Chemical constituents of flavonoid glycosides in extract from Ginkgo biloba leaves used for injection / 中草药
Chinese Traditional and Herbal Drugs
;
(24): 2027-2034, 2013.
Article
in Chinese
| WPRIM
| ID: wpr-855193
ABSTRACT
Objective:
To study the chemical constituents of flavonoid glycosides in the extract from Ginkgo biloba leaves used for injection.Methods:
The constituents of flavonoid glycosides in the 70% ethanol extract from G. biloba leaves were isolated and purified by chromatography over silica gel, MCI, ODS, Sephadex LH-20 columns and RP-HPLC. The structures were identified on the basis of physicochemical properties and spectral data analyses.Results:
Sixteen compounds were isolated and identified as 5, 7-dihydroxyl-4'-methoxylflavonol-3-O-rutinoside (1), quercetin-3-O-(2″, 6″-α-L-dirhamnopyranosyl)-β-D-glucoside (2), quercetin- 3-O-[2″-(6‴-p-coumaroyl)-β-D-glucopyranosyl] -α-L-rhamnopyranosyl-7-O-β-D-glucoside (3), isorhamnetin-3-O-(2″, 6″-α-L-dirhamnopyranosyl)-β-D-glucoside (4), rutin (5), luteolin-7-O-β-D-glucoside (6), quercetin-3-O-β-D-glucoside (7), quercetin- 3-O-(2″-β-D-glucopyranosyl)-α-L-rhamnoside (8), kaempferol-3-O-rutinoside (9), quercetin-3-O-α-L-rhamnoside (10), isorhamnetin-3-O-rutinoside (11), apigenin-7-O-β-D-glucoside (12), syringetin-3-O-rutinoside (13), kaempferol-3-O-(2″- β-D-glucopyranosyl)-α-L-rhamnoside (14), quercetin-3-O-α-L-rhamnopyranosyl-2″- (6‴-p-coumaroyl)-β-D-glucoside (15), and kaempferol-3-O-α-L-rhamnopyranosyl-2″- (6‴-p-coumaroyl)-β-D-glucoside (16).Conclusion:
UPLC-PDA shows that all the compounds are flavonoid glycosides in the leaves of G. biloba and are marked in the extract and injection. Compound 1 is isolated from this plant for the first time, named flavonol glycoside K.
Full text:
Available
Index:
WPRIM (Western Pacific)
Language:
Chinese
Journal:
Chinese Traditional and Herbal Drugs
Year:
2013
Type:
Article
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