乙酸酐 、
3-hydroxypropyl 8-O-benzoyl-2,4-dideoxy-6,7-O-isopropylidene-4-trichloroacetamido-D-glycero-D-galacto-octonate 在
吡啶 作用下,
反应 2.0h,
以99%的产率得到3-acetoxypropyl 3,5-di-O-acetyl-8-O-benzoyl-2,4-dideoxy-6,7-O-isopropylidene-4-trichloroacetamido-D-glycero-D-galacto-octonate