title: Chemotaxonomy of Portuguese Ulex: quinolizidine alkaloids as taxonomical markers.
abstract: Six species of Portuguese Ulex L. in a total of nineteen populations were studied by GC-EIMS as to their content in quinolizidine alkaloids. Sparteine, beta-isosparteine, jussiaeiine A, N-methylcytisine, cytisine, 5,6-dehydrolupanine, rhombifoline, lupanine, jussiaeiine B, N-formylcytisine, N-acetylcytisine, anagyrine, jussiaeiine C, jussiaeiine D, pohakuline, baptifoline, and epibaptifoline were detected. Analysis of the chromatograms showed that the chemical profile of all species was mainly composed of N-methylcytisine, cytisine, anagyrine, and jussiaeiines A, B, C and D. Therefore a quantification study of these alkaloids in all the populations studied was done by GC. These data were then submitted to cluster analysis and principal component analysis, which allowed the definition of five chemotypes and the recognition of hybrids. N-methylcytisine, cytisine, and jussiaeiines A, C and D are recognized as markers of this genus in Portugal.
authors.affiliation: REQUIMTE/CQFB, Departamento de Quimica, FCT, Universidade Nova de Lisboa, Quinta da Torre, 2829-516 Caparica, Lisboa, Portugal.
authors.forename: Patrícia
authors.initials: P
authors.lastname: Máximo
authors.forename: Ana
authors.initials: A
authors.lastname: Lourenço
authors.forename: Andreas
authors.initials: A
authors.lastname: Tei
authors.forename: Michael
authors.initials: M
authors.lastname: Wink
mesh_terms: D000470:Alkaloids / Q000737:chemistry*; D002849:Chromatography, Gas / Q000379:methods; D016000:Cluster Analysis; D015394:Molecular Structure; D011174:Portugal; D025341:Principal Component Analysis; D011807:Quinolizines / Q000737:chemistry*; D021241:Spectrometry, Mass, Electrospray Ionization / Q000379:methods; D039762:Ulex / Q000737:chemistry* / Q000145:classification*
chemical_list: D000470:Alkaloids; D011807:Quinolizines