发明授权
US4057543A Process for the preparation of
17.beta.-hydroxy-3-oxo-17.alpha.-pregn-4-ene-21-carboxylic acid
.gamma.-lactone
失效
制备17 {62-羟基-3-氧代-17 {60-孕-4-烯-21-羧酸{65-内酯
- 专利标题: Process for the preparation of 17.beta.-hydroxy-3-oxo-17.alpha.-pregn-4-ene-21-carboxylic acid .gamma.-lactone
- 专利标题(中): 制备17 {62-羟基-3-氧代-17 {60-孕-4-烯-21-羧酸{65-内酯
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申请号: US701463申请日: 1976-07-01
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公开(公告)号: US4057543A公开(公告)日: 1977-11-08
- 发明人: Hugh L. Dryden, Jr. , Charles S. Markos
- 申请人: Hugh L. Dryden, Jr. , Charles S. Markos
- 申请人地址: IL Chicago
- 专利权人: G. D. Searle & Co.
- 当前专利权人: G. D. Searle & Co.
- 当前专利权人地址: IL Chicago
- 主分类号: C07J1/00
- IPC分类号: C07J1/00 ; C07J13/00 ; C07J21/00 ; C07J41/00 ; C07J71/00
摘要:
A new process utilizing certain novel intermediates for the preparation of 17.beta.-hydroxy-3-oxo-17.alpha.-pregn-4-ene-21-carboxylic acid .gamma.-lactone is described herein. The procedure utilizes readily available and inexpensive sarsasaponin as starting material.
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