5-[(8R,9S,10R,13R,14S,17R)-3-ethenoxyimino-14-hydroxy-10,13-dimethyl-2,6,7,8,9,11,12,15,16,17-decahydro-1H-cyclopenta[a]phenanthren-17-yl]pyran-2-one 在
samarium diiodide 、
叔丁醇 作用下,
反应 1.0h,
以25%的产率得到5-[(8R,9S,10R,13R,14S,17R)-3-amino-14-hydroxy-10,13-dimethyl-1,2,3,6,7,8,9,11,12,15,16,17-dodecahydrocyclopenta[a]phenanthren-17-yl]pyran-2-one