Summary
By fractionating the initial water-soluble polysaccharide from the tuberous roots ofEremurus altaicus, a homogeneous naturally acetylated glucomannan with a molecular weight of 108,000–120,000 has been isolated.
On the basis of the results of periodate oxidation and methylation and a study of the products of partial cleavage of the glycosidic bonds, the structure of a repeating heptasaccharide section of the chain consisting of β-1→4-linked D-glucopyranose (2 moles) and D-mannopyranose (5 moles) residues has been established. The glucomannan apparently contains 95–100 such sections. It has been shown that in each repeating solution there is one O-acetyl group at a C3 atom of a glucose residue.
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Additional information
Institute of the Chemistry of Plant Substances, Academy of Sciences of the Uzbek SSR, Tashkent. Translated from Khimiya Prirodnykh Soedinenii, No. 2, pp. 189–195, March–April, 1977.
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Igamberdieva, M.I., Rakhimov, D.A. & Ismailov, Z.F. The structure of the glucomannan from the tuberous roots of Eremurus altaicus. Chem Nat Compd 13, 162–167 (1977). https://doi.org/10.1007/BF00563937
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DOI: https://doi.org/10.1007/BF00563937