N-Acetyl-N-{1-[(8S,9S,10R,13S,14S)-10,13-dimethyl-3-oxo-3,6,7,8,9,10,11,12,13,14,15,16-dodecahydro-cyclopenta[a]phenanthren-(17Z)-ylidene]-ethyl}-acetamide 在
potassium hydrogencarbonate 作用下,
以
甲醇 为溶剂,
反应 1.5h,
生成
(Z)-20-(acetylamino)pregna-1,4,17(20)-trien-3-one 、 (E)-20-(acetylamino)pregna-1,4,17(20)-trien-3-one