(3S,5R,6R,8S,9S,10R,13R,14S,17R)-17-((R)-1,5-Dimethyl-hexyl)-3,6-difluoro-10,13-dimethyl-hexadecahydro-cyclopenta[a]phenanthren-5-ol 在
硫酸 作用下,
以
乙酸酐 、
溶剂黄146 为溶剂,
生成 (3S,5R,6R,8S,13R,14S,17R)-17-((R)-1,5-Dimethyl-hexyl)-3,6-difluoro-5,13-dimethyl-2,3,4,5,6,7,8,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthrene