Antioxidant quinonemethide triterpenes from Salacia campestris

被引：37

作者：

Carvalho, PRF ^{[1
]}

Silva, DHS ^{[1
]}

Bolzani, VS ^{[1
]}

Furlan, M ^{[1
]}

机构：

[1] Univ Estadual Paulista, Inst Quim, BR-14801900 Araraquara, SP, Brazil

来源：

CHEMISTRY & BIODIVERSITY | 2005年 / 2卷 / 03期

关键词：

D O I：

10.1002/cbdv.200590016

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

A new quinonemethide triterpene named as salacin, has been isolated from the root bark of Salacia campestris in addition to the known pristimerin, maytenin, 20 alpha-hydroxymaytenin, and netzahualcoyene. Salacin was identified on the basis of NMR-spectral and mass spectrometric analysis. The free-radical scavenging activities of the quinonemethide triterpenes salacin (1), pristimerin (2), maytenin (3), 20a-hydroxymaytenin (4), and netzahualcoyene (5) towards DPPH have been evaluated and showed absorbance variation (AA) of 19, 20, 39, 28, 55, and 10%, respectively, having rutin (74% at 50 pm) and BHT (7% at 50 mu M) as standard compounds.

引用

页码：367 / 372

页数：6

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