Evaluation of Azasterols as Anti-Parasitics.

Gros, L; Lorente, SO; Jimenez, CJ; Yardley, V; Rattray, L; Wharton, H; Little, S; Croft, SL; Ruiz-Perez, LM; Gonzalez-Pacanowska, D; Gilbert, IH; (2006) Evaluation of Azasterols as Anti-Parasitics. Journal of medicinal chemistry, 49 (20). pp. 6094-6103. ISSN 0022-2623 DOI: https://doi.org/10.1021/jm060290f

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In this article, the design and synthesis of some novel azasterols is described, followed by their evaluation against Trypanosoma brucei rhodesiense, T. cruzi, Leishmania donovani, and Plasmodium falciparum, the causative agents of human African trypanosomiasis, Chagas disease, leishmaniasis, and malaria, respectively. Some of the compounds showed anti-parasitic activity. In particular, a number of compounds appeared to very potently inhibit the growth of the blood stream form T. b. rhodesiense, with one compound giving an IC(50) value of 12 nM. Clear structure activity relationships could be discerned. These compounds represent important leads for further optimization. Azasterols have previously been shown to inhibit sterol biosynthesis in T. cruzi and L. donovani by the inhibition of the enzyme sterol 24-methyltransferase. However, in this case, none of the compounds showed inhibition of the enzyme. Therefore, these compounds have an unknown mode of action.

Item Type: Article
Faculty and Department: Faculty of Infectious and Tropical Diseases > Dept of Immunology and Infection
Research Centre: Leishmaniasis Group
PubMed ID: 17004723
Web of Science ID: 240826200024
URI: http://researchonline.lshtm.ac.uk/id/eprint/10998


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