title: Alkaloids from Dictyoloma vandellianum: their chemosystematic significance.
abstract: The dichloromethane extract from leaves of Dictyoloma vandellianum afforded five alkaloids 2-(14'-hydroxy-14',15'-dimethylhexadecanyl)-4-quinolone, 2-(12'-hydroxy-12'-methyltridecanyl)-3-methoxy-4-quinolone, 2-(12'-hydroxy-12'-methyltridecanyl)-4-quinolone, 2-(14'-hydroxy-14',15'-dimethylhexadecanyl)-3-methoxy-4-quinolone, 6-methoxydictyolomide A, besides the known alkaloid 8-methoxyflindersine and beta-sitosterol. The presence of 2-alkyl-4(1H)-quinolones in D. vandellianum shows strong similarities with the Zanthoxyleae, which contains several 2-alkyl-4-quinolones. Thus, the Dictyolomatoideae apparently occupies a position between the proto-Rutaceae genera and the Spathelioideae, but close to the Zanthoxyleae.
authors.affiliation: Departamento de Química, Universidade Federal de São Carlos, Caixa Postal 676, 13565-905 São Carlos, SP, Brazil.
authors.forename: Claudenice F Providelo
authors.initials: CF
authors.lastname: Sartor
authors.forename: M Fátima das G F
authors.initials: MF
authors.lastname: da Silva
authors.forename: João B
authors.initials: JB
authors.lastname: Fernandes
authors.forename: Paulo C
authors.initials: PC
authors.lastname: Vieira
authors.forename: Edson Rodrigues
authors.initials: ER
authors.lastname: Fo
authors.forename: Diógenes A
authors.initials: DA
authors.lastname: Garcia Cortez
mesh_terms: D000470:Alkaloids / Q000737:chemistry* / Q000235:genetics* / Q000302:isolation & purification; D009682:Magnetic Resonance Spectroscopy; D010802:Phylogeny; D010936:Plant Extracts / Q000737:chemistry; D018515:Plant Leaves / Q000737:chemistry; D027821:Rutaceae / Q000737:chemistry* / Q000145:classification* / Q000235:genetics
chemical_list: D000470:Alkaloids; D010936:Plant Extracts