FLAVONOIDS AND OTHER SUBSTANCES FROM Lippia sidoides AND THEIR ANTIOXIDANT ACTIVITIES

被引：26

作者：

de Almeida, Macia Cleane S. ^{[1
]}

Alves, Leonardo A. ^{[1
]}

Souza, Luciana Gregorio da S. ^{[1
]}

Machado, Luciana L. ^{[1
]}

de Matos, Marcos C. ^{[1
]}

de Oliveira, Maria Conceicao F. ^{[1
]}

Lemos, Telma L. G. ^{[1
]}

Braz Filho, Raimundo ^{[2
]}

机构：

[1] Univ Fed Ceara, Dept Quim Organ & Inorgan, BR-60021970 Fortaleza, Ceara, Brazil

[2] Univ Fed Rural Rio de Janeiro, Univ Estadual Norte Fluminense, Fundacao Amparo Pesquisa Estado Rio de Janeiro, BR-28013603 Campos Dos Goytacazes, RJ, Brazil

来源：

QUIMICA NOVA | 2010年 / 33卷 / 09期

关键词：

Lippia; Verbenaceae; chalcones; C-13; NMR-SPECTRA; ESSENTIAL OIL; CHEMICAL-COMPOSITION; CHAM; H-1;

D O I：

10.1590/S0100-40422010000900011

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

FLAVONOIDS AND OTHER SUBSTANCES FROM Lippia sidoides AND THEIR ANTIOXIDANT ACTIVITIES. The chemical investigation of the ethanol extracts of stems, roots and leaves of Lippia sidoides led to the isolation of: steroid beta-sitosterol, naphthoquinone tecomaquinone, monoterpene carvacrol, flavonoid 4',5,7-trihydroxyflavanone (naringenin), 3',4',5,7-tetrahydroxyflavanone and 4',5,7-trihydroxy-6-methoxyflavone flavonoids mixture, and 3,4,4',6'-tetrahydroxydihydrochalcone-2'-O-beta-D-glucopyranoside and 4,4',6'-trihydroxydihydrochalcone-2'-O-beta-D-glucopyranoside dihydrochalcones mixture. Their structures were characterized on the basis of spectral data, mainly H-1 and C-13 NMR (1D and 2D) and mass spectra. The ethanol extract and isolated compounds were evaluated for their antioxidative properties using the method of inhibition of free radical DPPH (2,2-diphenyl-1-picrylhydrazyl).

引用

页码：1877 / 1881

页数：5

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