Abstract
Klebsiella Type 47 capsular polysaccharide has side chains attached to the main chain via D-glucuronic acid residues. The side chains have been removed to yield an essentially linear polysaccharide by the following sequence of reactions: ( 1) substitution of hydroxyl and car☐yl groups with methyl vinyl ether; ( 2) β-elimination by treatment with base; ( 3) removal of modified uronic acid residues and protecting groups by mild acid hydrolysis. The possibility of modifying other uronic acid-containing polysaccharides by this method is discussed.
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