Abstract
In this study, hybrids 7–12 and 19–24 were synthesized via Williamson reaction of O-Quinaldine alkyl bromide plus eugenol and O-triclosan alkyl bromide plus 8-hydroxyquinaldine, respectively. Structures of the products were elucidated by spectroscopic analysis. The compounds synthesized were evaluated for antileishmanial activity against L. panamensis amastigotes and cytotoxic activity against U-937 cells. The compounds 19, 20, and 21 that are 8-hydroxyquinaldine linked to triclosan by 3, 4, and 5-carbon space, respectively, were more active against axenic amastigotes (EC 50 = 23.6, 9.7, and 4.1 μg/ml, respectively). Compounds 19 and 21 were also active against intracellular amastigotes with EC 50 vales of 6.4 and 2.4 μg/ml, respectively, making these compounds promising for the development of new antileishmanial drugs.
Graphical Abstract
Quinoline–triclosan and quinoline–eugenol hybrids were obtained using Williamson etherification reactions. Leishmanicidal activity and cytotoxicity of these compounds are reported.
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Acknowledgment
The authors thank Blandine Séon-Méniel for the help during NMR measurements. This research was supported financially by the Universidad de Antioquia (Programa de Sostenibilidad).
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Arango, V., Domínguez, J.J., Cardona, W. et al. Synthesis and leishmanicidal activity of quinoline–triclosan and quinoline–eugenol hybrids. Med Chem Res 21, 3445–3454 (2012). https://doi.org/10.1007/s00044-011-9886-8
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DOI: https://doi.org/10.1007/s00044-011-9886-8