title: Synthesis, structural elucidation and in vitro antiparasitic activity against Trypanosoma cruzi and Leishmania chagasi parasites of novel tetrahydro-1-benzazepine derivatives.
abstract: Forty six new 1,4-epoxy-2-exo-aryl- and cis-2-aryl-4-hydroxytetrahydro-1-benzazepine derivatives were synthesized and fully characterized. All compounds were tested in vitro against both Trypanosoma cruzi and Leishmania chagasi parasites and also for cytotoxicity using Vero and THP-1 mammalian cell lines. Many of the evaluated compounds showed remarkable activity against the epimastigote and intracellular amastigote forms of T. cruzi, with IC₅₀ values comparable with that of control drug nifurtimox, a nitrofuran derivative currently used in the treatment of Chagas' disease. Other derivatives were found to have good activity against L. chagasi promastigotes, with low toxicity against the mammalian cells, but neither of them was active on intracellular amastigotes of L. chagasi infecting THP-1 macrophages.
authors.affiliation: Laboratorio de Síntesis Orgánica, Escuela de Química, Universidad Industrial de Santander, A. A. 678, Bucaramanga, Santander, Colombia.
authors.forename: Sandra
authors.initials: S
authors.lastname: Gómez-Ayala
authors.forename: Julián A
authors.initials: JA
authors.lastname: Castrillón
authors.forename: Alirio
authors.initials: A
authors.lastname: Palma
authors.forename: Sandra M
authors.initials: SM
authors.lastname: Leal
authors.forename: Patricia
authors.initials: P
authors.lastname: Escobar
authors.forename: Alí
authors.initials: A
authors.lastname: Bahsas
mesh_terms: D000818:Animals; D000981:Antiprotozoal Agents / Q000138:chemical synthesis* / Q000627:therapeutic use / Q000633:toxicity; D001552:Benzazepines / Q000737:chemistry* / Q000627:therapeutic use / Q000633:toxicity; D002460:Cell Line; D014355:Chagas Disease / Q000188:drug therapy; D006801:Humans; D007893:Leishmania donovani / Q000187:drug effects*; D009682:Magnetic Resonance Spectroscopy; D008968:Molecular Conformation; D014349:Trypanosoma cruzi / Q000187:drug effects*
chemical_list: D000981:Antiprotozoal Agents; D001552:Benzazepines