申请人:Schering Aktiengesellschaft
公开号:US05140106A1
公开(公告)日:1992-08-18
A process for the production of 3-deoxy-4-ene steroids of the general formula I ##STR1## is described, in which R.sub.1, R.sub.2 and R.sub.3 mean a hydrogen atom or a methyl group, R.sub.4 represents a lower alkyl group, a phenyl group or a free, esterified or etherified hydroxy group, R.sub.5 symbolizes a hydrogen atom, a vinyl group or the grouping --C.tbd.CR.sub.6 with R.sub.6 meaning a hydrogen atom, an alkyl group with a maximum of 4 carbon atoms or a halogen atom, X represents a methylene group, a fluoromethylene group, an ethylidene group or a vinylidene group, Y and U represent a methylene group or an ethylidene group and Z symbolizes a methylene group, an ethylidene group, a vinylidene group, a chloromethylene group or a hydroxymethylene group and in which the bonds represent three single bonds or one double bond and two single bonds or a conjugated double bond.
描述了一种生产一般式I的3-去氧-4-烯类类固醇的方法,其中R.sub.1、R.sub.2和R.sub.3表示氢原子或甲基基团,R.sub.4代表较低的烷基基团、苯基团或自由、酯化或醚化的羟基团,R.sub.5表示氢原子、乙烯基团或基团--C.tbd.CR.sub.6,其中R.sub.6表示氢原子、最多含有4个碳原子的烷基基团或卤素原子,X表示亚甲基基团、氟代亚甲基基团、乙烯基团或乙烯基团,Y和U表示亚甲基基团或乙烯基团,Z表示亚甲基基团、乙烯基团、乙烯基团、氯代亚甲基基团或羟甲基基团,其中键代表三个单键或一个双键和两个单键或一个共轭双键。