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[Chemical constituents of ethyl acetate extract from Polygonum perfoliatum].

Zhong yao cai = Zhongyaocai = Journal of Chinese medicinal materials (2012-12-21)
Huan-Bo Cheng, Xin-Qiao Liu, Ke-Li Chen
ABSTRACT

To study the chemical constituents of Polygonum perfoliatum. The chemical constituents of Polygonum perfoliatum were isolated and purified by chromatography on silica gel, Sephadex LH-20 and Semi-preparative HPLC. The structures of compounds were elucidated and identified by physicochemical properties, H-NMR, 13C-NMR and ESI-MS. Ten compounds were isolated and identified as 5-hydroxymethyl-2-furaldEhyde (1), methyl caffeoate (2), protocatechuic aldehyde (3), quercetin (4), pinocernbrin (5), catechin (6), taxifolin (7), taxifolin-3-O-beta-D-xylopyranoside (8), 13-epitorulosal (9), coumarin-7-O-beta-D-glucose glycosidic (10). [corrected] Compounds 6-9 are isolated from this plant for the first time.

MATERIALS
Product Number
Brand
Product Description

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Ethyl acetate, ACS reagent, ≥99.5%
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