title: Separation and identification of flavonoids from fistular onion stalk (Allium fisturosum L. var. Caespitosum Makio).
abstract: The chemical constituents of fistular onion stalk obtained by supercritical CO(2) 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-beta-D(2-O-beta-D-glucopyranosyl)-glucopyranosides of kaempferol.
authors.affiliation: Department of Pharmacognosy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China. fuqinqin2004@163.com
authors.forename: Qinqin
authors.initials: Q
authors.lastname: Fu
authors.forename: Jingyou
authors.initials: J
authors.lastname: Liu
authors.forename: Changgong
authors.initials: C
authors.lastname: Zhang
authors.forename: Yinbo
authors.initials: Y
authors.lastname: Zhou
authors.forename: Geng
authors.initials: G
authors.lastname: Zhang
authors.forename: Dan
authors.initials: D
authors.lastname: Ma
authors.forename: Xinzhou
authors.initials: X
authors.lastname: Yang
mesh_terms: D000490:Allium / Q000737:chemistry*; D002392:Catechin / Q000302:isolation & purification; D002850:Chromatography, Gel / Q000379:methods; D005419:Flavonoids / Q000302:isolation & purification*; D044949:Kaempferols / Q000302:isolation & purification
chemical_list: D005419:Flavonoids; D044949:Kaempferols; D002392:Catechin; C001579:astragalin
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