benzyl 2,4,6-tri-O-pivaloyl-β-D-galactopyranosyl-(1->4)-2,3,6-tri-O-pivaloyl-β-D-glucopyranoside 、 phenyl 2,3,4-tri-O-benzyl-1-thio-β-D-fucopyranoside 在
N-碘代丁二酰亚胺 、
三氟甲磺酸 作用下,
以
二氯甲烷 为溶剂,
以63%的产率得到benzyl 2,3,4-tri-O-benzyl-6-deoxy-α-D-galactopyranosyl-(1,3)-2,4,6-tri-O-pivaloyl-β-D-galactopyranosyl-(1,4)-2,3,6-tri-O-pivaloyl-β-D-glucopyranoside