Synthesis of heparin partial structures and their binding activities to platelets

Article abstract of DOI:10.1016/S0960-894X(99)00550-8

A synthetic pentasaccharide corresponding to the antithrombin III-binding region in heparin was also found to bind to human platelets. To identify the platelet-binding site in the pentasaccharide which is expected to be a novel sequence in heparin responsible for its platelet-binding, five partial structures of this particular pentasaccharide were synthesized. In a competitive assay using [³H]-heparin, a trisaccharide, O-(2-deoxy-2-sulfamido-3,6-di-O-sulfo-α-D-glucopyranosyl)- (1→4)-O-(2-O-sulfo-α-L-idopyranosyluronic acid)-(1→4)-2-deoxy-2-sulfamido-6-O-sulfo-α-D-glucopyranose, was concluded to be a high-affinity site for heparin's binding to platelets.