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Antimalarial and antitubercular nostocarboline and eudistomin derivatives: Synthesis, in vitro and in vivo biological evaluation

Bonazzi, S. and Barbaras, D. and Patiny, L. and Scopelliti, R. and Schneider, P. and Cole, S. T. and Kaiser, M. and Brun, R. and Gademann, K.. (2010) Antimalarial and antitubercular nostocarboline and eudistomin derivatives: Synthesis, in vitro and in vivo biological evaluation. Bioorganic and Medicinal Chemistry, 18 (4). pp. 1464-1476.

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Abstract

The synthesis of nine nostocarboline derivatives with substitutions of the 2-methyl group by alkyl, aryl and functionalized residues, 10 symmetrical bis cationic dimers linking 6-Cl-norharmane through the 2-position and fifteen derivatives of the marine alkaloids eudistomin N and O is reported. These compounds were evaluated in vitro against four parasites (Trypanosoma brucei rhodesiense STIB 900, Trypanosoma cruzi Tulahuen C2C4, Leishmania donovani MHOM-ET-67/L82 axenic amastigotes, and Plasmodium falciparum K1 strain), against Mycobacterium tuberculosis H37Rv, Mycobacterium smegmatis mc(2)155 and Corynebacterium glutamicum ATCC13032, and cytotoxicity was determined against L6 rat myoblast cells. Nostocarboline and derivatives displayed potent and selective in vitro inhibition of P. falciparum with weak cytotoxicity. The dimers displayed submicromolar inhibition of L. donovani and T. brucei, and nanomolar activity against P. falciparum, albeit with pronounced cytotoxicity. One dimer showed a MIC(99) value against M. tuberculosis of 2.5mug/ml. The alkylated eudistomin N and O derivatives displayed activities down to 18nM against P. falciparum for N-Me Eudistomin N. Four dimers, nostocarboline and three eudostomin derivatives were evaluated in an in vivo Plasmodium berghei mouse model. No significant activity was observed for the dimers, but a 50% reduction in parasitaemia was observed at 4x50mg/kg ip for nostocarboline
Faculties and Departments:05 Faculty of Science > Departement Chemie > Former Organization Units Chemistry > Organische Chemie (Gademann)
09 Associated Institutions > Swiss Tropical and Public Health Institute (Swiss TPH) > Department of Medical Parasitology and Infection Biology (MPI) > Parasite Chemotherapy (Mäser)
UniBasel Contributors:Gademann, Karl and Brun, Reto and Kaiser, Marcel
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:Elsevier
ISSN:0968-0896
Note:Publication type according to Uni Basel Research Database: Journal article
Language:English
Identification Number:
Last Modified:02 Feb 2017 10:39
Deposited On:08 Jun 2012 06:47

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