2,3,4,6-tetra-O-benzyl-β-D-galactopyranosyl-(1->4)-3,6-di-O-benzyl-2-deoxy-2-trichloroacetamido-D-glucopyranosyl fluoride 、
phenyl 3,4,6-tri-O-benzyl-1-thio-α-D-mannopyranoside 在
二氯二茂锆 、 silver perchlorate 作用下,
以
二氯甲烷 为溶剂,
反应 3.5h,
以85%的产率得到thiophenyl 2,3,4,6-tetra-O-benzyl-β-D-galactopyranosyl-(1->4)-3,6-di-O-benzyl-2-deoxy-2-trichloroacetamido-β-D-glucopyranosyl-(1->2)-3,4,6-tri-O-benzyl-1-thio-α-D-mannopyranoside