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A New Hydrolyzable Tannin from Balanophora harlandii with Radical‐Scavenging Activity
Author(s) -
Wang Wei,
Zeng ShuFen,
Yang ChongRen,
Zhang YingJun
Publication year - 2009
Publication title -
helvetica chimica acta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.74
H-Index - 82
eISSN - 1522-2675
pISSN - 0018-019X
DOI - 10.1002/hlca.200900036
Subject(s) - chemistry , hydrolyzable tannin , tannin , rhizome , scavenging , dpph , condensed tannin , organic chemistry , stereochemistry , polyphenol , antioxidant , traditional medicine , food science , proanthocyanidin , medicine
One new hydrolyzable tannin, 1‐ O ‐[( E )‐ p ‐coumaroyl]‐3‐ O ‐galloyl‐ β ‐ D ‐glucopyranose ( 1 ), was isolated from the rhizome of Balanophora harlandii , together with 18 known phenolic compounds. Their structures were determined by detailed spectroscopic analysis. Of the known compounds, 3‐ O ‐caffeoyl‐ D ‐glucopyranose ( 6 ) was obtained as a natural product for the first time, and compounds 2 – 6 and 8 – 19 were identified for the first time from this plant. The radical‐scavenging activity of the isolated compounds was tested by a DPPH assay.
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