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Discovery of potent nitrotriazole-based antitrypanosomal agents : in vitro and in vivo evaluation

Papadopoulou, Maria V. and Bloomer, William D. and Rosenzweig, Howard S. and O'Shea, Ivan P. and Wilkinson, Shane R. and Kaiser, Marcel and Chatelain, Eric and Ioset, Jean-Robert. (2015) Discovery of potent nitrotriazole-based antitrypanosomal agents : in vitro and in vivo evaluation. Bioorganic & medicinal chemistry, 23 (19). pp. 6467-6476.

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Official URL: http://edoc.unibas.ch/39864/

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Abstract

3-Nitro-1H-1,2,4-triazole- and 2-nitro-1H-imidazole-based amides with an aryloxy-phenyl core were synthesized and evaluated as antitrypanosomal agents. All 3-nitrotriazole-based derivatives were extremely potent anti-Trypanosoma cruzi agents at sub nM concentrations and exhibited a high degree of selectivity for the parasite. The 2-nitroimidazole analogs were only moderately active against T. cruzi amastigotes and exhibited low selectivity. Both types of compound were active against Leishmania donovani axenic amastigotes with excellent selectivity for the parasite, whereas three 2-nitroimidazole-based analogs were also moderately active against infected macrophages. However, no compound demonstrated selective activity against Trypanosoma brucei rhodesiense. The most potent in vitro anti-T. cruzi compounds were tested in an acute murine model and reduced the parasites to an undetectable level after five days of treatment at 13mg/kg/day. Such compounds are potential inhibitors of T. cruzi CYP51 and, being excellent substrates for the type I nitroreductase (NTR) which is specific to trypanosomatids, work as prodrugs and constitute a new generation of effective and more affordable antitrypanosomal agents.
Faculties and Departments:09 Associated Institutions > Swiss Tropical and Public Health Institute (Swiss TPH)
09 Associated Institutions > Swiss Tropical and Public Health Institute (Swiss TPH) > Department of Medical Parasitology and Infection Biology > Parasite Chemotherapy (Mäser)
UniBasel Contributors:Kaiser, Marcel
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:Pergamon
ISSN:0968-0896
Note:Publication type according to Uni Basel Research Database: Journal article
Identification Number:
Last Modified:08 Dec 2017 14:02
Deposited On:27 Jan 2016 14:00

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