Acetic acid (3R,5S,8R,9S,10S,13S,14S,17S)-3-acetoxy-16-[1-(4-methoxy-phenyl)-meth-(Z)-ylidene]-2-[1-(4-methoxy-phenyl)-meth-(E)-ylidene]-10,13-dimethyl-hexadecahydro-cyclopenta[a]phenanthren-17-yl ester 在
臭氧 作用下,
生成
3β,17β-Diacetoxy-5α-androstan-2,16-dion