在
对甲苯磺酸 作用下,
以
四氢呋喃 、
甲醇 为溶剂,
反应 1.0h,
生成 (2S,8S,9S,10R,13S,14S,17S)-methyl 17-(4-hydroxybenzoyl)-10,13-dimethyl-2-[4-(trifluoromethyl)benzyl]-2,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthrene-3-carboxylate 、
(2R,8S,9S,10R,13S,14S,17S)-methyl 17-(4-hydroxybenzoyl)-10,13-dimethyl-2-[4-(trifluoromethyl)benzyl]-2,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthrene-3-carboxylate