0071]
1H-NMR (CDCl3, Δppm)
6.25 (d, 1H, J = 2 Hz), 5.66 (d, 1H, J = 2 Hz),
4.07 (br, 1H), 3.82 to 3.88 (br, 1H),
3.77 (s, 3H),
2.51 (dd, 1H, J1 = 1 Hz, J2 = 9 Hz),
2.36 (dd, 1H, J1 = 8 Hz, J2 = 14 Hz),
0.96 (s, 1H), 0.94 (d, 3H, J = 6 Hz),
6.27 (d, 1H, J = 1 Hz), 5.69 (d, 1H, J = 1 Hz),
4.07 (br, 1H), 3.80 to 3.86 (br, 1H),
3.77 (s, 3H),
2.69 (dd, 1H, J1 = 1 Hz, J2 = 10 Hz),
2.18 (dd, 1H, J1 = 9 Hz, J2 = 14 Hz),
0.98 (d, 3H, J = 7 Hz), 0.95 (s, 3H)
[0072]
[Example 2]
(5S) -5-{(2R) -2-[(1R, 7aR) -octahydro-4-hydroxy-7a-methyl-1H-inden-1-yl] propyl} -3-methylenedihydro-2 (3H) ―Furanone production
[0073]
Embedded image
[0074]
(4S, 6R) -6-[(1R, 7aR) -octahydro-4-hydroxy-7a-methyl-1H-inden-1-yl] -2-methoxycarbonyl-4-hydroxy-1-heptene in a 100 ml eggplant flask Was dissolved in 15 ml of THF. Further, 15 ml of water was added and stirred, and the mixture was cooled in an ice cooling bath. 6 ml of a 4N aqueous lithium hydroxide solution was added thereto, and the mixture was stirred at the same temperature for 1 hour. Next, concentrated hydrochloric acid was added dropwise at the same temperature to adjust the pH to 2, and the mixture was stirred at room temperature for 3 hours. The reaction solution was extracted by adding 50 ml of water and 200 ml of ethyl acetate. The organic layer was further washed three times with water and twice with a saturated saline solution, and then dried over anhydrous magnesium sulfate. The drying agent is filtered off, and the solvent is distilled off under reduced pressure. (5S) -5-{(2R) -2-[(1R, 7aR) -octahydro-4-hydroxy-7a-methyl-1H-indene-1- 880 mg of [yl] propyl} -3-methylenedihydro-2 (3H) -furanone was obtained.
[0075]
1H-NMR (CDCl3, Δppm)
6.22 (t, 1H, J = 3 Hz), 5.62 (t, 1H, J = 2 Hz),
4.58 (dd, 1H, J1 = 7 Hz, J2 = 14 Hz),
4.08 (d, 1H, J = 3 Hz), 3.01 to 3.10 (m, 1H),
2.56-2.6 (m, 1H), 1.00 (d, 3H, J = 7 Hz),
0.95 (s, 3H)
[0076]
[Example 3]
(5R) -5-{(2R) -2-[(1R, 7aR) -octahydro-4-hydroxy-7a-methyl-1H-inden-1-yl] propyl} -3-methylenedihydro-2 (3H) ―Furanone production
[0077]
Embedded image
[0078]
(4R, 6R) -6-[(1R, 7aR) -octahydro-4-hydroxy-7a-methyl-1H-inden-1-yl] -2-methoxycarbonyl-4-hydroxy-1-heptene in a 100 ml eggplant flask Of 570 mg, and dissolved by adding 5 ml of THF. Further, 5 ml of water was added thereto, followed by stirring and cooling with an ice cooling bath. 3 ml of a 4N aqueous solution of lithium hydroxide was added thereto, followed by stirring at the same temperature for 1 hour. Next, concentrated hydrochloric acid was added dropwise at the same temperature to adjust the pH to 2, and the mixture was stirred at room temperature for 3 hours. The reaction solution was extracted by adding 50 ml of water and 200 ml of ethyl acetate. The organic layer was further washed three times with water and twice with a saturated saline solution, and then dried over anhydrous magnesium sulfate. The drying agent is separated by filtration, and the solvent is distilled off under reduced pressure. (5R) -5-{(2R) -2-[(1R, 7aR) -octahydro-4-hydroxy-7a-methyl-1H-indene-1- 451 mg of yl] propyl} -3-methylenedihydro-2 (3H) -furanone was obtained.
