、
乙酸酐 在
吡啶 、
4-二甲氨基吡啶 作用下,
反应 17.0h,
以15.4 mg的产率得到3,4,6-tri-O-acetyl-2-acetamido-2-deoxy-α-D-galactopyranosyl-(1-5)-[methyl O-[methyl (7,8-di-O-benzoyl-4,5-O-isopropylidene-3-deoxy-α-D-manno-2-octulopyranosyl)onate]]-(2-4)-(allyl 7,8-di-O-benzoyl-3-deoxy-α-D-manno-2-octulopyranosyl)onate