申请人:——
公开号:US20020143199A1
公开(公告)日:2002-10-03
A method of producing 3-alkoxy-1,3,5(10)-triene-6-one-steroid derivatives having, in the steroid skeleton thereof, a partial structure of A- and B-rings represented by formula (2):
1
(wherein R represents an alkyl group, a cycloalkyl group, an alkenyl group, or an aralkyl group), including reacting a 19-norsteroid derivative having, in the steroid skeleton thereof, a partial structure of A- and B-rings represented by formula (1):
2
with an alcohol represented by ROH (wherein R has the same meaning as defined above) and iodine in the absence of a rare earth compound catalyst. According to the method of the present invention, 3-alkoxy-1,3,5(10)-triene-6-one-steroids can be selectively produced from 19-norsteroides through a single reaction step without employment of a special catalyst.
本发明提供了一种制备3-烷氧基-1,3,5(10)-三烯-6-酮类甾体衍生物的方法,其中该甾体骨架具有由式(2)表示的A-和B-环的部分结构:1(其中R表示烷基、环烷基、烯基或芳基烷基)。该方法包括将具有由式(1)表示的A-和B-环的部分结构的19-去甲基甾体衍生物与ROH(其中R具有上述定义的相同含义)和碘在缺乏稀土化合物催化剂的情况下反应。根据本发明的方法,可以通过单一反应步骤从19-去甲基甾体中选择性地制备3-烷氧基-1,3,5(10)-三烯-6-酮类甾体,而无需使用特殊催化剂。