发明授权
US5384419A Preparation process for 20-keto-21(S) hydroxy steroid compounds and
intermediates
失效
20-酮-21(S)羟基类固醇化合物和中间体的制备方法
- 专利标题: Preparation process for 20-keto-21(S) hydroxy steroid compounds and intermediates
- 专利标题(中): 20-酮-21(S)羟基类固醇化合物和中间体的制备方法
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申请号: US71199申请日: 1993-06-02
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公开(公告)号: US5384419A公开(公告)日: 1995-01-24
- 发明人: Jean Buendia , Jean-Yves Godard , Philippe Mackiewicz , Christian Richard
- 申请人: Jean Buendia , Jean-Yves Godard , Philippe Mackiewicz , Christian Richard
- 申请人地址: FRX
- 专利权人: Roussel-Uclaf
- 当前专利权人: Roussel-Uclaf
- 当前专利权人地址: FRX
- 优先权: FRX9209077 19920723
- 主分类号: C07J9/00
- IPC分类号: C07J9/00 ; C07J31/00 ; C07J75/00 ; C12P41/00 ; C07J5/00
摘要:
An improved process for the preparation of 20-keto-21(S)-hydroxy steroids of the Formula ##STR1## wherein R.sub.1 is alkyl of 1 to 3 carbon atoms, R.sub.2 is alkyl of 1 to 12 carbon atoms, and R.sub.3 is alkyl of 1 to 4 carbon atoms and novel intermediates therefrom.
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