p-Methoxyphenyl 4,6-O-benzylidene-2-deoxy-2-phthalimido-β-D-glucopyranoside 、
3,4,6-tri-O-benzyl-2-O-acetyl-α-D-glucosyl trichloroimidate 在
silica gel supported sulfuric acid 作用下,
以
二氯甲烷 为溶剂,
反应 0.75h,
以91%的产率得到p-methoxyphenyl 2-O-acetyl-3,4,6-tri-O-benzyl-β-D-glucopyranosyl-(1→3)-4,6-O-benzylidene-2-deoxy-2-phthalimido-β-D-glucopyranoside