3,4-di-O-acetyl-2-O-benzyl-α-L-fucopyranosyl trichloroacetimidate 、
thexyldimethylsilyl 2,3,4,6-tetra-O-acetyl-β-D-galactopyranosyl-(1->4)-6-O-acetyl-2-azido-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 0.5h,
以90%的产率得到thexyldimethylsilyl 2,3,4,6-tetra-O-acetyl-β-D-galactopyranosyl-(1->4)-[3,4-di-O-acetyl-2-O-benzyl-α-L-fucopyranosyl-(1->3)]-6-O-acetyl-2-azido-2-deoxy-β-D-glucopyranoside