Chemotaxonomy of Portuguese Ulex: Quinolizidine alkaloids as taxonomical markers

Patrícia Máximo, Ana Lourenço, Andreas Tei, Michael Wink

Research output: Contribution to journalArticlepeer-review

20 Citations (Scopus)


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, β-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.

Original languageEnglish
Pages (from-to)1943-1949
Number of pages7
Issue number17
Publication statusPublished - Sept 2006


  • Chemotaxonomy
  • Fabaceae
  • Quinolizidine alkaloids
  • Ulex airensis
  • Ulex australis
  • Ulex densus
  • Ulex europaeus
  • Ulex jussiaei
  • Ulex minor


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