乙酸酐 、
(2S,3S,4S,5R,6S)-3-((2R,3S,4R,5R,6R)-6-Benzyloxymethyl-3,4,5-trimethoxy-tetrahydro-pyran-2-ylmethyl)-4,5,6-trimethoxy-tetrahydro-pyran-2-carboxylic acid benzyl ester 在
硫酸 作用下,
以
溶剂黄146 为溶剂,
反应 1.0h,
生成 (2S,3S,4S,5R,6R)-6-Acetoxy-3-((2R,3S,4R,5R,6R)-6-acetoxymethyl-3,4,5-trimethoxy-tetrahydro-pyran-2-ylmethyl)-4,5-dimethoxy-tetrahydro-pyran-2-carboxylic acid benzyl ester 、 (2S,3S,4S,5R,6S)-6-Acetoxy-3-((2R,3S,4R,5R,6R)-6-acetoxymethyl-3,4,5-trimethoxy-tetrahydro-pyran-2-ylmethyl)-4,5-dimethoxy-tetrahydro-pyran-2-carboxylic acid benzyl ester