(5S,8R,9S,10S,13S,14S,17S)-17-Hydroxy-10,13,17-trimethyl-2-[1-piperidin-1-yl-meth-(E)-ylidene]-hexadecahydro-cyclopenta[a]phenanthren-3-one 在
1,8-二氮杂双环[5.4.0]十一碳-7-烯 、
三乙胺 作用下,
以
苯 为溶剂,
反应 2.0h,
生成
(5α,17β)-5'-chloro-4'-(piperidino)-17-(dichloroacetyloxy)-17-methyl-6'-H-androst-2-eno<3,2-b>pyran-6'-one