methyl [methyl O-(4,6-O-benzylidene-3-O-chloroacetyl-2-deoxy-2-trichloroacetamido-β-D-glucopyranosyl)-(1->4)-O-(methyl 2,3-di-O-benzoyl-β-D-glucopyranosyluronate)-(1->3)-O-(4,6-O-benzylidene-2-deoxy-2-trichloroacetamido-β-D-glucopyranosyl)-(1->4)-... 在
吡啶 、
硫脲 作用下,
以
乙醇 为溶剂,
反应 20.0h,
以95%的产率得到methyl [methyl O-(4,6-O-benzylidene-2-deoxy-2-trichloroacetamide-β-D-glucopyranosyl)-(1->4)-O-(methyl 2,3-di-O-benzoyl-β-D-glucopyranosyluronate)-(1->3)-O-(4,6-O-benzylidene-2-deoxy-2-trichloroacetamido-β-D-glucopyranosyl)-(1->4)-2,3-di-O-benzoyl-...