(2S,3S,4S,5R,6R)-4,5-Diacetoxy-6-((2R,3R,4S,5R)-4,5-diacetoxy-2-chloro-tetrahydro-pyran-3-yloxy)-3-methoxy-tetrahydro-pyran-2-carboxylic acid methyl ester 在
sodium hydroxide 、
sodium methylate 、
四丁基硫酸氢铵 作用下,
以
甲醇 、
二氯甲烷 为溶剂,
反应 22.0h,
生成 (2S,3S,4R,5R,6S)-6-[(2S,3R,4S,5R)-4,5-Dihydroxy-2-(4-nitro-phenoxy)-tetrahydro-pyran-3-yloxy]-4,5-dihydroxy-3-methoxy-tetrahydro-pyran-2-carboxylic acid methyl ester