2-azidoethyl 3,4,6-tri-O-benzoyl-β-D-galactopyranosyl-(1->4)-3-O-benzoyl-2-deoxy-2-phthalimido-β-D-glucopyranoside 、 2,3,6,2',3',4',6'-hepta-O-acetyl-α-D-lactosyl trichloroacetimidate 在
三氟甲磺酸三甲基硅酯 作用下,
以
二氯甲烷 为溶剂,
反应 3.0h,
以50%的产率得到2-azidoethyl 2,3,4,6-tetra-O-acetyl-β-D-galactopyranosyl-(1->4)-2,3,6-tri-O-acetyl-β-D-glucopyranosyl-(1->6)-[3,4,6-tri-O-benzoyl-β-D-galactopyranosyl-(1->4)]-3-O-benzoyl-2-deoxy-2-phthalimido-β-D-glucopyranoside