title: [A new bisabolane-type sesquiterpenoid from Coreopsis tinctoria].
abstract: To study the chemical constituents of the inflorescences of Coreopsis tinctoria from Xinjiang, isolation and purification of constituents were carried out by column chromatography on macroporous resin (D101) , MCI gel, MDS gel, silica gel, Sephadex LH-20 and semi-preparative HPLC. The structures of the compounds were identified by physicchemical properties and spectral data analysis. Fourteen compounds were isolated and identified as coretinterpenoid A (1), coretinphenol (2), quercetin (3), quercetin-3-O-β-glucopyranoside (4), luteolin (5), taxifolin (6), 7, 3', 5'-trihydroxyflavanone (7), isookanin (8), isookanin-7-O-β-D-glucopyranoside (9), 5, 7, 3', 5'-tetrahydroxyflavanone-7-O-β-D-glucopyranoside (10), butein (11), okanin (12), sulfuretin (13), and linocinnamarin (14). Compound 1 was a new isabolane-type sesquiterpenoid and compounds 4, 10 and 13 were isolated from this plant for the first time.
authors.forename: Jin-jun
authors.initials: JJ
authors.lastname: Liu
authors.forename: Yin-jun
authors.initials: YJ
authors.lastname: Yang
authors.forename: Yin-di
authors.initials: YD
authors.lastname: Zhu
authors.forename: Guang-zhi
authors.initials: GZ
authors.lastname: Li
authors.forename: Wen-hua
authors.initials: WH
authors.lastname: Huang
authors.forename: Bao-lin
authors.initials: BL
authors.lastname: Guo
mesh_terms: D031945:Coreopsis / Q000737:chemistry*; D012717:Sesquiterpenes / Q000737:chemistry / Q000302:isolation & purification*
chemical_list: D012717:Sesquiterpenes