、
乙酸酐 在
吡啶 、
4-二甲氨基吡啶 作用下,
反应 6.5h,
以209 mg的产率得到2-(trimethylsilyl)ethyl (methyl 4,7,8,9-tetra-O-acetyl-5-acetoxyacetamido-3,5-dideoxy-D-glycero-α-D-galacto-2-nonulopyranosylonate)-(2->4)-(methyl 5-acetamido-7,8,9-tri-O-acetyl-3,5-dideoxy-D-glycero-α-D-galacto-2-nonulopyranosylonate)-(2->6)-3,4-di-O-acetyl-2-O-benzoyl-β-D-glucopyranoside