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Preparative Separation of Phenolic Compounds from Halimodendron halodendron by High-Speed Counter-Current Chromatography

By Zhu Yu, Jianguo Han, Ligang Zhou, Qi Wang, Jianglin Zhao, Haifeng Gao, Jihua Wang and Fuyu Yang

Abstract

Three phenolic compounds, p-hydroxybenzoic acid (1), isorhamnetin-3-O-β-D-rutinoside (2), and 3,3'-di-O-methylquercetin (5), along with a phenolic mixture were successfully separated from the ethyl acetate crude extract of Halimodendron halodendron by high-speed counter-current chromatography (HSCCC) with chloroform-methanol-water-acetic acid (4:3:2:0.05, v/v) as the two-phase solvent system. The phenolic mixture from HSCCC was further separated by preparative HPLC and purified by Sephadex LH-20 to afford quercetin (3) and 3-O-methylquercetin (4). Seven hundred mg of ethyl acetate crude extract was separated by HSCCC to obtain six fractions which were then analyzed by high performance liquid chromatography (HPLC). The HSCCC separation obtained total of 80 mg of the mixture of quercetin (3) and 3-O-methylquercetin (4) (26.43% and 71.89%, respectively) in fraction 2, 14 mg of 3,3'-di-O-methylquercetin (5) at 95.14% of purity in fraction 3, 15 mg of p-hydroxybenzoic acid (1) at 92.83% of purity in fraction 5, 12 mg of isorhamnetin-3-O-β-D-rutinoside (2) at 97.99% of purity in fraction 6. This is the first time these phenolic compounds have been obtained from H. halodendron, and their chemical structures identified by means of physicochemical and spectrometric analysis

Topics: preparative separation, phenolic compounds, Halimodendron halodendron, high-speed counter-current chromatography, Organic chemistry, QD241-441, Chemistry, QD1-999, Science, Q, DOAJ:Organic Chemistry, DOAJ:Chemistry
Publisher: MDPI AG
Year: 2010
DOI identifier: 10.3390/molecules15095998
OAI identifier: oai:doaj.org/article:234b4c4bceb347b18185d1e6496962db
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