乙酸酐 、 (2R,3S,4S,5R,6S)-2-((R)-2,3-Dihydroxy-propyl)-6-((S)-2,3-dihydroxy-propyl)-tetrahydro-pyran-3,4,5-triol 在
吡啶 作用下,
生成
Acetic acid (2R,3R,4R,5S,6S)-4,5-diacetoxy-6-((S)-2,3-diacetoxy-propyl)-2-((R)-2,3-diacetoxy-propyl)-tetrahydro-pyran-3-yl ester