作者:Lucie Paloque、Pierre Verhaeghe、Magali Casanova、Caroline Castera-Ducros、Aurélien Dumètre、Litaty Mbatchi、Sébastien Hutter、Manel Kraiem-M'Rabet、Michèle Laget、Vincent Remusat、Sylvain Rault、Pascal Rathelot、Nadine Azas、Patrice Vanelle
DOI:10.1016/j.ejmech.2012.04.029
日期:2012.8
A series of nitrated 2-substituted-quinolines was synthesized and evaluated in vitro toward Leishmania donovani promastigotes. In parallel, the in vitro cytotoxicity of these molecules was assessed on the murine J774 and human HepG2 cell lines. Thus, a very promising antileishmanial hit molecule was identified (compound 21), displaying an IC50 value of 6.6 mu M and CC50 values >= 100 mu M, conferring quite good selectivity index to this molecule, in comparison with 3 drug-compounds of reference (amphotericin B, miltefosine and pentamidine). Compound 21 also appears as an efficient in vitro antileishmanial molecule against both Leishmania infantum promastigotes and the intracellular L. donovani amastigotes (respective IC50 = 7.6 and 6.5 mu M). Moreover, hit quinoline 21 does not show neither significant antiplasmodial nor antitoxoplasmic in vitro activity and though, presents a selective antileishmanial activity. Finally, a structure activity relationships study enabled to define precisely the antileishmanial pharmacophore based on this nitroquinoline scaffold: 2-hydroxy-8-nitroquinoline. (C) 2012 Elsevier Masson SAS. All rights reserved.