Chloro-acetic acid (R)-1-[(4aR,6aS,6bR,8aS,10S,12aS,12bS,14aS)-10-(tert-butyl-diphenyl-silanyloxy)-4,12a-dimethyl-14-oxo-4a,5,6,6a,6b,7,8,8a,9,10,11,12,12a,12b,13,14-hexadecahydro-2-oxa-indeno[1,7a-a]phenanthren-3-yl]-3-methyl-but-3-enyl ester 在
四丁基碘化铵 、 sodium hydride 、
碳酸氢钠 、
硫脲 作用下,
以
乙醇 、
N,N-二甲基甲酰胺 为溶剂,
反应 7.5h,
生成
(4aR,6aS,6bR,8aS,10S,12aS,12bS,14aS)-3-((R)-1-Benzyloxy-3-methyl-but-3-enyl)-10-(tert-butyl-diphenyl-silanyloxy)-4,12a-dimethyl-5,6,6a,6b,7,8,8a,9,10,11,12,12a,12b,13-tetradecahydro-4aH-2-oxa-indeno[1,7a-a]phenanthren-14-one