乙酸酐 、
(2R,3S,4S,5S,8S,9S,10R,13R,14S,17R)-17-((R)-1,5-Dimethyl-hexyl)-5-fluoro-3,4,10,13-tetramethyl-hexadecahydro-cyclopenta[a]phenanthren-2-ol 在
吡啶 作用下,
生成 Acetic acid (2R,3S,4S,5S,8S,9S,10R,13R,14S,17R)-17-((R)-1,5-dimethyl-hexyl)-5-fluoro-3,4,10,13-tetramethyl-hexadecahydro-cyclopenta[a]phenanthren-2-yl ester