RESUMEN
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.
Asunto(s)
Alcaloides/química , Alcaloides/genética , Rutaceae/química , Rutaceae/clasificación , Alcaloides/aislamiento & purificación , Espectroscopía de Resonancia Magnética , Filogenia , Extractos Vegetales/química , Hojas de la Planta/química , Rutaceae/genéticaRESUMEN
The chromosome numbers of 37 species belonging to 31 genus and 14 families were analized. The following results were obtained: a) 14 species presented the same chromosome numbers already reported in the specialized literature; b) species showed chromosome numbers equal to at least one of the previous determinations; c) 1 species presented chromosome number different from the number of all previous reports; d) 5 species had their chromosome number reported for the first time