发明授权
US4705783A 9.alpha., 11.beta.-substituted and 11.beta.-substituted estranes 失效
9α,11β-取代和11β-取代的雌激素

9.alpha., 11.beta.-substituted and 11.beta.-substituted estranes
摘要:
9 alpha, 11 beta and 11 beta-substituted estranes are disclosed which exhibit elevated estrogenic and postcoital contraceptive activities. A process for their manufacture and their use in pharmaceuticals is also disclosed.
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