title: Alkaloids from the stem bark of Turraeanthus africanus (Meliaceae).
abstract: Fractionation of the methanol extract of the stem bark of Turraeanthus africanus led to the isolation of two new alkaloids designated turraeanthin A and B, together with two known alkaloids. The structures of the new alkaloids were elucidated by means of spectroscopic analysis and characterized as 10-O-demethyl-17-O-methyl isoarnottianamide and 11-demethoxyl-12-methoxyl oxynitidine respectively.
authors.affiliation: Department of Organic Chemistry, University of Douala, Douala, Cameroon. jucathmas@yahoo.fr
authors.forename: Juliette Catherine
authors.initials: JC
authors.lastname: Vardamides
authors.forename: Alain Bertrand
authors.initials: AB
authors.lastname: Dongmo
authors.forename: Michèle
authors.initials: M
authors.lastname: Meyer
authors.forename: Jean Claude
authors.initials: JC
authors.lastname: Ndom
authors.forename: Anatole Guy Blaise
authors.initials: AG
authors.lastname: Azebaze
authors.forename: Mathieu Rolland Sahmeza
authors.initials: MR
authors.lastname: Zounda
authors.forename: Valérie Tedjon
authors.initials: VT
authors.lastname: Sielinou
authors.forename: Brigitte
authors.initials: B
authors.lastname: Ndemangou
authors.forename: Augustin Ephrem
authors.initials: AE
authors.lastname: Nkengfack
authors.forename: Theophile Mpondo
authors.initials: TM
authors.lastname: Ngando
authors.forename: Zacharia Tane
authors.initials: ZT
authors.lastname: Fomum
mesh_terms: D000470:Alkaloids / Q000737:chemistry* / Q000302:isolation & purification; D029582:Meliaceae / Q000737:chemistry*; D000432:Methanol / Q000737:chemistry; D015394:Molecular Structure; D010617:Phenanthridines / Q000737:chemistry* / Q000302:isolation & purification*; D024301:Plant Bark / Q000737:chemistry*
chemical_list: D000470:Alkaloids; D010617:Phenanthridines; C513803:turraeanthin A; C513804:turraeanthin B; D000432:Methanol