Aryloxyethyl Thiocyanates Are Potent Growth Inhibitors of Trypanosoma cruzi and Toxoplasma gondii.

Abstract

As a part of our project aimed at searching for new safe chemotherapeutic agents against parasitic diseases, several compounds structurally related to the antiparasitic agent WC-9 (4-phenoxyphenoxyethyl thiocyanate), which were modified at the terminal phenyl ring, were designed, synthesized, and evaluated as growth inhibitors against Trypanosoma cruzi, the etiological agent of Chagas disease, and Toxoplasma gondii, the parasite responsible of toxoplasmosis. Most of the synthetic analogues exhibited similar antiparasitic activity and were slightly more potent than our lead WC-9. For example, two trifluoromethylated derivatives exhibited ED50 values of 10.0 and 9.2 μM against intracellular T. cruzi, whereas they showed potent action against tachyzoites of T. gondii (ED50 values of 1.6 and 1.9 μM against T. gondii). In addition, analogues of WC-9 in which the terminal aryl group is in the meta position with respect to the alkyl chain bearing the thiocyanate group showed potent inhibitory action against both T. cruzi and T. gondii at the very low micromolar range, which suggests that a para-phenyl substitution pattern is not necessary for biological activity.

• Authors: María N Chao, Carolina Exeni Matiuzzi, Melissa Storey, Catherine Li, Sergio H Szajnman, Roberto Docampo, Silvia N J Moreno, Juan B Rodriguez
• Journal: ChemMedChem (ChemMedChem) Vol. 10 Issue 6 Pg. 1094-108 (Jun 2015) ISSN: 1860-7187 [Electronic] Germany
• PMID: 25914175 (Publication Type: Journal Article, Research Support, N.I.H., Extramural)
• Copyright: © 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Chemical References

• Antiprotozoal Agents
• Thiocyanates
• thiocyanate

Topics

• Animals
• Antiprotozoal Agents (pharmacology)
• Chlorocebus aethiops
• Thiocyanates (pharmacology)
• Toxoplasma (drug effects, growth & development)
• Trypanosoma cruzi (drug effects, growth & development)
• Vero Cells