2-(trimethylsilyl)ethyl 3-O-benzyl-β-D-galactopyranoside 、
methyl (phenyl 5-acetoxyacetamido-4,7,8,9-tetra-O-acetyl-3,5-dideoxy-2-thio-D-glycero-D-galacto-2-nonulopyranoside)onate 在
N-碘代丁二酰亚胺 、
三氟甲磺酸 作用下,
以
乙腈 为溶剂,
反应 12.0h,
以67%的产率得到2-(trimethylsilyl)ethyl (methyl 5-acetoxyacetamido-4,7,8,9-tetra-O-acetyl-3,5-dideoxy-D-glycero-α-D-galacto-2-nonulopyranosylonate)-(2->6)-(3-O-benzyl-β-D-galactopyranoside