[0079]
[Example 4]
(5S) -5-{(2R) -2-[(1R, 7R) -octahydro-4-oxo-7a-methyl-1H-inden-1-yl] propyl} -3-methylenedihydro-2 (3H) ―Furanone production
[0080]
Embedded image
[0081]
2.38 g of pyridinium dichromate was placed in a 200 ml eggplant flask, 50 ml of DMF was added, and the mixture was cooled in an ice cooling bath. Here, (5S) -5-{(2R) -2-[(1R, 7R) -octahydro-4-hydroxy-7a-methyl-1H-inden-1-yl] propyl} -3-methylenedihydro-2 ( A solution of 880 mg of 3H) -furanone dissolved in 20 ml of DMF was added dropwise, and the mixture was stirred at room temperature for 3 hours. 200 ml of ether was added to the reaction solution, and insolubles were separated by filtration, washed with water and then with a saturated saline solution, and then dried over anhydrous magnesium sulfate. The drying agent was separated by filtration, and the solvent was distilled off under reduced pressure to obtain 1.02 g of a crude product. This was purified using a silica gel column (Daisogel IR-60, 150 g, hexane / ethyl acetate = 3/1 to 2/1), and (5S)-{(2R) -2-[(1R, 7aR) -octahydro) Thus, 700 mg (yield: 69%) of 4--4-oxo-7a-methyl-1H-inden-1-yl] propyl} -3-methylenedihydro-2 (3H) -furanone was obtained.
[0082]
1H-NMR (CDCl3, Δppm)
6.23 (t, 1H, J = 3 Hz), 5.63 (t, 1H, J = 2 Hz),
4.6 to 4.7 (m, 1H), 3.0 to 3.13 (m, 1H),
2.4 to 2.6 (m, 1H), 1.05 (d, 3H, J = 7 Hz),
0.67 (s, 3H)
[0083]
[Example 5]
(5R) -5-{(2R) -2-[(1R, 7aR) -octahydro-4-oxo-7a-methyl-1H-inden-1-yl] propyl} -3-methylenedihydro-2 (3H) ―Furanone production
[0084]
Embedded image
[0085]
648 mg of pyridinium dichromate was placed in a 200 ml eggplant flask, 10 ml of DMF was added, and the mixture was cooled in an ice cooling bath. Here, (5R) -5-{(2R) -2-[(1R, 7aR) -octahydro-4-hydroxy-7a-methyl-1H-inden-1-yl] propyl} -3-methylenedihydro-2 ( A solution of 240 mg of 3H) -furanone dissolved in 10 ml of DMF was added dropwise, and the mixture was stirred at room temperature for 3 hours. 100 ml of ether was added to the reaction solution, and the insoluble matter was separated by filtration, washed with water and then with a saturated saline solution, and dried over anhydrous magnesium sulfate. The drying agent was separated by filtration, and the solvent was distilled off under reduced pressure to obtain 600 mg of a crude product. This was purified by a silica gel column (Daisogel IR-60, 100 g, hexane / ethyl acetate = 3/1 to 2/1), and (5R)-{(2R) -2-[(1R, 7aR) -octahydro) 327 mg of 4-oxo-7a-methyl-1H-inden-1-yl] propyl} -3-methylenedihydro-2 (3H) -furanone was obtained.
[0086]
1H-NMR (CDCl3, Δppm)
6.23 (t, 1H, J = 3 Hz), 5.63 (t, 1H, J = 2 Hz),
4.59 (t, 1H, J = 7 Hz), 3.0 to 3.10 (m, 1H),
2.4 to 2.6 (m, 1H), 1.07 (d, 3H, J = 6 Hz),
0.66 (s, 3H)
[0087]
[Example 6]
(3S, 5S) -5-{(2R) -2-[(1R, 7aR) -octahydro-4-oxo-7a-methyl-1H-inden-1-yl] propyl} -3-methyldihydro-2 ( 3H)-Production of furanone
[0088]
Embedded image
[0089]
(5S) -5-{(2R) -2-[(1R, 7aR) -octahydro-4-oxo-7a-methyl-1H-inden-1-yl] propyl} -3-methylenedihydro- 200 mg of 2 (3H) -furanone was taken, and 50 ml of ethanol was added and dissolved by stirring. Under a nitrogen atmosphere, 50 mg of 10% Pd / carbon was charged, the atmosphere was replaced with a hydrogen atmosphere (balloon), and the mixture was stirred at room temperature for 3 hours. After the replacement with nitrogen, the catalyst was filtered off, and the solvent was distilled off under reduced pressure. Thus, 185 mg of [-1-yl] propyl} -3-methyldihydro-2 (3H) -furanone was obtained.
