The water-soluble polysaccharides of the seeds of eight species of Gleditsia have been isolated and studied. They are galactomannans with different viscosities, specific rotations, and ratios of galactose and mannose. A study of their chemical transformations and IR spectral data has shown that the monosaccharide residues are pyranoses linked by β-1-4-glycosidic bonds having in the second component D-galactose with the α-configuration of the glycosidic center and the most probable chair conformation of the pyranose ring.
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