乙酸酐 、
Benzoic acid (2R,3R,4S,5S,6R)-2-benzyloxy-5-hydroxy-6-hydroxymethyl-4-((2S,3R,4S,5S,6R)-3,4,5-triacetoxy-6-acetoxymethyl-tetrahydro-pyran-2-yloxy)-tetrahydro-pyran-3-yl ester 在
吡啶 作用下,
生成 Benzoic acid (2R,3R,4S,5R,6S)-5-acetoxy-2-benzyloxy-6-(2-oxo-propoxy)-4-((2S,3R,4S,5S,6R)-3,4,5-triacetoxy-6-acetoxymethyl-tetrahydro-pyran-2-yloxy)-tetrahydro-pyran-3-yl ester