- 作者: 李水盛 ; 王正樞 ; 陳瓊雪
- 作者服務機構: 台灣大學藥學系
- 中文摘要: 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, (+)- dihydroquercetin, (+)-dihydrokaempferol, quercetin-3-O-.beta.-glucoside, 2-hydroxynaringenin, rutin, and quercetin 3-O-(2/sup G/-.beta.-D-xylopyranosylrutinoside) (13); four catechins-(-)-gallocatechin, (-)-epigallocatechin , (-)- catechin, and (-)-epicatechin; and two phenolic carboxylic acids-p-hydroxybenzoic acid and protocatechuic acid from the water soluble fraction of the ethanolic extract. NMR data of 13 were assigned by 2D NMR techniques.
- 英文摘要: --
- 中文關鍵字: Jujuba; Flavonoid; Nmr Analysis; Centrifugal Partition Chromatography (Cpc)
- 英文關鍵字: 酸棗;黃酮素;核磁共振分析;離心分配層析法