发明授权
US4977147A 17-methylene- and 17-ethylidene-estratrienes 失效
17-亚甲基和17-亚乙基 - 雌三烯

17-methylene- and 17-ethylidene-estratrienes
摘要:
A pharmaceutical preparation for treating menopausal symptoms, estrogen deficiency and hormone-dependent tumors, and for use as a contraceptive, comprises a compound of formula I ##STR1## wherein R.sub.1 is hydrogen, methyl, a tetrahydropyranyl group or an acyl group andR.sub.2 is hydrogen or methyl.
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