(8S,9S,10R,13S,14S,17S)-17-tert-butyl 3-methyl 10,13-dimethyl-2-[4-(trifluoromethyl)benzyl]s-2,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-1Hcyclopenta[a]phenanthrene-3,17-dicarboxylate 在
三乙基硅烷 、
三氟乙酸 作用下,
以
二氯甲烷 为溶剂,
反应 3.0h,
生成 (2S,8S,9S,10R,13S,14S,17S)-3-(methoxycarbonyl)-10,13-dimethyl-2-[4-(trifluoromethyl)benzyl]-2,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthrene-17-carboxylic acid 、
(2R,8S,9S,10R,13S,14S,17S)-3-(methoxycarbonyl)-10,13-dimethyl-2-[4-(trifluoromethyl)benzyl]-2,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthrene-17-carboxylic acid