Benzoic acid (2S,3R,5R,6R,8S,9S,10R,13R,14S,17R)-2,3-diacetoxy-17-((R)-1,5-dimethyl-hexyl)-5-hydroxy-10,13-dimethyl-hexadecahydro-cyclopenta[a]phenanthren-6-yl ester 在
吡啶 、
氯化亚砜 作用下,
生成 Benzoic acid (2S,3R,6R,8S,9S,10R,13R,14S,17R)-2,3-diacetoxy-17-((R)-1,5-dimethyl-hexyl)-10,13-dimethyl-2,3,6,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-6-yl ester