[0090]
1H-NMR (CDCl3, Δppm)
4.40 to 4.51 (m, 1H), 2.62 to 2.72 (m, 1H),
2.41 to 2.51 (m, 2H), 2.27 (d, 3H, J = 7 Hz),
1.03 (d, 3H, J = 7 Hz), 0.66 (s, 3H)
[0091]
[Example 7]
(3S, 5S) -5-{(2R) -2-[(1R, 7aR) -octahydro-4-bromomethylene-7a-methyl-1H-inden-1-yl] propyl} -3-methyldihydro-2 (3H)-Production of furanone
[0092]
Embedded image
[0093]
1.79 g of bromomethylenetriphenylphosphonium bromide was placed in a 100 ml eggplant-shaped flask, 20 ml of dry THF was added thereto, followed by stirring and cooling in a -70 ° C cooling bath. Here, 1M [(CH3)3Si]23.9 ml of NNa / THF solution was added dropwise, and the mixture was stirred at the same temperature for 1 hour. Next, (3S, 5S) -5-{(2R) -2-[(1R, 7aR) -octahydro-4-oxo-7a-methyl-1H-inden-1-yl] propyl} -3-methyldihydro- A solution of 120 mg of 2 (3H) -furanone dissolved in 5 ml of dry THF was added dropwise. The cooling bath was removed and the mixture was stirred for 2 hours. Next, hexane was added thereto, and insolubles were separated by filtration, and the solvent was distilled off under reduced pressure to obtain 1.2 g of a crude product. This was purified using a silica gel column (Daisogel IR-60, 80 g, hexane / ethyl acetate = 15/1), and (3S, 5S) -5-{(2R) -2-[(1R, 7aR) -octahydro] There was obtained 69 mg (46% yield) of 4--4-bromomethylene-7a-methyl-1H-inden-1-yl] propyl} -3-methyldihydro-2 (3H) -furanone.
[0094]
1H-NMR (CDCl3, Δppm)
5.65 (d, 1H, J = 2 Hz), 4.40 to 4.50 (m, 1H),
2.85 to 2.90 (m, 1H), 2.62 to 2.72 (m, 1H),
2.41 to 2.50 (m, 1H), 2.67 (d, 3H, J = 7 Hz),
1.00 (d, 3H, J = 7 Hz), 0.58 (s, 3H)
[0095]
Example 8
Production of (2R) -2-[(1R, 7aR) -octahydro-4-bromomethylene-7a-methyl-1H-inden-1-yl] propyl paratoluenesulfonate
[0096]
Embedded image
[0097]
2.39 g of bromomethylenetriphenylphosphonium bromide was placed in a 100-ml eggplant flask, 40 ml of dry THF was added, the mixture was stirred, and cooled in a -70 ° C cooling bath. Here, 1M [(CH3)3Si]25.28 ml of an NNa / THF solution was added dropwise, and the mixture was stirred at the same temperature for 1 hour. Next, a solution of 300 mg of (2R) -2-[(1R, 7aR) -octahydro-4-oxo-7a-methyl-1H-inden-1-yl] propylparatoluenesulfonate dissolved in 10 ml of dry THF was added dropwise. The cooling bath was removed and the mixture was stirred for 1 hour. Next, hexane was added thereto, and the insoluble matter was separated by filtration. The solvent was distilled off under reduced pressure to obtain 2.5 g of a crude product. This was purified by a silica gel column (Merck gel, 100 g, hexane / ethyl acetate = 14/1, 9/1), and {(2R) -2-[(1R, 7aR) -octahydro-4-bromomethylene-7a-] was purified. 178 mg (yield 48%) of methyl-1H-inden-1-yl] propyl paratoluenesulfonate was obtained.
[0098]
1H-NMR (CDCl3, Δppm)
7.78 (d, 2H, J = 8 Hz), 7.35 (d, 2H, J = 8 Hz),
5.64 (s, 1H),
3.96 (dd, 1H, J1 = 3 Hz, J2 = 9 Hz),
3.82 (dd, 1H, J1 = 6 Hz, J2 = 9 Hz),
2.45 (s, 3 Hz), 0.99 (d, 3H, J = 7 Hz),
0.53 (s, 3H)
[0099]
[Example 9]
Production of (3R) -3-[(1R, 7aR) -octahydro-4-bromomethylene-7a-methyl-1H-inden-1-yl] butyronitrile
[0100]
Embedded image
[0101]
178 mg of (2R) -2-[(1R, 7aR) -octahydro-4-bromomethylene-7a-methyl-1H-inden-1-yl] propyl paratoluenesulfonate was placed in a 50 ml eggplant flask, and dissolved in 6 ml of DMF. 215 mg of KCN was added thereto, and the mixture was stirred in a 50 ° C bath for 24 hours. 50 ml of water was added to the reaction solution, and extracted with ether. The organic layer was washed with water and saturated saline, then dried over anhydrous magnesium sulfate, and the desiccant was filtered off. The solvent was distilled off under reduced pressure to obtain 110 mg of a crude product. This was purified by a silica gel column (Daisogel, hexane / ethyl acetate = 14/1) to give (3R) -3-[(1R, 7aR) -octahydro-4-bromomethylene-7a-methyl-1H-indene-. 84 mg (yield 69%) of 1-yl] butyronitrile was obtained.
