Novel Approaches to Glycopolymer Syntheses from the Viewpoint of Polymerization Chemistry

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Abstract
The new approaches to glycopolymer syntheses are introduced from the viewpoint of classification into the general polymerization reactions, i.e., polyaddition, polycondensation, and radical polymerization. The ring-opening polyaddition of sugar oxazoline monomers having the hydroxy group gave stereoregular aminopolysaccharides. Hydroxy-terminated oligodihexanoylchitin was prepared and its block copolyaddition with the other hydroxy terminated polymer or oligomer was carried out using diisocyanate as a coupling reagent. The direct polycondensation of d-glucosamine derivatives using the appropriate condensing agents proceeded at a primary hydroxy group of position 6 regioselectively. Furthermore, spontaneous polycondensation of aminosaccharide monomers gave new aminopolysaccharides having unique structures. Radical alternating copolymerization of 1,2-dideoxysaccharide with maleic anhydride took place using AIBN initiator.

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