乙酸酐 、
(1R,2R,4R,5R)-4,5,7,14-tetrahydroxy-12-methoxy-4-methyl-2-phenyl-1,4,5,6-tetrahydro-2H-1,5-methanoanthra[2,3-d]oxocine-8,13-dione 以
吡啶 为溶剂,
反应 18.0h,
以51%的产率得到(1R,2R,4S,5R)-4,5,14-trihydroxy-12-methoxy-4-methyl-8,13-dioxo-2-phenyl-1,4,5,6,8,13-hexahydro-2H-1,5-methanoanthra[2,3-d]oxocin-7-yl acetate