2-(benzyloxycarbonylamino)ethyl O-(3,4,6-tri-O-acetyl-2-deoxy-2-trichloroacetamido-β-D-galactopyranosyl)-(1->4)-(methyl 2,3-di-O-benzoyl-β-D-glucopyranosyluronate)-(1->3)-4-O-benzoyl-6-O-chloroacetyl-2-deoxy-2-trichloroacetamido-β-D-galactopyranoside 在
吡啶 、
硫脲 作用下,
以
乙醇 为溶剂,
反应 2.0h,
以86%的产率得到2-(benzyloxycarbonylamino)ethyl O-(3,4,6-tri-O-acetyl-2-deoxy-2-trichloroacetamido-β-D-galactopyranosyl)-(1->4)-(methyl 2,3-di-O-benzoyl-β-D-glucopyranosyluronate)-(1->3)-4-O-benzoyl-2-deoxy-2-trichloroacetamido-β-D-galactopyranoside