葳岩仙皂苷 A 以
甲醇 、
溶剂黄146 为溶剂,
反应 15.0h,
以90%的产率得到(3S,4R,4aR,6aR,6bS,8aS,12aR,12bS,14aR,14bS)-4-(hydroxymethyl)-4,6a,6b,11,11,14b-hexamethyl-3-(((2S,3R,4S,5S)-3,4,5-trihydroxytetrahydro-2H-pyran-2-yl)oxy)-2,3,4,4a,5,6,6a,6b,7,8,10,11,12,12a,14a,14b-hexadecahydro-1H,9H-12b,8a-(epoxymethano)picen-16-one