2,2-Dimethyl-propionic acid (3S,5S,6S,8S,9S,10R,13S,14S,17S)-3-acetoxy-6-bromo-5-hydroxy-10,13-dimethyl-hexadecahydro-cyclopenta[a]phenanthren-17-yl ester 在
氢氧化钾 作用下,
以
甲醇 为溶剂,
生成 2,2-Dimethyl-propionic acid (3S,5S,6S,8S,9S,10R,13S,14S,17S)-6-bromo-3,5-dihydroxy-10,13-dimethyl-hexadecahydro-cyclopenta[a]phenanthren-17-yl ester