Acetic acid (2S,6R)-6-((3S,5S,8R,9S,10S,13R,14S,17R)-3-hydroxy-10,13-dimethyl-hexadecahydro-cyclopenta[a]phenanthren-17-yl)-2-methyl-heptyl ester 在
chromium(VI) oxide 、
硫酸 作用下,
生成
Acetic acid (2S,6R)-6-((5S,8R,9S,10S,13R,14S,17R)-10,13-dimethyl-3-oxo-hexadecahydro-cyclopenta[a]phenanthren-17-yl)-2-methyl-heptyl ester