1-acetamido-1-deoxy-4-O-(2-O-allyl-3,6-di-O-benzoyl-β-D-galactopyranosyl)-2,3,6-tri-O-benzoyl-β-D-glucopyranose 、
(2R,3S,4S,5R,6R)-3,4,5-Tris-benzyloxy-2-benzyloxymethyl-6-chloro-tetrahydro-pyran 在
2,4,6-三甲基吡啶 、
silver trifluoromethanesulfonate 作用下,
以
甲苯 为溶剂,
反应 1.0h,
以72%的产率得到1-acetamido-1-deoxy-4-O-[2-O-allyl-3,6-di-O-benzoyl-4-O-(2,3,4,6-tetra-O-benzyl-α-D-galactopyranosyl)-β-D-galactopyranosyl]-2,3,6-tri-O-benzoyl-β-D-glucopyranose