3-methoxy-2-pyridyl 2,3,4,6-tetra-O-benzyl-β-D-galactopyranoside 、
6-benzyloxycarbonylamino-1-hexanyl 4-O-acetyl-2,6-di-O-benzoyl-β-D-galactopyranoside 在
copper(II) bis(trifluoromethanesulfonate) 作用下,
以
甲苯 为溶剂,
反应 48.0h,
以51%的产率得到6-benzyloxycarbonylamino-1-hexanyl O-(2,3,4,6-tetra-O-benzyl-α-D-galactopyranosyl)-(1-3)-4-O-acetyl-2,6-di-O-benzoyl-β-D-galactopyranoside