title: Phenolic compounds from the rhizomes of Dioscorea bulbifera.
abstract: One new bibenzyl, 7, and one new diarylheptanone, diobulbinone A (18), together with sixteen known compounds, 1-6 and 8-17, have been isolated form the rhizomes of Dioscorea bulbifera. Their structures were elucidated by NMR and MS analyses. Compound 7 showed high antioxidant capacity in FRAP assay and DPPH radical-scavenging activity.
authors.affiliation: The MOE Key Laboratory for Standardization of Chinese Medicines, Institute of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, P R China.
authors.forename: Hai
authors.initials: H
authors.lastname: Liu
authors.forename: Karl W K
authors.initials: KW
authors.lastname: Tsim
authors.forename: Gui-Xin
authors.initials: GX
authors.lastname: Chou
authors.forename: Jun-Ming
authors.initials: JM
authors.lastname: Wang
authors.forename: Li-Li
authors.initials: LL
authors.lastname: Ji
authors.forename: Zheng-Tao
authors.initials: ZT
authors.lastname: Wang
mesh_terms: D000975:Antioxidants / Q000302:isolation & purification* / Q000494:pharmacology; D001632:Bibenzyls / Q000302:isolation & purification* / Q000494:pharmacology; D001713:Biphenyl Compounds / Q000737:chemistry; D036381:Diarylheptanoids / Q000302:isolation & purification* / Q000494:pharmacology; D027742:Dioscorea / Q000737:chemistry*; D004305:Dose-Response Relationship, Drug; D005290:Ferric Compounds / Q000737:chemistry; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D010084:Oxidation-Reduction; D010851:Picrates / Q000737:chemistry; D027343:Rhizome / Q000737:chemistry
chemical_list: D000975:Antioxidants; D001632:Bibenzyls; D001713:Biphenyl Compounds; D036381:Diarylheptanoids; D005290:Ferric Compounds; D010851:Picrates; C004931:1,1-diphenyl-2-picrylhydrazyl