3,4-di-O-acetyl-2-O-benzyl-α-L-fucopyranosyl trichloroacetimidate 、
thexyldimethylsilyl 6-O-tert-butyldiphenylsilyl-3,4-O-isopropylidene-β-D-galactopyranosyl-(1->3)-2-azido-4,6-O-benzylidene-2-deoxy-β-D-glucopyranoside 在
三氟甲磺酸三甲基硅酯 作用下,
以
二氯甲烷 为溶剂,
反应 1.0h,
以66%的产率得到thexyldimethylsilyl 3,4-di-O-acetyl-2-O-benzyl-α-L-fucopyranosyl-(1->2)-6-O-tert-butyldiphenylsilyl-3,4-O-isopropylidene-β-D-galactopyranosyl-(1->3)-2-azido-4,6-O-benzylidene-2-deoxy-β-D-glucopyranoside