去氢表雄酮 、 4-(dimethylamino)-2-fluoro-6-methyltetrahydro-2H-pyran-3-yl acetate 、
trifluoroborane diethyl ether 、
甲醇 以
乙酸乙酯 为溶剂,
以to obtain (2S,3R,4S,6R)-2-((3S,8R,9S,10R,13S,14S)-10,13-dimethyl-17-oxo-2,3,4,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[α]phenanthren-3-yloxy)-4-(dimethylamino)-6-methyltetrahydro-2H-pyran-3-yl acetate (19 mg, 38%) as a white solid after column chromatography (1:19 methanol:ethyl acetate)的产率得到(2S,3R,4S,6R)-2-((3S,8R,9S,10R,13S,14S)-10,13-dimethyl-17-oxo-2,3,4,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[α]phenanthren-3-yloxy)-4-(dimethylamino)-6-methyltetrahydro-2H-pyran-3-yl acetate