Process for 17alpha-acetoxy-6alpha-methylpregn-4-en-20

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专利权人:

PHYTOGEN PRODUCTS INC.

发明人:

V. SOLLINS,IRVING,LOEKEN,BJARTE

申请号：

DE19691901236

公开号：

DE1901236(A1)

申请日:

1969.01.11

申请国别(地区):

德国

年份:

1970

代理人:

摘要：

A process for preparing 17alpha-hydroxy-6alpha-methylpregn- 4-en-20-one by dehydration of 5alpha,17alpha-dihydroxy-20-ethylenedio xy-6beta-methylpregnan-3-o- ne to give 17alpha-hydroxy-20-ethylenedio xy-6alpha-methylpregn-4-en-3-one and then reducing the 3-keto group and hydrolysing the ketal to give the required compound. - Economic process for prep. of oral contraceptive agent.

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