乙酸酐 、 Benzoic acid (5R,6S,8S,9S,10R,13R,14S,17R)-17-((R)-1,5-dimethyl-hexyl)-5-hydroxy-10,13-dimethyl-4,5,6,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-6-yl ester 生成
Benzoic acid (2S,3R,5R,6S,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