乙酸酐 、
Acetic acid 2-((2R,5R,6R,8S,9S,10R,11R,13S,14S,16R,17R)-2-bromo-6-fluoro-5,17-dihydroxy-11-methanesulfonyloxy-10,13,16-trimethyl-3-oxo-hexadecahydro-cyclopenta[a]phenanthren-17-yl)-2-oxo-ethyl ester 在
高氯酸 作用下,
以
乙酸乙酯 为溶剂,
生成 Acetic acid (2R,5R,6R,8S,9S,10R,11R,13S,14S,16R,17R)-5-acetoxy-17-(2-acetoxy-acetyl)-2-bromo-6-fluoro-11-methanesulfonyloxy-10,13,16-trimethyl-3-oxo-hexadecahydro-cyclopenta[a]phenanthren-17-yl ester