p-tolyl 2,3,4,6-tetra-O-acetyl-β-D-galactopyranosyl-(1→4)-6-O-benzyl-2-deoxy-2-phthalimido-1-thiol-β-D-glucopyranoside 、
p-methylphenyl 2,3,4-tri-O-benzyl-1-thio-β-L-fucopyranoside 在
N-碘代丁二酰亚胺 、
silver trifluoromethanesulfonate 作用下,
以
甲苯 为溶剂,
反应 3.0h,
以75%的产率得到p-tolyl 2,3,4,6-tetra-O-acetyl-β-D-galactopyranosyl(1→4)-[2,3,4-tri-O-benzyl-α-L-fucopyranosyl(1→3)]-6-O-benzyl-2-deoxy-2-phthalimido-1-thio-β-D-glucopyranoside