methyl 2-azido-4,6-O-benzylidene-2-deoxy-β-D-galactopyranoside 、 3,4,6-tri-O-acetyl-2-deoxy-2-phthalimido-β-D-glucopyranosyl-O-trichloroacetimidate 在
三氟甲磺酸三甲基硅酯 作用下,
以84%的产率得到methyl O-(3',4',6'-tri-O-acetyl-2'-deoxy-2'-phthalimido-β-D-glucopyranosyl)-(1'->3)-2-azido-4,6-O-benzylidene-2-deoxy-β-D-galactopyranoside