Benzoic acid (2R,4aS,4bS,6aS,6bR,9aS,10aS,10bR,12aR)-4a,6a,6b,8,8-pentamethyl-hexadecahydro-7,9-dioxa-pentaleno[2,1-a]phenanthren-2-yl ester 在
盐酸 作用下,
以
甲醇 、
丙酮 为溶剂,
生成
Benzoic acid (3R,5R,8R,9S,10S,13S,14S,16S,17R)-16,17-dihydroxy-10,13,17-trimethyl-hexadecahydro-cyclopenta[a]phenanthren-3-yl ester