Abstract
A heteropolysaccharide isolated from the gum (Katira) of Cochlospermum religiosum was found to consist of d-galactose, d-galacturonic acid and l-rhamnose in a molar ratio 2:1:3. Structural assignment of the polysaccharide was carried out using total acid hydrolysis, methylation analysis, periodate oxidation, Smith degradation and NMR studies ( 1H, 13C, DQF-COSY, TOCSY, NOESY, HMBC and HSQC) and the repeating unit of the polysaccharide was established as [Display omitted]
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