title: Sterols and terpenoids from Melia azedarach.
abstract: Three new sterols (1-3) including an unprecedented ring A-seco natural product (1), five new terpenoids (4-8), and 15 known compounds were isolated from the bark of Melia azedarach. Their structures were elucidated by means of spectroscopic data, and the structure of 1 was confirmed by X-ray crystallography.
authors.affiliation: State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650204, People's Republic of China.
authors.forename: Qin-Gang
authors.initials: QG
authors.lastname: Tan
authors.forename: Xiao-Ning
authors.initials: XN
authors.lastname: Li
authors.forename: Hao
authors.initials: H
authors.lastname: Chen
authors.forename: Tao
authors.initials: T
authors.lastname: Feng
authors.forename: Xiang-Hai
authors.initials: XH
authors.lastname: Cai
authors.forename: Xiao-Dong
authors.initials: XD
authors.lastname: Luo
mesh_terms: D018360:Crystallography, X-Ray; D004365:Drugs, Chinese Herbal / Q000737:chemistry / Q000302:isolation & purification*; D031586:Melia azedarach / Q000737:chemistry*; D008968:Molecular Conformation; D015394:Molecular Structure; D019906:Nuclear Magnetic Resonance, Biomolecular; D024301:Plant Bark / Q000737:chemistry; D013237:Stereoisomerism; D013261:Sterols / Q000737:chemistry / Q000302:isolation & purification*; D013729:Terpenes / Q000737:chemistry / Q000302:isolation & purification*
chemical_list: D004365:Drugs, Chinese Herbal; D013261:Sterols; D013729:Terpenes