ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

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 M_n = 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)