title: Phragmalin limonoids from the Madagascan Meliaceae Neobeguea leandreana.
abstract: The combined hexane-CH(2)Cl(2) extract of the stembark of the Madagascan Meliaceae Neobeguea leandreana yielded three novel phragmalin limonoids, leandreanins A (1), B (2), and C (3). Leandreanins A (1) and B (2) are rare seco-ring D 17-keto compounds related to pseudrelone B, while leandreanin C (3) has an unprecedented acetoxy functionality at C-19.
authors.affiliation: Natural Products Research Group, School of Pure and Applied Chemistry, University of Natal, Durban 4041, South Africa. coombesp@nu.ac.za
authors.forename: Philip H
authors.initials: PH
authors.lastname: Coombes
authors.forename: Dulcie A
authors.initials: DA
authors.lastname: Mulholland
authors.forename: Milijaona
authors.initials: M
authors.lastname: Randrianarivelojosia
mesh_terms: D036701:Limonins / Q000737:chemistry / Q000302:isolation & purification*; D008270:Madagascar; D029582:Meliaceae / Q000737:chemistry*; D015394:Molecular Structure; D019906:Nuclear Magnetic Resonance, Biomolecular; D024301:Plant Bark / Q000737:chemistry; D018547:Plant Stems / Q000737:chemistry
chemical_list: D036701:Limonins