title: Cytotoxic compounds of Physena madagascariensis from the Madagascar rain forest paragraph sign.
abstract: Two new flavanones, remangiflavanones D and E (1 and 2), were isolated from an extract of the twigs, leaves, and flowers of Physena madagascariensis together with three known flavanones, remangiflavanones A-C (3-5), and (E)-N-feruloyltyramine (6). The structures of the new compounds 1 and 2 were established on the basis of one-dimensional and two-dimensional NMR spectroscopic data interpretation. All compounds were evaluated for their cytotoxicity in the A2780 human ovarian cancer cell line. Compound 5 was the most active with an IC50 value of 2.5 microg mL-1.
authors.affiliation: Department of Chemistry, M/C 0212, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061, USA.
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: Chris
authors.initials: C
authors.lastname: Birkinshaw
authors.forename: Rabodo
authors.initials: R
authors.lastname: Andriantsiferana
authors.forename: Vincent E
authors.initials: VE
authors.lastname: Rasamison
authors.forename: Stephan
authors.initials: S
authors.lastname: Rakotonandrasana
authors.forename: David G I
authors.initials: DG
authors.lastname: Kingston
mesh_terms: D000972:Antineoplastic Agents, Phytogenic / Q000737:chemistry / Q000302:isolation & purification / Q000494:pharmacology; D029748:Caryophyllaceae / Q000737:chemistry*; D045744:Cell Line, Tumor; D002942:Circular Dichroism; D003603:Cytotoxins / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D005260:Female; D044950:Flavanones / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D006801:Humans; D020128:Inhibitory Concentration 50; D008270:Madagascar; D013058:Mass Spectrometry; D015394:Molecular Structure; D019906:Nuclear Magnetic Resonance, Biomolecular; D010051:Ovarian Neoplasms / Q000188:drug therapy; D035261:Plant Components, Aerial / Q000737:chemistry; D010936:Plant Extracts / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D013056:Spectrophotometry, Ultraviolet; D017550:Spectroscopy, Fourier Transform Infrared
chemical_list: D000972:Antineoplastic Agents, Phytogenic; D003603:Cytotoxins; D044950:Flavanones; D010936:Plant Extracts