3',6'-bis(diethylamino)-2-(prop-2-yn-1-yl)spiro[isoindoline-1,9'-xanthen]-3-one 、
6-O-(2-azido)acetyl-2,3,4-tri-O-benzyl-β-D-glucopyranosyl-(1->6)-1,2:3,4-di-O-isopropylidene-α-D-galactopyranose 在
copper(ll) sulfate pentahydrate 、
sodium ascorbate 作用下,
以
二氯甲烷 为溶剂,
以99%的产率得到2,3,4-tri-O-benzyl-6-O-[2-(4-{[3',6'-bis(diethylamino)-3-oxospiro(isoindoline-1,9'-xanthene)-2-yl]methyl}-1H-1,2,3-triazol-1-yl)]acetyl-β-D-glucopyranosyl-(1->6)-1,2:3,4-di-O-isopropylidene-α-D-galactopyranose