Chemical Constituents from Berchemia formosana
Journal
Journal of the Chinese Chemical Society
Journal Volume
42
Journal Issue
1
Pages
101-105
Date Issued
1995
Author(s)
Abstract
Abstract Centrifugal partition chromatography, Sephadex LH?20 and flash chromatography were applied to separate flavonoids and coumarins from Berchemia formosana . This first chemical investigation led to the isolation of ten compounds. Based on spectral analysis, they were determined to be quercetin ( 1 ), rutin ( 2 ), (+)?dihydroquercetin ( 3 ), (+)?dihydrokaempferol ( 4 ), naringenin ( 5 ), 2?hydroxy?naringenin ( 6 ), 2?hydroxy?naringenin?7? O ?�]?glucoside ( 7 ), (?)?catechin ( 8 ), (?)?gallocatechin ( 9 ) and scopoletin ( 10 ). Among these 7 is a novel natural product and was found to be composed of two inseparable diastereoisomers. The presence of the rare 2?hydroxyflavanones 6 and 7 in B. formosana is of interest for chemotaxonomy.
Type
note