2009•Academic Journal of Second Military Medical UniversityRequires access

Study on chemical constituents of Polygonum capitatum Buch.-Ham. ex D. Don(I)

Yang Yang, Fei Cai, Qi Yang, Yingbo Yang, Lianna Sun, Wansheng Chen

Abstract

Objective:To study the chemical constituents of Polygonum capitatum.Methods:Isolation and purification of the chemical constituents were carried out repeatedly by silica gel column and Sephadex gel column chromatography.The structures of compounds were identified by physical-chemical methods and spectral data.Results:Fourteen compounds were identified from the petroleum ether fraction of P.capitatum:tricosanol(Ⅰ),pentacosanol(Ⅱ),docosanoic acid(Ⅲ),lignoceric acid(Ⅳ),hexadecanoic-2,3-dihydroxy-propyleste(Ⅴ),docosanoic-2,3-dihydroxypropyleste(Ⅵ),oleanolic acid(Ⅶ),ursolic acid(Ⅷ),octacosa-1,27-diene(Ⅸ),docosyl ferulate(Ⅹ),β-sitosterol(Ⅺ),tricosane(Ⅻ),hexadecanoic acid(),and linoleic acid().Conclusion:Compounds Ⅰ-Ⅹ are obtained from P.capitatum for the first time.Compounds Ⅸ and Ⅹare obtained from Polygonum for the first time.

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Key concepts: Chemistry, Oleanolic acid, Polygonum, Ursolic acid, Column chromatography, Chromatography, Silica gel, Sephadex