申请人:Schering Aktiengesellschaft
公开号:US04202991A1
公开(公告)日:1980-05-13
Bicycloalkane derivatives of the formula ##STR1## wherein n is 1 or 2, R.sub.1 is lower alkyl, Acyl is alkanoyl, and Y is --S--R.sub.2, --SO.sub.m --R.sub.2, or ##STR2## wherein m is 1 or 2, R.sub.2 is alkyl, R.sub.3 is hydrogen or lower alkyl, R.sub.4 is acyl or phenyl optionally substituted with lower alkoxy, benzyloxy or alkanoyloxy; and Z is nitro, lower alkoxycarbonyl, lower alkanoyl, lower alkylsulfinyl, or lower alkylsulfonyl are useful intermediates in the total synthesis of steroids. The compounds are prepared by reacting a corresponding compound lacking the CH.sub.2 Y substituent with formaldehyde and a mercaptan or sulfinic acid, followed if desired by oxidation and optional salt condensation.
Bicycloalkane衍生物的化学式为##STR1##其中n为1或2,R.sub.1为低碳烷基,Acyl为烷酰基,Y为--S--R.sub.2,--SO.sub.m --R.sub.2或##STR2##其中m为1或2,R.sub.2为烷基,R.sub.3为氢或低碳烷基,R.sub.4为酰基或苯基,可选择地取代为低烷氧基、苄氧基或烷酰氧基;Z为硝基、低烷氧羰基、低烷酰基、低烷基亚砜基或低烷基砜基的化合物,在类固醇的全合成中是有用的中间体。这些化合物是通过将相应缺少CH.sub.2 Y取代基的化合物与甲醛和巯基或亚砜酸反应制备的,随后如有需要,进行氧化和可选的盐类缩合。