O-(2,3,4-tri-O-benzyl-α/β-L-fucopyranosyl) trichloroacetimidate 、
thexyldimethylsilyl O-(6-O-benzyl-3,4-O-isopropylidene-β-D-galactopyranosyl)-(1->4)-[(2,3,4-tri-O-benzyl-α-L-fucopyranosyl)-(1->3)]-2-azido-6-O-benzyl-2-deoxy-β-D-glucopyranoside 在
三氟甲磺酸三甲基硅酯 作用下,
以
乙醚 为溶剂,
以92%的产率得到thexyldimethylsilyl O-(2,3,4-tri-O-benzyl-α-L-fucopyranosyl)-(1->2)-(6-O-benzyl-3,4-O-isopropylidene-β-D-galactopyranosyl)-(1->4)-[(2,3,4-tri-O-benzyl-α-L-fucopyranosyl)-(1->3)]-2-azido-6-O-benzyl-2-deoxy-β-D-glucopyranoside