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New Phenolic Constituents from Balanophora polyandra with Radical‐Scavenging Activity
Author(s) -
Wang KaiJin,
Zhang YingJun,
Yang ChongRen
Publication year - 2006
Publication title -
chemistry and biodiversity
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.427
H-Index - 70
eISSN - 1612-1880
pISSN - 1612-1872
DOI - 10.1002/cbdv.200690135
Subject(s) - chemistry , dpph , scavenging , radical , acetone , organic chemistry , antioxidant , phenols
The 80% acetone extract of Balanophora polyandra Griff . (Balanophoraceae) was found to exhibit high radical‐scavenging activity ( SC 50 =14.48 μg/ml) towards 1,1‐diphenyl‐2‐picrylhydrazyl (DPPH) radicals. Further chemical investigation led the isolation of two new hydrolysable tannins, balapolyphorins A ( 1 ) and B ( 2 ), together with 20 known phenolic compounds ( 3 – 22 ). Their structures were established by detailed spectroscopic analysis, and the radical‐scavenging properties of all isolated compounds were determined by DPPH assay.