title: New limonoids and a dihydrobenzofuran norlignan from the roots of Toona sinensis.
abstract: Two new limonoids, toonins A (1) and B (2), and one new dihydrobenzofuran norlignan, toonin C (3), were isolated from the roots of Toona sinensis together with the ten known compounds 4-methoxy-6-(2',4'-dihydroxy-6'-methylphenyl)-pyran-2-one (4), bourjotinolone A (5), proceranone (6), matairesinol (7), 4-hydroxy-3-methoxybenzene-ethanol (8), syringic acid (9), isoscopoletin (10), lyoniresinol (11), aloeemodin (12), and β-sitosterol (13). Their structures were elucidated on the basis of one- and two-dimensional spectroscopic analysis. Isolation of compounds 4, 6-13 from this plant is reported here for the first time.
authors: Key Laboratory of Tea Biochemistry and Biotechnology, School of Tea and Food Technology, Anhui Agricultural University, Hefei 230036, China.
authors: Xiao-Jie
authors: XJ
authors: Dong
authors: Yun-Fei
authors: YF
authors: Zhu
authors: Guan-Hu
authors: GH
authors: Bao
authors: Feng-Lin
authors: FL
authors: Hu
authors: Guo-Wei
authors: GW
authors: Qin
mesh_terms: D031587:Cedrela / Q000737:chemistry*; D016166:Free Radical Scavengers / Q000737:chemistry / Q000494:pharmacology; D036701:Limonins / Q000737:chemistry* / Q000494:pharmacology; D015394:Molecular Structure; D019906:Nuclear Magnetic Resonance, Biomolecular; D010936:Plant Extracts / Q000737:chemistry / Q000494:pharmacology; D018517:Plant Roots / Q000737:chemistry*; D013237:Stereoisomerism
chemical_list: D016166:Free Radical Scavengers; D036701:Limonins; D010936:Plant Extracts