11.beta.-Difluoromethyl and (E)- and (Z)-11-fluoromethylene steriods
申请人:The Upjohn Company
公开号:US04557867A1
公开(公告)日:1985-12-10
Known reactions are arranged in a novel manner to produce 11.beta.-difluoromethyl and (E)- and (Z)-11-fluoromethylene 19-norandrostenediones and 19-nor-13.beta.-ethylandrostenediones which are useful as contraceptive agents.
11β-Difluoromethyl and (E)- and (Z)-11-fluoromethylene 19-norandrostenediones and 19-nor-13β-ethylandrostene- diones which are useful as contraceptive agents.