6-azido-6-deoxy-1,2:3,4-di-O-isopropylidene-D-galactopyranose 、
3,7-anhydro-4,5,6,8-tetra-O-benzyl-1,1,2,2-tetradehydro-1,2-D-glycero-L-mannooctitol 在
copper(l) iodide 作用下,
以89%的产率得到6-deoxy-1,2:3,4-di-O-isopropylidene-6-[4-(2,3,4,6-tetra-O-benzyl-β-D-galactopyranosyl)-1H-1,2,3-triazol-1-yl]-α-D-galactopyranose