methyl 3-O-benzyl-4,6-O-benzylidene-β-D-glucopyranosyl-(1->3)-4,6-O-benzylidene-α-D-glucopyranoside 、
2,3,4,6-tetra-O-benzoylglucosyl bromide 在
2,4,6-三甲基吡啶 、
silver trifluoromethanesulfonate 作用下,
以
二氯甲烷 为溶剂,
以84%的产率得到methyl [2,3,4,6-tetra-O-benzoyl-β-D-glucopyranosyl-(1->2)]-3-O-benzyl-4,6-O-benzylidene-β-D-glucopyranosyl-(1->3)-[2,3,4,6-tetra-O-benzoyl-β-D-glucopyranosyl-(1->2)]-4,6-O-benzylidene-α-D-glucopyranoside