(2S,3S,4S,5R,6S)-4,5-Diacetoxy-6-[(2S,3R,4S,5R)-4,5-diacetoxy-2-(4-nitro-phenoxy)-tetrahydro-pyran-3-yloxy]-3-methoxy-tetrahydro-pyran-2-carboxylic acid methyl ester 在
sodium methylate 作用下,
以
甲醇 为溶剂,
反应 2.0h,
以89%的产率得到(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