title: Chemical constituents of Picea neoveitchii.
abstract: Four flavonoids, 5,7,4'-trihydroxy-3,8,-dimethoxy-6-C-methylflavone (1), 5,8,4'-trihydroxy-3,7-dimethoxy-6-C-methylflavone (2), 7-methoxy-6-C-methylkaempferol (3) and kaempferol-7-O-(2″-E-p-coumaroyl)-α-l-arabinofuranoside (4), together with 15 known compounds, were isolated from the twigs and leaves of Picea neoveitchii Mast. Their structures were elucidated on the basis of analyses of spectroscopic data. Compound 4 showed strong anti-fungal activity against Fusarium oxysporum whereas compounds 1-4 were all active against Rhizoctonia solani.
authors.affiliation: Key Laboratory of Natural Pesticides and Chemical Biology, South China Agricultural University, Guangzhou 510642, People's Republic of China. songzj430@yahoo.com.cn
authors.forename: Zhijun
authors.initials: Z
authors.lastname: Song
authors.forename: Weiquan
authors.initials: W
authors.lastname: Chen
authors.forename: Xiaoying
authors.initials: X
authors.lastname: Du
authors.forename: Heng
authors.initials: H
authors.lastname: Zhang
authors.forename: Lijing
authors.initials: L
authors.lastname: Lin
authors.forename: Hanhong
authors.initials: H
authors.lastname: Xu
mesh_terms: D000935:Antifungal Agents / Q000737:chemistry* / Q000302:isolation & purification* / Q000494:pharmacology; D005419:Flavonoids / Q000737:chemistry* / Q000302:isolation & purification* / Q000494:pharmacology; D005670:Fusarium / Q000187:drug effects; D008826:Microbial Sensitivity Tests; D015394:Molecular Structure; D028222:Picea / Q000737:chemistry*; D012232:Rhizoctonia / Q000187:drug effects
chemical_list: D000935:Antifungal Agents; D005419:Flavonoids