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ISSN electronic edition: 1336-9075
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4-O-Methyl-D-glucurono-D-xylan from the leaves of the marsh mallow (Althaea-officinalis L. var Rhobusta)

A. Kardošová, P. Capek, and J. Rosík

Institute of Chemistry, Centre for Chemical Research, Slovak Academy of Sciences, CS-84238 Bratislava

 

Abstract: A water-soluble 4-0-methyl-D-glucurono-D-xylan of Mn = 21.563 has been isolated from the leaves of A. officinalis L., var. Rhobusta. On the basis of the results of methylation analysis and, 13C NMR spectral data it was concluded that the polysaccharide was built of (1 → 4)-linked β-D-xylopyra- nosyl residues,  ≈70 % being unsubstituted, ≈ 5 % carrying a single sub- stitution at 0-2 and/or 0-3, and ≈ 11 % being doubly branched at 0-2 and 0-3. 4-O-Methyl-D-glucuronic acid was attached to 0-2 as a single terminal unit (1 unit per 7 units of xylose).

Full paper in Portable Document Format: 435a705.pdf

 

Chemical Papers 43 (5) 705–713 (1989)

Tuesday, April 16, 2024

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