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Design, Synthesis, and Biological Evaluation of Isothiosemicarbazones with Antimycobacterial Activity

E. Novotná, K. Waisser, J. Kuneš, K. Palát, L. Skálová, B. Szotáková, V. Buchta, J. Stolaříková, V. Ulmann, M. Pávová, J. Weber, J. Komrsková, P. Hašková, I. Vokřál, V. Wsól,

. 2017 ; 350 (8) : . [pub] 20170621

Jazyk angličtina Země Německo

Typ dokumentu časopisecké články

Perzistentní odkaz   https://www.medvik.cz/link/bmc18024916

A series of benzaldehyde and salicylaldehyde-S-benzylisothiosemicarbazones was synthesized and tested against 12 different strains of mycobacteria, Gram-positive and Gram-negative bacteria, and the significant selectivity toward mycobacteria was proved. Twenty-eight derivatives were evaluated for the inhibition of isocitrate lyase, which is a key enzyme of the glyoxylate cycle necessary for latent tuberculosis infection, and their iron-chelating properties were investigated. Two derivatives, 5-bromosalicylaldehyde-S-(4-fluorobenzyl)-isothiosemicarbazone and salicylaldehyde-S-(4-bromobenzyl)-isothiosemicarbazone, influenced the isocitrate lyase activity and caused a better inhibition at 10 μmol/L than 3-nitropropionic acid, a standard inhibitor. The compounds were also found to act as exogenous chelators of iron, which is an obligate cofactor for many mycobacterial enzymes. Due to their low cytotoxicity, together with the activity against isocitrate lyase and the ability to sequester iron ions, the compounds belong to potential antibiotics with the main effect on mycobacteria.

Citace poskytuje Crossref.org

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