| 发明名称 |
Phosphoric acid isomerization of A 5 (10), 9 (11)-diene steroid to the corresponding 4, 9-diene steroid |
| 摘要 |
The invention is a process for the preparation of a Delta<4,9>-steroid of formula (II)which comprises contacting a Delta<5(10),9(11)>-steroid of formula (I)with a phosphorous containing acid.
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| 申请公布号 |
US6797834(B2) |
申请公布日期 |
2004.09.28 |
| 申请号 |
US20020315273 |
申请日期 |
2002.12.10 |
| 申请人 |
PHARMACIA & UPJOHN COMPANY |
发明人 |
VAIDYANATHAN RAJAPPA |
| 分类号 |
C07J1/00;(IPC1-7):C07J1/00 |
主分类号 |
C07J1/00 |
| 代理机构 |
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