methyl-(6-O-benzyl-2,3,4-tri-O-methyl-α-D-glucopyranosyl)-(1→4)-[methyl-(2-O-acetyl-3-O-methyl-β-D-glucopyranosyl)uronate]-(1→4)-(2,3-di-O-benzyl-6-deoxy-6-C-ethoxysulfonylmethyl-α-D-glucopyranosyl)-(1→4)-[methyl-(2-O-acetyl-3-O-methyl-α-L-idopyranosyl)-uronate]-(1→4)-2,3-di-O-benzyl-6-deoxy-6-C-methoxysulfonylmethyl-α-D-glucopyranoside 在
sodium methylate 、
溶剂黄146 作用下,
以
甲醇 为溶剂,
反应 6.0h,
以83%的产率得到methyl-(6-O-benzyl-2,3,4-tri-O-methyl-α-D-glucopyranosyl)-(1→4)-[methyl-(3-O-methyl-β-D-glucopyranosyl)uronate]-(1→4)-(2,3-di-O-benzyl-6-deoxy-6-C-ethoxysulfonylmethyl-α-D-glucopyranosyl)-(1→4)-[methyl-(3-O-methyl-α-L-idopyranosyl)uronate]-(1→4)-2,3-di-O-benzyl-6-deoxy-6-C-methoxysulfonylmethyl-α-D-glucopyranoside