发明名称 |
Process for the preparation of 6-halo-pregnanes |
摘要 |
The invention relates to a new process for the preparation of 6 alpha -halo-3-keto- DELTA 1,4-pregnadiene-derivatives in two-steps-synthesis affording directly 6 alpha -halo-derivatives by reacting 3-keto-9 beta ,11 beta -oxido- DELTA 1,4-pregnadiene-derivatives with a suitable acylating or etherifying agent to give the corresponding new 3-enol-derivatives which are finally halogenated by using a suitable halogenating agent.
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申请公布号 |
US4188322(A) |
申请公布日期 |
1980.02.12 |
申请号 |
US19780900886 |
申请日期 |
1978.04.28 |
申请人 |
BLASINACHIM SPA |
发明人 |
CASTELLI, PIER P;ROMANO, BRUNO |
分类号 |
C07J5/00;A61K31/573;C07J71/00;(IPC1-7):C07J71/00 |
主分类号 |
C07J5/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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