Antibacterial phenolic components from Eriocaulon buergerianum

Phytochemistry
Jing-Jing FangWei-Min Zhao

Abstract

Five phenolic components, 1,3,6-trihydroxy-2,5,7-trimethoxyxanthone (1), 7,3'-dihydroxy-5,4',5'-trimethoxyisoflavone (2), toralactone-9-O-beta-D-glucopyranoside (3), patuletin-3-O-[2-O-E-feruloyl-beta-d-glucopyranosyl-(1-->6)-beta-d-glucopyranoside] (4), patuletin-3-O-[beta-d-glucopyranosyl-(1-->3)-2-O-E-caffeoyl-beta-D-glucopyranosyl-(1-->6)-beta-D-glucopyranoside] (5), along with 19 known compounds were isolated from Eriocaulon buergerianum (Eriocaulaceae). Their structures were determined by spectroscopic and chemical methods. All 24 isolated compounds were tested against the pathogenic bacteria Staphylococcus aureus (ATCC 25923); as a result, 10 compounds were found to exhibit antibacterial activity with MICs ranging from 32 to 256 microg/ml.

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Citations

Aug 17, 2011·Natural Product Reports·Nigel C Veitch, Renée J Grayer
Apr 9, 2013·Food Chemistry·Qiaolin XuXiaoyi Wei
Dec 23, 2014·Natural Product Reports·Christopher D Donner
Feb 7, 2017·Organic & Biomolecular Chemistry·Bighnanshu K JenaDebendra K Mohapatra
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Oct 11, 2017·Journal of Food and Drug Analysis·I-Jung LeeYun-Lian Lin
Jul 1, 2017·Comprehensive Reviews in Food Science and Food Safety·Eliane de Oliveira Silva, Ronan Batista

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