title: Cytotoxic compounds from Mundulea chapelieri from the Madagascar Rainforest.
abstract: Bioassay-guided fractionation of methanolic extracts of Mundulea chapelieri resulted in the isolation of two new flavonoids, isomundulinol (1) and 3-deoxy-MS-II (2), in addition to the eight known flavonoids 8-(3,3-dimethylallyl)-5,7-dimethoxyflavanone, MS-II, mundulinol, mundulone, munetone, rotenolone, rotenone, and tephrosin, and one known sesquiterpenoid, 8alpha-acetoxyelemol. The structures of the new flavonoids 1 and 2 were determined by 1D and 2D NMR experiments. All the isolated compounds were tested for cytotoxicity against the A2780 human ovarian cancer cell line; rotenolone and rotenone were the most potent compounds isolated, with IC(50) values of 0.5 and 0.7 microg/mL, respectively.
authors.affiliation: Department of Chemistry, M/C 0212, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061-0212, USA.
authors.forename: Shugeng
authors.initials: S
authors.lastname: Cao
authors.forename: Jennifer K
authors.initials: JK
authors.lastname: Schilling
authors.forename: James S
authors.initials: JS
authors.lastname: Miller
authors.forename: Rabodo
authors.initials: R
authors.lastname: Andriantsiferana
authors.forename: Vincent E
authors.initials: VE
authors.lastname: Rasamison
authors.forename: David G I
authors.initials: DG
authors.lastname: Kingston
mesh_terms: D000972:Antineoplastic Agents, Phytogenic / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D004354:Drug Screening Assays, Antitumor; D007887:Fabaceae / Q000737:chemistry*; D005260:Female; D005419:Flavonoids / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D006801:Humans; D020128:Inhibitory Concentration 50; D008270:Madagascar; D015394:Molecular Structure; D010946:Plants, Medicinal / Q000737:chemistry*; D014407:Tumor Cells, Cultured
chemical_list: C484837:3-deoxy-MS-II; D000972:Antineoplastic Agents, Phytogenic; D005419:Flavonoids; C484836:isomundulinol