Antioxidant flavonoids and phenolic acids from leaves of Leea guineense G.!Don (Leeaceae)

被引：36

作者：

de Beck, PO

Cartier, G

David, B

Dijoux-Franca, MG

Mariotte, AM

机构：

[1] UJF, CNRS, Lab Pharmacognosie,Fac Pharmaciede Grenoble, Dept Pharmacochim Mol,UMR 5063, F-38706 La Tronche, France

[2] Bur Espace, Inst Rech Pierre Fabre, Ctr Rech Substances Nat, Ramonville St Agne, France

来源：

PHYTOTHERAPY RESEARCH | 2003年 / 17卷 / 04期

关键词：

Leea guineense G. Don; Leeaceae; flavonoids; sulphated flavonols; phenolic acids; antioxidant;

D O I：

10.1002/ptr.1141

中图分类号：

R914 [药物化学];

学科分类号：

100701 [药物化学];

摘要：

From leaves of Leea guineense (Leeaceae) three hydrophilic flavonoids were isolated and identified as quercetin-3'-sulphate-3-O-alpha-L-rhamnopyranoside, quercetin-3,3'-disulphate and a new flavonoid sulphate, quercetin-3,3',4'-trisulphate, together with kaempferol, quercetin, quercitrin, mearnsitrin, gallic acid and ethyl gallate. The structures were established by spectroscopic analysis (UV, MS,H-1-NMR, C-13-NMR and 2D-NMR). Their antioxidant effect on free radical scavenging was evaluated in the DPPH assay. Copyright (C) 2003 John Wiley Sons, Ltd.

引用

页码：345 / 347

页数：3

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