Title
Antioxidant Benzoylated Flavan-3-ol Glycoside from Celastrusorbiculatus
Author
Bang Yeon Hwang, Hang Sub Kim, Jeong Hyeong Lee, Young Soo Hong, Jai Seup Ro, Kyong Soon Lee, Jung Joon Lee
Year
2001
Journal
Journal of Natural Products
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 ofCelastrus 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.
Full Article
Instrument
J-720
Keywords
Circular dichroism, Absolute configuration, Natural products