乙酸酐 、 Acetic acid (3S,8S,9S,10R,13S,14S)-17-(6-acetylamino-1,5-dimethyl-2-oxo-hexyl)-10,13-dimethyl-16-oxo-2,3,4,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-3-yl ester 在
对甲苯磺酸 作用下,
反应 1.0h,
生成
<2-(γ-Methyl-δ-acetylaminobutyl)-3-methylfurano>-<5,4k>-3β-acetoxyandrost-5-ene