[0102]
1H-NMR (CDCl3, Δppm)
5.67 (s, 1H), 2.86 to 2.91 (m, 1H),
2.21 to 2.35 (m, 2H), 1.18 (d, 3H, J = 6 Hz),
0.59 (s, 3H)
[0103]
[Example 10]
Production of (3R) -3-[(1R, 7aR) -octahydro-4-bromomethylene-7a-methyl-1H-inden-1-yl] butanal
[0104]
Embedded image
[0105]
84 mg of (3R) -3-[(1R, 7aR) -octahydro-4-bromomethylene-7a-methyl-1H-inden-1-yl] butyronitrile was placed in a 25 ml eggplant flask, and dissolved in 5 ml of dry dichloromethane. Cool in a −70 ° C. bath and add 1.5 M3)2CHCH2]2660 μl of an AlH / toluene solution was added dropwise. The mixture was stirred at the same temperature for 1 hour, 0.5 ml of saturated sodium sulfate aqueous solution, 0.3 ml of methanol, 0.5 ml of 2N hydrochloric acid and 15 ml of ethyl acetate were added, and the mixture was stirred for 30 minutes. The reaction solution was filtered through celite, washed with saturated aqueous ammonium chloride and then with saturated saline, dried over anhydrous magnesium sulfate, and the desiccant was filtered off. The solvent was distilled off under reduced pressure to obtain 85 mg of (3R) -3-[(1R, 7aR) -octahydro-4-bromomethylene-7a-methyl-1H-inden-1-yl] butanal.
[0106]
[Example 11]
(4S, 6R) -6-[(1R, 7aR) -octahydro-4-bromomethylene-7a-methyl-1H-inden-1-yl] -2-methoxycarbonyl-4-hydroxy-1-heptene, and ( Production of 4R, 6R) -6-[(1R, 7aR) -octahydro-4-bromomethylene-7a-methyl-1H-inden-1-yl] -2-methoxycarbonyl-4-hydroxy-1-heptene
[0107]
Embedded image
[0108]
105 mg of (3R) -3-[(1R, 7aR) -octahydro-4-bromomethylene-7a-methyl-1H-inden-1-yl] butanal was placed in a 50 ml eggplant flask, and dissolved in 8 ml of dry THF. The mixture was cooled in an ice cooling bath, and 84 μl of methyl-2-bromomethyl acrylate was added dropwise. Further, 35 mg of zinc powder and 10 ml of a saturated ammonium chloride solution were added, and the mixture was stirred at the same temperature for 1 hour. The reaction solution was extracted with ethyl acetate, and the organic layer was washed with saturated saline and then dried over anhydrous magnesium sulfate. After filtering off the drying agent, the solvent was distilled off under reduced pressure to obtain 166 mg of a crude product. This was purified by a silica gel column (Merck gel, hexane / ethyl acetate = 9/1) to give (4S, 6R) -6-[(1R, 7aR) -octahydro-4-bromomethylene-7a-methyl-1H-indene. -1 -yl] -2-methoxycarbonyl-4-hydroxy-1-heptene 43 mg and (4R, 6R) -6-[(1R, 7aR) -octahydro-4-bromomethylene-7a-methyl-1H-indene- 1-yl] -2-methoxycarbonyl-4-hydroxy-1-heptene 55 mg was obtained.
[0109]
1H-NMR (CDCl3, Δppm)
6.269 (d, 1H, J = 1 Hz), 5.66 (d, 2H, J = 10 Hz),
3.77 (s, 3H), 2.84 to 2.93 (m, 1H),
2.65 to 2.72 (m, 1H), 2.13 to 2.27 (m, 1H),
1.02 (d, 3H, J = 7 Hz), 0.58 (s, 3H),
6.249 (d, 1H, J = 1 Hz), 5.65 (d, 2H, J = 5 Hz),
3.77 (s, 3H), 2.84 to 2.90 (m, 1H),
2.53 to 2.55 (m, 1H), 2.31 to 2.39 (m, 1H),
0.97 (d, 3H, J = 7 Hz), 0.59 (s, 3H)
[0110]
[Example 12]
(5S) -5-{(2R) -2-[(1R, 7aR) -octahydro-4-bromomethylene-7a-methyl-1H-inden-1-yl] propyl} -3-methylenedihydro-2 (3H )-Manufacture of furanone
[0111]
Embedded image
[0112]
(4S, 6R) -6-[(1R, 7aR) -octahydro-4-bromomethylene-7a-methyl-1H-inden-1-yl] -2-methoxycarbonyl-4-hydroxy-1- was placed in a 50 ml eggplant flask. 55 mg of heptene was taken and dissolved by adding 6 ml of THF. Further, 6 ml of water was added, the mixture was cooled in an ice cooling bath, 0.25 ml of 4N lithium hydroxide was added dropwise, and the mixture was stirred at the same temperature for 1 hour. Next, concentrated hydrochloric acid was added dropwise at the same temperature to adjust the pH to 2, and the mixture was stirred at room temperature for 3 hours. The reaction solution was extracted by adding 10 ml of water and 100 ml of ethyl acetate. The organic layer was washed three times with water and twice with a saturated saline solution, and then dried over anhydrous magnesium sulfate. The drying agent is filtered off, and the solvent is distilled off under reduced pressure. (5S) -5-{(2R) -2-[(1R, 7aR) -octahydro-4-bromomethylene-7a-methyl-1H-indene-1 -Yl] propyl} -3-methylenedihydro-2 (3H) -furanone was obtained in an amount of 51 mg.
