title: Two new biflavonones from Coreopsis tinctoria.
abstract: Two new biflavonone compounds, sikokianin D (1) and sikokianin E (2), were isolated from the capitulum of Coreopsis tinctoria. The structures of these compounds were elucidated by spectroscopic techniques including NMR, HRESIMS and circular dichroism (CD).
authors.affiliation: a State Key Laboratory of New Drug & Pharmaceutical Process , Shanghai Institute of Pharmaceutical Industry , Shanghai 200040 , China.
authors.forename: Ren-Jie
authors.initials: RJ
authors.lastname: Yan
authors.affiliation: a State Key Laboratory of New Drug & Pharmaceutical Process , Shanghai Institute of Pharmaceutical Industry , Shanghai 200040 , China.
authors.forename: Mo-Ying
authors.initials: MY
authors.lastname: Li
authors.affiliation: a State Key Laboratory of New Drug & Pharmaceutical Process , Shanghai Institute of Pharmaceutical Industry , Shanghai 200040 , China.
authors.forename: Hai-Feng
authors.initials: HF
authors.lastname: Zhou
authors.affiliation: a State Key Laboratory of New Drug & Pharmaceutical Process , Shanghai Institute of Pharmaceutical Industry , Shanghai 200040 , China.
authors.forename: De-Yun
authors.initials: DY
authors.lastname: Kong
authors.affiliation: a State Key Laboratory of New Drug & Pharmaceutical Process , Shanghai Institute of Pharmaceutical Industry , Shanghai 200040 , China.
authors.forename: Tong
authors.initials: T
authors.lastname: Wu
mesh_terms: D044946:Biflavonoids / Q000737:chemistry / Q000302:isolation & purification*; D002851:Chromatography, High Pressure Liquid; D031945:Coreopsis / Q000737:chemistry*; D004365:Drugs, Chinese Herbal / Q000737:chemistry / Q000302:isolation & purification*; D015394:Molecular Structure; D019906:Nuclear Magnetic Resonance, Biomolecular
chemical_list: D044946:Biflavonoids; D004365:Drugs, Chinese Herbal; C000623060:sikokianin D; C000623061:sikokianin E
keywords: Compositae; Coreopsis tinctoria; biflavonones; chemical constituents