4-甲基氨基哌啶 、 (3S,5R,8R,9S,10S,13R,14S,17R)-14-hydroxy-10,13-dimethyl-17-(2-oxo-2H-pyran-5-yl)hexadecahydro-1H-cyclopenta[a]phenanthren-3-yl 4-nitrophenyl carbonate 在
三乙胺 作用下,
以
二氯甲烷 为溶剂,
反应 2.0h,
以44 mg的产率得到[(3S,5R,8R,9S,10S,13R,14S,17R)-14-hydroxy-10,13-dimethyl-17-(6-oxopyran-3-yl)-1,2,3,4,5,6,7,8,9,11,12,15,16,17-tetradecahydrocyclopenta[a]phenanthren-3-yl] 4-(methylamino)piperidine-1-carboxylate