title: Antiproliferative prenylated stilbenes and flavonoids from Macaranga alnifolia from the Madagascar rainforest.
abstract: Bioassay-guided fractionation of an extract of the fruit of Macaranga alnifolia from Madagascar led to the isolation of four new prenylated stilbenes, schweinfurthins E-H (1-4), and one new geranylated dihydroflavonol, alnifoliol (5). The known prenylated stilbene vedelianin (6) and the known geranylated flavonoids bonanniol A (7), diplacol (8), bonannione A (9), and diplacone (10) were also isolated. All 10 compounds were tested for antiproliferative activity in the A2780 human ovarian cancer cell line assay. Vedelianin (IC50 = 0.13 microM) exhibited the greatest activity among all isolates, while schweinfurthin E (IC50 = 0.26 microM) was the most potent of the new compounds.
authors.affiliation: Department of Chemistry, M/C 0212, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, USA.
authors.forename: Brent J
authors.initials: BJ
authors.lastname: Yoder
authors.forename: Shugeng
authors.initials: S
authors.lastname: Cao
authors.forename: Andrew
authors.initials: A
authors.lastname: Norris
authors.forename: James S
authors.initials: JS
authors.lastname: Miller
authors.forename: Fidy
authors.initials: F
authors.lastname: Ratovoson
authors.forename: Jeremi
authors.initials: J
authors.lastname: Razafitsalama
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; D019665:Euphorbiaceae / Q000737:chemistry*; D005260:Female; D005419:Flavonoids / Q000737:chemistry / Q000302:isolation & purification / Q000494:pharmacology; D006801:Humans; D008270:Madagascar; D010051:Ovarian Neoplasms; D010946:Plants, Medicinal / Q000737:chemistry*; D013267:Stilbenes / Q000737:chemistry / Q000302:isolation & purification / Q000494:pharmacology; D014407:Tumor Cells, Cultured
chemical_list: D000972:Antineoplastic Agents, Phytogenic; D005419:Flavonoids; D013267:Stilbenes