Benzoic acid (3S,5R,8S,9S,10R,13S,14S,17S)-17-((R)-1-hydroxy-1,5-dimethyl-hexyl)-4,4,8,10,14-pentamethyl-hexadecahydro-cyclopenta[a]phenanthren-3-yl ester 在
三氟化硼 作用下,
以
二氯甲烷 为溶剂,
反应 0.05h,
以90%的产率得到Benzoic acid (3S,5R,8R,10S,13S,14S,17R)-17-((S)-1,5-dimethyl-hexyl)-4,4,8,10,14-pentamethyl-2,3,4,5,6,7,8,10,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-3-yl ester