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A novel acylated quercetin tetraglycoside from oolong tea (Camelia sinensis) extracts |
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| Authors: | Rie Mihara Yuko Fukui Nahoko Yamaji |
| Institution: | a Faculty of Bioresources, Mie University, 1515 Kamihama, Tsu, Mie 514-8507, Japan b Suntory Institute for Health Care Science, 1-1-1 Wakayamadai, Shimamoto, Mishima, Osaka 618-8503, Japan c Suntory Institute for Bioorganic Research, 1-1-1 Wakayamadai, Shimamoto, Mishima, Osaka 618-8503, Japan |
| Abstract: | A novel acylated quercetin tetraglycoside, namely quercetin 3-O-(2G-p-coumaroyl-3G-O-β-l-arabinosyl-3R-O-β-d-glucosylrutinoside) was isolated from oolong tea (Camelia sinensis) extracts. Structural analysis of this compound was achieved by NMR, TOF-MS and high-resolution FAB-MS. Triglycosyl flavonols have previously been reported from tea leaves and tea seeds however this is the first report of an aromatic acylated and tetraglycosyl flavonol. |
| Keywords: | Oolong tea Camelia sinensis Flavonol glycoside |
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