[0113]
1H-NMR (CDCl3, Δppm)
6.23 (t, 1H, J = 3 Hz), 5.62 (t, 1H, J = 2 Hz),
5.65 (d, 1H, J = 2 Hz),
4.12 (dd, 1H, J1 = 7 Hz, J2 = 14 Hz),
3.00 to 3.11 (m, 1H), 2.85 to 2.9 (m, 1H),
2.47 to 2.57 (m, 1H), 1.03 (d, 3H, J = 7 Hz),
0.58 (s, 3H)
[0114]
Example 13
(5R) -5-{(2R) -2-[(1R, 7aR) -octahydro-4-bromomethylene-7a-methyl-1H-inden-1-yl] propyl} -3-methylenedihydro-2 (3H )-Manufacture of furanone
[0115]
Embedded image
[0116]
(4R, 6R) -6-[(1R, 7aR) -octahydro-4-bromomethylene-7a-methyl-1H-inden-1-yl] -2-methoxycarbonyl-4-hydroxy-1- 70 mg of heptene was taken and dissolved by adding 6 ml of THF. Further, 6 ml of water was added, the mixture was cooled in an ice cooling bath, 0.35 ml of 4N lithium hydroxide was added dropwise, and the mixture was stirred at the same temperature for 1 hour. Next, concentrated hydrochloric acid was added dropwise at the same temperature to adjust the pH to 2, and the mixture was stirred at room temperature for 3 hours. The reaction solution was extracted by adding 10 ml of water and 100 ml of ethyl acetate. The organic layer was washed three times with water and twice with a saturated saline solution, and then dried over anhydrous magnesium sulfate. The drying agent is filtered off, and the solvent is distilled off under reduced pressure. (5R) -5-{(2R) -2-[(1R, 7aR) -octahydro-4-bromomethylene-7a-methyl-1H-indene-1 -Yl] propyl} -3-methylenedihydro-2 (3H) -furanone was obtained in an amount of 60 mg.
[0117]
1H-NMR (CDCl3, Δppm)
6.23 (t, 1H, J = 3 Hz), 5.62 (t, 1H, J = 2 Hz),
5.65 (d, 1H, J = 2 Hz), 4.59 to 4.69 (m, 1H),
3.01 to 3.12 (m, 1H), 2.85 to 2.9 (m, 1H),
2.47 to 2.57 (m, 1H), 1.02 (d, 3H, J = 7 Hz),
0.59 (s, 3H)
[0118]
[Example 14]
23 (S), 25 (S) -1α-hydroxyvitamin D3Production of -26,23-lactone
[0119]
Embedded image
[0120]
28 mg of triphenylphosphine was placed in a dried eggplant flask and degassed. Thereto was added 19 mg of tris (dibenzylideneacetone) dipalladium chloroform, and the mixture was further degassed. Under a nitrogen atmosphere, 6 ml of a mixed solvent of distilled toluene / diisopropylethylamine = 1/1 was added, and the mixture was stirred at 50 ° C. for 20 minutes. Next, (3S, 5S) -5-{(2R) -2-[(1R, 7aR) -octahydro-4-bromomethylene-7a-methyl-1H-inden-1-yl] propyl} -3-methyldihydro Mixture of 65mg of -2 (3H) -furanone and 60mg of (3S), (5R) -3,5-bis (trimethylsilyloxy) -1-octen-7-yne, toluene / diisopropylethylamine = 1/1 A solution dissolved in 3 ml of the solvent was added dropwise. The reaction was stirred at 100 ° C. for 1.5 hours. After returning to room temperature, the reaction solution was poured into 50 ml of ethyl acetate-10 ml of a saturated aqueous solution of potassium hydrogen sulfate and extracted. The organic layer was washed with a saturated aqueous solution of sodium hydrogen carbonate and a saturated saline solution, and then dried over anhydrous sodium sulfate. The drying agent was separated by filtration, and the solvent was distilled off under reduced pressure to obtain 120 mg of a crude product. This was purified on a silica gel column (Merck gel, hexane / ethyl acetate = 14/1 to 9/1) to give 23 (S), 25 (S) -1α, 3-bis (trimethylsilyloxy) vitamin D352 mg (yield 50%) of -26,23-lactone was obtained. This was put into a 25 ml eggplant flask, and dissolved by adding 5 ml of methanol. The mixture was cooled in an ice cooling bath, and 100 mg of pyridinium toluene-4-sulfonate bonded to the polymer was added thereto and stirred for 15 hours. After the reaction solution was filtered through celite, the solvent was distilled off under reduced pressure to obtain 110 mg of a crude product. This was purified using a silica gel column (Merck gel, hexane / ethyl acetate = 2/1 to 1/1) to obtain 23 (S), 25 (S) -1α-hydroxyvitamin D.328 mg (yield: 72%) of -26,23-lactone was obtained.
