title: Novel azabicyclo[3.2.2]nonane derivatives and their activities against Plasmodium falciparum K1 and Trypanosoma brucei rhodesiense.
abstract: New diaryl substituted 2-azabicyclo[3.2.2]nonane derivatives have been synthesized in order to investigate the influence of the aromatic substitution and of N substitution on the antiprotozoal activities of those compounds. Following a manual method for the Hansch approach, different 4-substituted aryl rings were systematically inserted, and moieties with varying basicity and polarity were attached to the ring nitrogen. All compounds were investigated for their activities against Trypanosoma brucei rhodesiense (STIB 900) and the K(1) strain of Plasmodium falciparum (resistant to chloroquine and pyrimethamine) and for their cytotoxicity using microplate assays. Some of the new compounds are amongst the most active antitrypanosomal agents in this series, and the selectivity index of a single derivative is superior in the 2-azabicyclo-nonane series.
authors.affiliation: Institute of Pharmaceutical Sciences, Pharmaceutical Chemistry, Karl-Franzens-University, Universitätsplatz 1, A-8010 Graz, Austria.
authors.forename: Heinrich
authors.initials: H
authors.lastname: Berger
authors.forename: Robert
authors.initials: R
authors.lastname: Weis
authors.forename: Marcel
authors.initials: M
authors.lastname: Kaiser
authors.forename: Reto
authors.initials: R
authors.lastname: Brun
authors.forename: Robert
authors.initials: R
authors.lastname: Saf
authors.forename: Werner
authors.initials: W
authors.lastname: Seebacher
mesh_terms: D000818:Animals; D000962:Antimalarials / Q000138:chemical synthesis / Q000737:chemistry* / Q000494:pharmacology*; D053961:Azabicyclo Compounds / Q000138:chemical synthesis / Q000737:chemistry* / Q000494:pharmacology*; D010963:Plasmodium falciparum / Q000187:drug effects*; D014344:Trypanocidal Agents / Q000138:chemical synthesis / Q000737:chemistry* / Q000494:pharmacology*; D014346:Trypanosoma brucei brucei / Q000187:drug effects*
chemical_list: D000962:Antimalarials; D053961:Azabicyclo Compounds; D014344:Trypanocidal Agents