ABSTRACT
Objective: To study the chemical constituents of Bidens parviflora. Methods: The ethyl acetate fraction of 80% ethanol extract from B. parviflora was isolated and purified by silica, polyamide, Sephadex LH-20, and HPLC, then the structures of obtained compounds were identified by physicochemical properties and spectral data. Results: Ten compounds were isolated and identified as Z-6-O-(4″-O-acetyl-6″-O-p-coumaroyl-β-D-glucopyranosyl)-6,7,3’,4’-tetrahydroxyaurone (1), okanin-4’-O-β-D-(6″-O- acetyl)-glucoside (2), Z-6-O-(4″,6″-diacetyl-β-D-)-7,3’,4’-tetrahydroxy aurone (3), 6,7,3’,4’-tetrahydroxy aurone (4), isookanin (5), syringic acid-4-O-α-L-rhamnopyranoside (6), okanin-4’-O-β-D-(6″-trans-p-coumaroyl)-glucoside (7), okanin-4’-O-β-D-(4″-acetyl- 6″-trans-p-coumaroyl)-glucoside (8), quercetin-3,4’-dimethyl ether-7-O-rutinoside (9), and cordifolioidyne B (10). Conclusion: Compound 1 is a new compound named as bidenoside I, compounds 6 and 10 are isolated from the genus Bidens for the first time, other compounds are isolated from this plant for the first time.
ABSTRACT
Objective: To study the chemical constituents from the roots of Sambucus williamsii. Methods: Silica gel, ODS, and preparative HPLC were used to isolate the compounds. Their chemical structures were elucidated on the basis of spectral data. Results: Eighteen compounds were isolated, and they were identified as 7α-O-ethylmorroniside (1), 7β-O-ethylmorroniside (2), dehydromorroniside (3), loganin (4), 7-dehydrologanin (5), 7-formyloysecologanin (6), sweroside (7), coniferyl alcohol 9-O-β-D-glucopyranoside (8), 3-methoxy-4-(2-glycerol)-phenylpropanol (9), (7R, 8R)-7, 8-dihydro-9'-hydroxyl-3'-methoxyl-8- hydroxymethyl-7-(4-hydroxyl-3-methoxyphenyl)- 1'-benzofuranpropanol-9'-O-β-D-glucopyranoside (10), (7R, 8R)-4, 7, 9, 9'- tetrahydroxy-3-methoxy-8-O-4'- neoligan-3'-O-β-D-glucopyranoside (threo) (11), (7R, 8R)-3-methoxy-8, 4'-oxyneoligna-3', 4, 7, 9, 9'- pentol (threo) (12), 5-(1'-hydroxyethyl)-methyl nicotinate (13), 3-(hydroxyacetyl) indole (14), 4'-hydroxy-N-(4-hydroxy-3- methoxybenzoyl)-3', 5'-dimethoxybenzamide (15), 3-methoxyl-1H-pyrrole (16), (1S, 3S)-1-methyl-1, 2, 3, 4-tetrahydro-β-carboline-3- carboxylic acid (17), and syringic acid-4-O-α-L-rhamnopyranoside (18). Conclusion: Compounds 8-10 and 13-17 are firstly isolated from the plants in Caprofoliaceae, and furthermore, compounds 1-4, 6, 11, and 18 are isolated from the plants of Sambucus L. for the first time.