Process for the production of 3-deoxy-4-ene steroids
    1.
    发明授权
    Process for the production of 3-deoxy-4-ene steroids 失效
    生产3-脱氧-4-烯类甾体的方法

    公开(公告)号:US5140106A

    公开(公告)日:1992-08-18

    申请号:US646750

    申请日:1991-01-17

    CPC分类号: C07J11/00

    摘要: 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 andZ 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.

    摘要翻译: PCT No.PCT / DE90 / 00183 Sec。 371 1990年10月19日第 102(e)1990年10月19日PCT PCT 1990年3月8日PCT公布。 出版物WO90 / 11290 描述了制备通式I(I)的3-脱氧-4-烯类固醇的方法,其中R 1,R 2和R 3表示氢原子或甲基 R4表示低级烷基,苯基或游离的酯化或醚化的羟基,R5表示氢原子,乙烯基或者含有R6表示氢原子的基团-C3OND CR6,最大的烷基 4个碳原子或卤素原子,X表示亚甲基,氟亚甲基,亚乙基或亚乙烯基,Y和U表示亚甲基或亚乙基,Z表示亚甲基,亚乙基,亚乙基 亚乙烯基,氯亚甲基或羟基亚甲基,并且其中所述键表示三个单键或一个双键和两个单键或共轭双键。