orientin and kaempferol

To investigate the chemical constituents from Angelica keiskei.. The constituents were isolated and purified by silica gel, Sephadex LH-20 column chromatography, and preparative TLC. Their structures were identified on the basis of spectral data and physiochemical characteristics.. 14 compounds were isolated from 70% ethanol extracts and identified as falcarindiol (1), selinidin (2), isobavachalcone (3), pteryxin (4), kaempferol-5-O-(6"-O-acetyl)-β-D-glucopyranoside (5), β-amyrin ace- tate (6), β-sitosteryl glucoside-6'-O-heptadecoicate (7), 2,5-dimethyl-6,8-dihydroxyl-chromone (8), quercetin-3,3'-di-O-α-L-rhamno- side (9), 2-hydroxynaringenin-4'-O-glucopyranoside (10), 3-O-α-L-rhamnosyl (1-->3)-β-D-glucopyranosyl (1-->3)-α-L-rhamnosyl (1--> 2)-α-L-arabinopyranosyl hederagenin-28-O-β-D-glucopyranosyl (1-->6)-β-D-glucopyranosyl ester (11), chrysoeriol (12), orientin (13) and 1β,6α-dihydroxyeudesm-4 (15)-ene (14).. All compounds are isolated from this plant for the first time.

Topics: Angelica; Flavonoids; Glucosides; Kaempferols; Oleanolic Acid; Phytochemicals; Quercetin

The phytochemical investigation of Rumex luminiastrum Jaub & Spach leaves, stems, flowers and roots revealed the presence of chrysophanol, physcion, emodin, chrysophanin, rheochrysin, and emodin-8-o-glucoside. In addition, kaempferol-7-o-rhamnoglucoside, quercimeritrin and orientin were isolated and identified.

Topics: Anthraquinones; Emodin; Flavonoids; Glucosides; Kaempferols; Medicine, Traditional; Plants, Medicinal; Quercetin; Yemen