Chemical Modification of Carbohydrates through Reaction with Organometallic Agents

概要

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Intimate, homogeneous modification of two polyhydroxylic polysaccharides derived from both of cotton (1) and dextran (2) has been studied through reaction with a wide variety of organometallic reactants. Cotton (1), a water insoluble, cellulosic polysaccharide, was treated with a variety of organotin halides in the presence of bis (ethylenediamine) copper(II) hydroxide as both solvent and added base using an interfacial condensation system. Dextran (2), a water soluble polysaccharide, was modified through condensation with both organotin and organotitanium halides employing sodium hydroxide and/or triethylamine as the added base. Analysis of both condensation products indicated the presence of tin or titanium in the crosslinked lattice of the polysaccharide. The product is a combination of a number of modified structure units linked to each other or to unmodified saccharide units. In addition, sucrose (3), which is a naturally occurring disaccharide, was successfully polymerized through reaction with a number of organotin dihalides employing the aqueous interfacial condensation technique to form crosslinked networks.
岡山理科大学の論文