propargyl 2,3,4,6-tetra-O-acetyl-β-D-glucopyranosyl-(1->2)-4,6-O-benzylidene-β-D-glucopyranoside 、
p-methoxyphenyl 2,3,4-tri-O-acetyl-α-L-rhamnopyranosyl-(1->4)-6-O-acetyl-2,3-di-O-benzoyl-β-D-galactopyranosyl trichloroacetimidate 在
silica-gel-supported sulfuric acid 作用下,
以
二氯甲烷 为溶剂,
反应 0.75h,
以87%的产率得到propargyl 2,3,4-tri-O-acetyl-α-L-rhamnopyranosyl-(1->4)-6-O-acetyl-2,3-di-O-benzoyl-β-D-galactopyranosyl-(1->3)-4,6-O-benzylidene-2-O-(2,3,4,6-tetra-O-acetyl-β-D-glucopyranosyl)-β-glucopyranoside