Trifluoro-acetic acid (3S,9S,10R,13S,14S,17S)-3-acetoxy-10,13,17-trimethyl-7-oxo-2,3,4,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-17-yl ester 在
盐酸 作用下,
以
溶剂黄146 为溶剂,
生成
Trifluoro-acetic acid (8R,9S,10R,13S,14S,17S)-10,13,17-trimethyl-7-oxo-2,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthren-17-yl ester