phenyl 2,3,4,6-tetra-O-benzoyl-β-D-galactopyranosyl-(1->6)-2,4-di-O-benzoyl-3-O-chloroacetyl-β-D-galactopyranosyl-(1->6)-2,3,4-tri-O-benzoyl-1-thio-β-D-galactopyranoside 在
硫脲 作用下,
以
吡啶 、
乙醇 为溶剂,
反应 1.0h,
以83.7%的产率得到phenyl 2,3,4,6-tetra-O-benzoyl-β-D-galactopyranosyl-(1->6)-2,4-di-O-benzoyl-β-D-galactopyranosyl-(1->6)-2,3,4-tri-O-benzoyl-1-thio-β-D-galactopyranoside