p-methoxyphenyl 3,4-O-isopropylidene-α-L-fucopyranosyl-(1→2)-3,4,6-tri-O-benzyl-β-D-glucopyranosyl-(1→3)-4,6-O-benzylidene-2-deoxy-2-phthalimido-β-D-glucopyranoside 、
p-tolyl 2-O-acetyl-3,4,6-tri-O-benzyl-1-thio-α-D-mannopyranoside 在
N-碘代丁二酰亚胺 、 silica gel supported sulfuric acid 作用下,
以
二氯甲烷 为溶剂,
反应 0.75h,
以84%的产率得到p-methoxyphenyl 2-O-acetyl-3,4,6-tri-O-benzyl-α-D-mannopyranosyl-(1→2)-3,4-O-isopropylidene-α-L-fucopyranosyl-(1→2)-3,4,6-tri-O-benzyl-β-D-glucopyranosyl-(1→3)-4,6-O-benzylidene-2-deoxy-2-phthalimido-β-D-glucopyranoside