2-naphthylmethyl O-(methyl 2-O-benzoyl-3-O-chloroacetyl-4-O-levulinoyl-β-D-glucopyranosyluronate)-(1->3)-6-O-benzoyl-2-deoxy-2-trichloroacetamido-β-D-galactopyranoside 、
氯乙酸酐 在
吡啶 作用下,
以
二氯甲烷 为溶剂,
反应 1.0h,
以92%的产率得到2-naphthylmethyl O-(methyl 2-O-benzoyl-3-O-chloroacetyl-4-O-levulinoyl-β-D-glucopyranosyluronate)-(1->3)-6-O-benzoyl-4-O-chloroacetyl-2-deoxy-2-trichloroacetamido-β-D-galactopyranoside