title: New cytotoxic alkaloids from the wood of Vepris punctata from the Madagascar rainforest.
abstract: Bioassay-guided fractionation of a CH(2)Cl(2)/MeOH extract of the wood of Vepris punctata resulted in the isolation of three new furoquinoline alkaloids, 5-methoxymaculine (1), 5,8-dimethoxymaculine (2), and 4,5,6,7,8-pentamethoxyfuroquinoline (3), in addition to the four known alkaloids flindersiamine (4), kokusaginine (5), maculine (6), and skimmianine (7). The structures of the new alkaloids 1-3 were established on the basis of extensive 1D and 2D NMR spectroscopic data interpretation. All the isolated compounds were tested against the A2780 human ovarian cancer cell line, and all seven alkaloids showed weak cytotoxic activity.
authors.affiliation: Department of Chemistry, M/C 0212, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061, USA.
authors.forename: V S
authors.initials: VS
authors.lastname: Prakash Chaturvedula
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; D005260:Female; D006801:Humans; D008270:Madagascar; D015394:Molecular Structure; D019906:Nuclear Magnetic Resonance, Biomolecular; D010051:Ovarian Neoplasms; D010946:Plants, Medicinal / Q000737:chemistry*; D027821:Rutaceae / Q000737:chemistry*; D014407:Tumor Cells, Cultured / Q000187:drug effects; D014934:Wood
chemical_list: D000972:Antineoplastic Agents, Phytogenic