title: Cytotoxic and anti-inflammatory triterpenoids from Toona ciliata.
abstract: Toonaciliatavarins A-H (1-8), including three new protolimonoids (1-3), two new tirucallane-type triterpenoids (4 and 5), and three new tetranortriterpenoids (6-8), and 10 known compounds were isolated from the stem barks of Toona ciliata Roem. var. henryi. Their structures were identified on the basis of spectroscopic analysis. The absolute configurations of 2 and 8 were determined by ECD calculation. The new isolates were evaluated for their cytotoxicities using six human cancer cell lines and also for their inhibitory effects on lipopolysaccharide-induced nitric oxide production in RAW264.7 cells. Compounds 4 and 5 showed moderate cytotoxicities, and the protolimonoids (1-3) exhibited marked inhibitory effects on LPS-stimulated NO production.
authors.affiliation: State Key Laboratory of Natural Medicines, Department of Natural Medicinal Chemistry, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, People's Republic of China.
authors.forename: Feng
authors.initials: F
authors.lastname: Zhang
authors.forename: Jun-Song
authors.initials: JS
authors.lastname: Wang
authors.forename: Yu-Cheng
authors.initials: YC
authors.lastname: Gu
authors.forename: Ling-Yi
authors.initials: LY
authors.lastname: Kong
mesh_terms: D000818:Animals; D000893:Anti-Inflammatory Agents / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology*; D004365:Drugs, Chinese Herbal / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology*; D006801:Humans; D036701:Limonins / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology*; D008070:Lipopolysaccharides / Q000494:pharmacology; D008264:Macrophages / Q000187:drug effects; D029582:Meliaceae / Q000737:chemistry*; D051379:Mice; D015394:Molecular Structure; D009569:Nitric Oxide / Q000096:biosynthesis; D019906:Nuclear Magnetic Resonance, Biomolecular; D018547:Plant Stems / Q000737:chemistry; D014315:Triterpenes / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology*
chemical_list: D000893:Anti-Inflammatory Agents; D004365:Drugs, Chinese Herbal; D036701:Limonins; D008070:Lipopolysaccharides; D014315:Triterpenes; D009569:Nitric Oxide