[0121]
1H-NMR (CDCl3, Δppm)
6.37 (d, 1H, J = 11 Hz), 6.00 (d, 1H, J = 11 Hz),
5.33 (s, 1H), 5.01 (s, 1H), 4.44 (br, 2H),
4.24 (br, 1H), 1.265 (d, 3H, J = 8 Hz),
0.99 (d, 3H, J = 6 Hz), 0.56 (s, 3H)
[0122]
[Example 15]
23 (S) -1α-hydroxy-27-nor-25-methylenevitamin D3Production of -26,23-lactone
[0123]
Embedded image
[0124]
22 mg of triphenylphosphine was placed in a dried eggplant flask and degassed. Thereto was added 14 mg of tris (dibenzylideneacetone) dipalladium chloroform, followed by further degassing. Under a nitrogen atmosphere, 3 ml of a mixed solvent of distilled toluene / diisopropylethylamine = 1/1 was added, and the mixture was stirred at 50 ° C. for 20 minutes. Next, (5S) -5-{(2R) -2-[(1R, 7aR) -octahydro-4-bromomethylene-7a-methyl-1H-inden-1-yl] propyl} -3-methylenedihydro-2 (3H) -Furanone (51 mg) and (3S), (5R) -3,5-bis (trimethylsilyloxy) -1-octene-7-yne (61 mg) distilled toluene / diisopropylethylamine = 1/1 mixed solvent (4 ml) Was added dropwise. The reaction was stirred at 100 ° C. for 1.5 hours. After returning to room temperature, the reaction solution was poured into 50 ml of ethyl acetate-10 ml of a saturated aqueous solution of potassium hydrogen sulfate and extracted. The organic layer was washed with a saturated aqueous solution of sodium hydrogen carbonate and a saturated saline solution, and then dried over anhydrous sodium sulfate. The drying agent was separated by filtration, and the solvent was distilled off under reduced pressure to obtain 120 mg of a crude product. This was purified with a silica gel Seppak (Waters, hexane / ethyl acetate = 19/1 to 9/1) to give 23 (S) -1α, 3-bis (trimethylsilyloxy) -27-nor-25-methylenevitamin D346 mg (yield 50%) of -26,23-lactone was obtained. This was put into a 25 ml eggplant flask, and dissolved by adding 5 ml of methanol. After cooling in an ice cooling bath, 50 mg of pyridinium toluene-4-sulfonate bonded to the polymer was added thereto, and the mixture was stirred for 15 hours. After the reaction solution was filtered through celite, the solvent was distilled off under reduced pressure to obtain 110 mg of a crude product. This was purified using a silica sepp pack (Waters, hexane / ethyl acetate = 3/1 to 1/1) to give 23 (S) -1α-hydroxy-27-nor-25-methylenevitamin D312 mg of -26,23-lactone (40% yield) was obtained.
