title: Limonoids from the leaves of Toona ciliata var. yunnanensis.
abstract: Twelve limonoids, toonayunnanins A-L (1-12) and eleven known compounds (13-23) were isolated from the leaves of Toona ciliata var. yunnanensis, and their structures were elucidated by means of extensive spectroscopic analyses, particularly 1D and 2D NMR techniques. The inhibitory effects of all the isolated compounds were evaluated on human tumor cell lines, such as HL-60, SMMC-7721, A-549, MCF-7 and SW480. Cedrelone (13) and dysobinin (18) showed significant cytotoxicity, and toonayunnanin B (2) and epoxyazadiradione (14), were found to be slightly cytotoxic against the above cell lines. Furthermore, this study provides valuable information for the chemotaxonomy of T. ciliata varieties.
authors.affiliation: State Key Laboratory of Photochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, Yunnan, PR China.
authors.forename: Jie-Qing
authors.initials: JQ
authors.lastname: Liu
authors.forename: Cui-Fang
authors.initials: CF
authors.lastname: Wang
authors.forename: Yan
authors.initials: Y
authors.lastname: Li
authors.forename: Jian-Chao
authors.initials: JC
authors.lastname: Chen
authors.forename: Lin
authors.initials: L
authors.lastname: Zhou
authors.forename: Ming-Hua
authors.initials: MH
authors.lastname: Qiu
mesh_terms: D000972:Antineoplastic Agents, Phytogenic / Q000737:chemistry / Q000302:isolation & purification / Q000494:pharmacology; D004354:Drug Screening Assays, Antitumor; D004365:Drugs, Chinese Herbal / Q000737:chemistry; D018922:HL-60 Cells; D006801:Humans; D036701:Limonins / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D009682:Magnetic Resonance Spectroscopy; D029582:Meliaceae / Q000737:chemistry*; D008968:Molecular Conformation; D018515:Plant Leaves / Q000737:chemistry*; D014315:Triterpenes / Q000302:isolation & purification / Q000494:pharmacology
chemical_list: D000972:Antineoplastic Agents, Phytogenic; D004365:Drugs, Chinese Herbal; D036701:Limonins; D014315:Triterpenes; C414666:cedrelone; C572816:toonayunnanin; C099260:epoxyazadiradione