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Design, synthesis and biological evaluation of new potent 5-nitrofuryl derivatives as anti-Trypanosoma cruzi agents. Studies of trypanothione binding site of trypanothione reductase as target for rational design



Design, synthesis and biological evaluation of new potent 5-nitrofuryl derivatives as anti-Trypanosoma cruzi agents. Studies of trypanothione binding site of trypanothione reductase as target for rational design



European Journal of Medicinal Chemistry 39(5): 421-431



Design, using force-field calculations on the catalytic site of trypanothione reductase from Trypanosoma cruzi, has led to the development of new 5-nitrofuryl derivatives as potential anti-trypanosomal agents. The synthesized compounds were tested in vitro against T. cruzi and more than 75% of the prepared derivatives showed higher activity than nifurtimox. Compounds 5 and 11, hexyl 4-(5-nitrofurfurylidene)carbazate and N-hexyl 3-(5-nitrofuryl)propenamide, showed the highest in vitro trypanocidal effect reported to date for members of the nitrofuran family. Partition coefficients and energies for the single-electron reduction of compounds were theoretically determined. These properties could be not the major cause of the activities' differences. The physicochemical environment around E19, W22, C53 and Y111 residues within the trypanothione binding site of trypanothione reductase resulted a valuable target for the rational design of anti-trypanosomal drugs.

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Accession: 004098078

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PMID: 15110968

DOI: 10.1016/j.ejmech.2004.02.007


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