allyl (3,4,6-tri-O-acetyl-2-deoxy-2-trichloroacetamido-β-D-glucopyranosyl)-(1->2)-[2,3,4,6-tetra-O-benzyl-α-D-glucopyranosyl-(1->3)]-(4-O-benzyl-α-L-rhamnopyranosyl)-(1->2)-(3,4-di-O-benzyl-α-L-rhamnopyranosyl)-(1->3)-2-O-acetyl-4-O-benzyl-α-L-rhamnopyranoside 在
sodium methylate 作用下,
以
甲醇 为溶剂,
反应 0.42h,
以56%的产率得到allyl (2-deoxy-2-trichloroacetamido-β-D-glucopyranosyl)-(1→2)-[2,3,4,6-tetra-O-benzyl-α-D-glucopyranosyl-(1→3)]-(4-O-benzyl-α-L-rhamnopyranosyl)-(1→2)-(3,4-di-O-benzyl-α-L-rhamnopyranosyl)-(1→3)-2-O-acetyl-4-O-benzyl-α-L-rhamnopyranoside