Chemical Constltuents from the Roots of Zizyphus jujuba Mill. var. spinosa (I)
Journal
Journal of the Chinese Chemical Society
Journal Volume
42
Journal Issue
1
Pages
77-82
Date Issued
1995
Author(s)
Abstract
Abstract The chemical constituents of the roots of Zizyphus jujuba Mill. var. spinosa were investigated with a combination of Sephadex LH‐20 column, centrifugal partition chromatography and RP‐18 low pressure liquid chromatography. We isolated seven flavonoids‐quercetin ( 1 ), (+)‐dihydroquercetin ( 2 ), (+)‐dihydrokaempferol ( 7 ), quercetin‐3‐0‐β‐glucoside ( 8 ), 2‐hydroxynaringenin ( 11 ), rutin ( 12 ), and quercetin 3‐0‐(2 G ‐β‐D‐xylopyranosylrutinoside) ( 13 ); four catechins‐(‐)‐gallocatechin ( 3 ), (‐)‐epigallocatechin ( 4 ), (‐)‐catechin ( 5 ), and (‐)‐epicatechin ( 6 ); and two phenolic carboxylic acids‐p‐hydroxybenzoic acid ( 9 ) and protocatechuic acid ( 10 ) from the water soluble fraction of the ethanolic extract NMR date of 13 were assigned by 2D NMR techniques.
SDGs
Type
journal article