[0125]
1H-NMR (CDCl3, Δppm)
6.37 (d, 1H, J = 12 Hz), 6.22 (t, 1H, J = 3 Hz),
6.00 (d, 1H, J = 11 Hz), 5.62 (t, 1H, J = 3 Hz),
5.323 (d, 1H, J = 1 Hz), 5.00 (s, 1H),
4.59 (t, 1H, J = 7 Hz), 4.43 to 4.54 (br, 1H),
4.22 to 4.24 (br, 1H), 2.99 to 3.11 (m, 1H),
2.79 to 2.85 (m, 1H), 2.48 to 2.61 (m, 2H),
2.28 to 2.35 (m, 1H), 1.03 (d, 3H, J = 6 Hz),
0.56 (s, 3H)
[0126]
[Example 16]
23 (R) -1α-hydroxy-27-nor-25-methylenevitamin D3Production of -26,23-lactone
[0127]
Embedded image
[0128]
26 mg of triphenylphosphine was placed in a dried eggplant flask and degassed. 20 mg of tris (dibenzylideneacetone) dipalladium chloroform was added thereto, followed by further degassing, 3 ml of a mixed solvent of distilled toluene / diisopropylethylamine = 1/1 was added under a nitrogen atmosphere, and the mixture was stirred at 50 ° C. for 20 minutes. Next, (5R) -5-{(2R) -2-[(1R, 7aR) -octahydro-4-bromomethylene-7a-methyl-1H-inden-1-yl] propyl} -3-methylenedihydro-2 70 mg of (3H) -furanone and 4 ml of a mixed solvent of toluene / diisopropylethylamine = 1/1 obtained by distilling 84 mg of (3S), (5R) -3,5-bis (trimethylsilyloxy) -1-octene-7-yne Was added dropwise. The reaction was stirred at 100 ° C. for 1.5 hours. After returning to room temperature, the reaction solution was poured into 50 ml of ethyl acetate-10 ml of a saturated aqueous solution of potassium hydrogen sulfate and extracted. The organic layer was washed with a saturated aqueous solution of sodium hydrogen carbonate and a saturated saline solution, and then dried over anhydrous sodium sulfate. The drying agent was filtered off, and the solvent was distilled off under reduced pressure to obtain 190 mg of a crude product. This was purified with a silica gel Seppak (Waters, hexane / ethyl acetate = 19/1 to 9/1) to give 23 (R) -1α, 3-bis (trimethylsilyloxy) -27-nor-25-methylenevitamin D350 mg (yield 40%) of -26,23-lactone was obtained. This was put into a 25 ml eggplant flask, and dissolved by adding 5 ml of methanol. The mixture was cooled in an ice cooling bath, and 100 mg of pyridinium toluene-4-sulfonate bonded to the polymer was added thereto and stirred for 15 hours. After the reaction solution was filtered through celite, the solvent was distilled off under reduced pressure to obtain 110 mg of a crude product. This was purified using a silica sep pack (Waters, hexane / ethyl acetate = 3/1 to 1/1), and 23 (R) -1α-hydroxy-27-nor-25-methylenevitamin D was purified.314 mg (43% yield) of -26,23-lactone was obtained.
[0129]
1H-NMR (CDCl3, Δppm)
6.37 (d, 1H, J = 11 Hz), 6.225 (t, 1H, J = 3 Hz),
6.00 (d, 1H, J = 11 Hz), 5.62 (t, 1H, J = 2 Hz),
5.33 (t, 1H, J = 2 Hz), 5.00 (s, 1H),
4.59 to 4.69 (m, 1H), 4.41 to 4.45 (m, 1H),
4.21 to 4.25 (m, 1H), 3.01 to 3.10 (m, 1H),
2.79 to 2.85 (m, 1H), 2.47 to 2.58 (m, 2H),
2.28 to 2.35 (m, 1H), 1.02 (d, 3H, J = 6 Hz),
0.58 (s, 3H)
[Example 17]
1α, 25 (OH) 2 D 3 Measurement of inhibitory effect on induced osteoclast formation
Bone marrow cells were isolated from the femur and tibia of a mouse (C25 / Black, 5 weeks old, male), and 1α, 25 (OH) was added in α-MEM medium containing 10% fetal bovine serum.2D3(10-8M) In the presence, a test compound at a certain concentration was attached and cultured for 7 days. Cells were stained with tartrate-resistant acid phosphatase (TRAP) and nuclei were stained with methyl green. Then, TRAP-stained cells with three or more nuclei (osteoclasts) were counted under a microscope. Table 1 shows the results. From this, the compound of the present invention is 1α, 25 (OH)2D3 It turns out that it has an inhibitory effect on induced osteoclast formation.
[0130]
[Table 1]
[0131]
[Example 18]
1α, 25-dihydroxyvitamin D in the cytoplasm of chicken intestinal mucosa 3 Binding Affinity of Compounds of the Invention for Receptors (VDR)
1α, 25-dihydroxyvitamin D in the cytoplasm of chicken intestinal mucosa3Isolation of the receptor and measurement of the receptor binding affinity were performed by a known method [Steroids, 37, 33-43 (1981)]. That is, 20 pg of [26,27-methyl-3H] 1α, 25-dihydroxyvitamin D3(158 Ci / mmol, 16800 dpm) and a test compound dissolved in 50 μl of ethanol were added, and 1 ml of phosphate buffer (pH 7.4) and 1α, 25-dihydroxyvitamin D in the cytoplasm of chicken intestinal mucosa were added thereto.3A solution prepared by dissolving 0.2 mg of receptor protein and 1 mg of gelatin was added, and reacted at 25 ° C. for 1 hour. After the reaction, 1 ml of a 40% polyethylene glycol 6000 solution was added to each tube. After vigorous stirring, the mixture was centrifuged at 4 ° C. and 2260 × g for 60 minutes. The tube at the settling portion was cut off with a cutter knife, placed in a vial for liquid scintillation, 10 ml of dioxane scintillator was added, and the radioactivity was measured with a liquid scintillation counter. The results are shown in Table 2 below.
