methyl (2S,4S,5R,6R)-5-acetamido-4-acetyloxy-2-[5-hydroxy-6-[4-(5-hydroxy-7-methoxy-4-oxochromen-2-yl)phenoxy]-2-(4-methoxyphenyl)-4-oxochromen-7-yl]oxy-6-[(1S,2R)-1,2,3-triacetyloxypropyl]oxane-2-carboxylate 在
sodium methylate 、
水 作用下,
以
甲醇 为溶剂,
反应 23.0h,
以21%的产率得到(2S,4S,5R,6R)-4-hydroxy-5-(1-hydroxyethylideneamino)-2-[5-hydroxy-6-[4-(5-hydroxy-7-methoxy-4-oxochromen-2-yl)phenoxy]-2-(4-methoxyphenyl)-4-oxochromen-7-yl]oxy-6-[(1R,2R)-1,2,3-trihydroxypropyl]oxane-2-carboxylic acid