发明授权
US4868166A 2,2:6,6-diethylen-3-oxo-17alpha-pregn-4-ene-21,17alpha-carbolactones, process for their production & pharmaceutical preparations containing them 失效
2,2,6,6-二乙基-3-氧代-17α-孕-4-烯-21,17α-卡宾内酯,其制备方法和含有它们的药物制剂

2,2:6,6-diethylen-3-oxo-17alpha-pregn-4-ene-21,17alpha-carbolactones,
process for their production & pharmaceutical preparations containing
them
摘要:
2,2;6,6-diethylene-3-oxo-17alpha-pregn-4-ene-21,17-carbolactones of general formula I, ##STR1## wherein R.sub.1 represents a hydrogen atom or a methyl group,R.sub.2 represents a methyl or ethyl group and ##STR2## process for their production and their pharmaceutical use.
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