benzyl 2,3,4-tri-O-benzoyl-α-D-mannopyranosyl-(1->3)-[2,3,4-tri-O-benzoyl-α-D-mannopyranosyl-(1->6)]-2,4-di-O-benzyl-β-D-mannopyranosyl-(1->4)-2-azido-3,6-di-O-benzyl-2-deoxy-β-D-glucopyranoside 、
2,3,4,6-tetra-O-benzoyl-β-D-galactopyranosyl-(1->4)-2,3,6-tri-O-benzoyl-α-D-glucopyranosyl trichloroacetimidate 在
三氟甲磺酸三甲基硅酯 作用下,
以
二氯甲烷 为溶剂,
以65%的产率得到benzyl 2,3,4,6-tetra-O-benzoyl-β-D-galactopyranosyl-(1->4)-2,3,6-tri-O-benzoyl-β-D-glucopyranosyl-(1->6)-2,3,4-tri-O-benzoyl-α-D-mannopyranosyl-(1->3)-[2,3,4,6-tetra-O-benzoyl-β-D-galactopyranosyl-(1->4)-2,3,6-tri-O-benzoyl-β-D-glucopyranosyl-(1->6)-2,3,4-tri-O-benzoyl-α-D-mannopyranosyl-(1->6)]-2,4-di-O-benzyl-β-D-mannopyranosyl-(1->4)-2-azido-3,6-di-O-benzyl-2-deoxy-β-D-glucopyranoside