title: Uncinataflavone, a new flavonoid with a methyl benzoate substituent from Selaginella uncinata.
abstract: Uncinataflavone (1), a new flavonoid, together with four known compounds (2-5), was isolated from Selaginella uncinata (Desv.) Spring. Compounds 2 and 3 were isolated from the genus selaginella for the first time. The structure of the new compound was determined as methyl 3-(5,7-dihydroxy-2-(4-hydroxyphenyl)-4-oxo-4H-chromen-6-yl)-4-methoxybenzoate by means of spectroscopic evidence, including UV, IR, 1D and 2D NMR analyses as well as HR-ESI-MS. These compounds (1-5) were evaluated for the antioxidant activity in 1,1-diphenyl-2-picrylhydrazyl assay system.
authors: School of Pharmaceutical Sciences, Central South University, Changsha 410013, China.
authors: Hui
authors: H
authors: Zou
authors: Kang-Ping
authors: KP
authors: Xu
authors: Fu-Shuang
authors: FS
authors: Li
authors: Zhen-Xing
authors: ZX
authors: Zou
authors: Hong-Ping
authors: HP
authors: Long
authors: Guang
authors: G
authors: Li
authors: Hui
authors: H
authors: Wang
authors: Gui-Shan
authors: GS
authors: Tan
mesh_terms: D000975:Antioxidants / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D001713:Biphenyl Compounds / Q000494:pharmacology; D004365:Drugs, Chinese Herbal / Q000737:chemistry / Q000302:isolation & purification*; D005419:Flavonoids / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D015394:Molecular Structure; D019906:Nuclear Magnetic Resonance, Biomolecular; D010851:Picrates / Q000494:pharmacology; D032503:Selaginellaceae / Q000737:chemistry*
chemical_list: D000975:Antioxidants; D001713:Biphenyl Compounds; D004365:Drugs, Chinese Herbal; D005419:Flavonoids; D010851:Picrates; C582363:uncinataflavone A; C004931:1,1-diphenyl-2-picrylhydrazyl