乙酸酐 、
2-(trimethylsilyl)ethyl 2,3,6-tri-O-benzoyl-4-O-<2,3-di-O-benzoyl-4-O-(3-deoxy-α-D-xylo-hexopyranosyl)-β-D-galactopyranosyl>-β-D-glucopyranoside 在
吡啶 作用下,
以92%的产率得到2-(trimethylsilyl)ethyl 4-O-<6-O-acetyl-2,3-di-O-benzoyl-4-O-(2,4,6-tri-O-acetyl-3-deoxy-α-D-xylo-hexopyranosyl)-β-D-galactopyranosyl>-2,3,6-tri-O-benzoyl-β-D-glucopyranoside