Antioxidant Benzoylated Flavan-3-ol Glycoside from Celastrus orbiculatus
- 2 December 2000
- journal article
- research article
- Published by American Chemical Society (ACS) in Journal of Natural Products
- Vol. 64 (1) , 82-84
- https://doi.org/10.1021/np000251l
Abstract
A new flavan-3-ol glycoside, (−)-epicatechin-5-O-β-d-glucosyl-3-benzoate (1), and two known compounds, (−)-epicatechin and (−)-epiafzelechin, were isolated from an EtOAc extract of Celastrus orbiculatus aerial parts that exhibited significant antioxidant effect in a 1,1-diphenyl-2-picrylhydrazyl (DPPH) free radical assay. The structure of 1 was elucidated by spectroscopic analyses, and compound 1 and its aglycon, (−)-epicatechin-3-benzoate (2), were found to be moderately active as antioxidants in the DPPH assay.Keywords
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