乙酸酐 、
((2S,3S,4R,5S,6R)-2-Ethoxy-4,5-dihydroxy-6-hydroxymethyl-tetrahydro-pyran-3-yl)-((2R,3R,4S,5R)-3,4,5-trihydroxy-tetrahydro-pyran-2-yl)-methanone 在
三氟化硼 作用下,
反应 2.0h,
生成 Acetic acid (2R,3S,4R,5R,6S)-3-acetoxy-2-acetoxymethyl-6-ethoxy-5-((2R,3R,4S,5R)-3,4,5-triacetoxy-tetrahydro-pyran-2-carbonyl)-tetrahydro-pyran-4-yl ester