title: [Studies on chemical components of Cirsium segestum].
abstract: Six chemical components were got from the alcohol extract of Cirsium segestum, their structures were identified by UV, IR, NMR, MS and EA. They were 5,7-dihydroxyflavone, baicalin, oleanolic acid, cholesterol, methyl ursolate and rutin. The first to the fifth of which were got from Cirsium segestum for the first time.
authors.affiliation: Guangdong Pharmaceutical University, Guangzhou 510006, China. gnist163@163.com
authors.forename: Qing
authors.initials: Q
authors.lastname: Zhou
authors.forename: Lin
authors.initials: L
authors.lastname: Chen
authors.forename: Zhi-peng
authors.initials: ZP
authors.lastname: Liu
authors.forename: Qin-ying
authors.initials: QY
authors.lastname: Deng
mesh_terms: D002784:Cholesterol / Q000737:chemistry / Q000302:isolation & purification; D031180:Cirsium / Q000737:chemistry*; D000431:Ethanol; D005419:Flavonoids / Q000737:chemistry / Q000302:isolation & purification*; D015394:Molecular Structure; D009828:Oleanolic Acid / Q000737:chemistry / Q000302:isolation & purification; D018517:Plant Roots / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry*; D012431:Rutin / Q000737:chemistry / Q000302:isolation & purification; D013056:Spectrophotometry, Ultraviolet; D014315:Triterpenes / Q000737:chemistry / Q000302:isolation & purification
chemical_list: D005419:Flavonoids; D014315:Triterpenes; C454321:methyl ursolate; C038044:baicalin; D000431:Ethanol; D012431:Rutin; D009828:Oleanolic Acid; D002784:Cholesterol