[0132]
[Example 19]
Binding Affinity of the Compound of the Invention for Vitamin D Binding Protein in Fetal Bovine Serum
25-Hydroxyvitamin D against vitamin D binding protein in fetal calf serum3 The binding affinity of the compound of the present invention was determined by the method described in Journal Steroid Biochemistry Molecular Biology (J. Steroid Biochem. Molec. Biol. 41, 109-112 (1992)). That is, 200 pg of [26,27-methyl-3H] 25-hydroxyvitamin D3(28 Ci / mmol, 31000 dpm) in which a 0.01% Triton X-100 solution and a test compound were dissolved in 10 μl of ethanol and added. To this was added 0.2 ml of a solution obtained by diluting fetal bovine serum 2500-fold with a phosphate buffer solution (pH 7.0) containing 0.9% sodium chloride, and after reacting at 4 ° C. for 24 hours, 0.5 ml of 0.5% 0.5% Charcoal, 0.075% dextran and 0.5% bovine serum albumin solution were added. After reaction at 4 ° C. for 15 minutes, the mixture was centrifuged at 2260 × g for 10 minutes, and 0.5 ml of the supernatant was placed in a liquid scintillation vial, and bound to the vitamin D binding protein with a liquid scintillation counter [26,27-methyl]. −3H] 25-hydroxyvitamin D3Was measured for radioactivity. The results are shown in Table 2 together with the results of Example 18.
[0133]
[Table 2]
[0134]
[Example 20]
Collagen synthesis and non-collagen protein synthesis in osteoblasts
A mouse osteoblast cell line (MCJT cell) was dispersed in an α-MEM medium containing 10% fetal calf serum (FCS) (1 × 104cells / ml medium), and inoculated in a volume of 2 ml each in a 35 mm culture petri dish at 37 ° C. and 5% CO 2.2Cultured underneath. Four days later, after reaching confluence, the medium was replaced with the same culture solution, and then an ethanol solution of the test compound (1 × 10-4M and 1 × 10-5M) was added in 2 μl portions. To the control group, 2 μl of ethanol alone was added. These are treated at 37 ° C with 5% CO2Cultured underneath. After 45 hours of culture, the medium was replaced with an α-MEM medium containing 0.1% bovine serum albumin (BSA), 0.1 mM ascorbic acid, and 0.5 mM fumaric acid-β-aminopropionitrile, and the test compound ethanol again After culturing for 30 minutes after adding the same amount of solution or ethanol as before, 4 μCi [3[H] proline was added to each dish and allowed to be taken up into osteoblasts for 3 hours.
[0135]
The amount of synthesized collagen and the amount of non-collagen protein were measured by a method such as Perterkovsky [Biochemistry 10, 988-994 (1971)]. Table 3 shows the results.
[0136]
[Table 3]
[0137]
【The invention's effect】
Vitamin D of the present invention3The derivative is used as a drug such as an osteogenesis promoter, an immunosuppressant, a tumor cell growth inhibitor, and a hypercalcemic agent. The compounds represented by the formulas [2], [3], [4], [5], [6], and [7] are used as synthetic intermediates, and the method of the present invention uses3 Methods for synthesizing derivatives are provided.
Claims (12)
で表されるビタミンD3誘導体。The following formula [1]
Vitamin D 3 derivative represented by in.
で表されるラクトン化合物。The following formula [2]
A lactone compound represented by the formula:
で表されるラクトン化合物。The following formula [3]
A lactone compound represented by the formula:
で表されるヘプタン酸誘導体。The following equation [4]
A heptanoic acid derivative represented by the formula:
で表されるラクトン化合物。The following formula [5]
A lactone compound represented by the formula:
で表されるヘプタン酸誘導体。The following formula [6]
A heptanoic acid derivative represented by the formula:
で表されるラクトン化合物の製造法。The following equation [8]
A method for producing a lactone compound represented by the formula:
で表される化合物とをパラジウム触媒の存在下に反応させることを特徴とする上記式[1]で表されるビタミンD3誘導体の製造法。A lactone compound represented by the above formula [2];
Preparation of vitamin D 3 derivative represented by the above formula [1] to the compound represented by which comprises reacting in the presence of a palladium catalyst.
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