Separation and identification of flavonoids from fistular onion stalk (Allium fisturosum L. var. Caespitosum Makio)
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The chemical constituents of fistular onion stalk obtained by supercritical CO2 extraction were separated and purified by silica gel and sephadex LH-20 gel column chromatography and the preparative TLC method and four flavonoids were obtained. On the basis of the spectral data, they were structurally identified as (+)-catechin, (-)-epicatechin, astragalin, and 3-O-߭D(2-O-߭D-glucopyranosyl)-glucopyranosides of kaempferol.
Huazhong University of Science and Technology. Journal (Medical Sciences)
Organic Chemistry not elsewhere classified