Journal
EUROPEAN JOURNAL OF MEDICINAL CHEMISTRY
Volume 116, Issue -, Pages 187-199Publisher
ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER
DOI: 10.1016/j.ejmech.2016.03.060
Keywords
Tuberculosis; Benzo[d]thiazole-2-carboxamides; New antibacterial chemotypes; Anti-mycobacterial activity; COMFA; 3D-QSAR
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The benzoidlthiazol-2-yl(piperazin-1-yl)methanones scaffold has been identified as new anti-mycobacterial chemotypes. Thirty-six structurally diverse benzo[d]thiazole-2-carboxamides have been prepared and subjected to assessment of their potential anti-tubercular activity through in vitro testing against Mycobacterium tuberculosis H(37)Rv strain and evaluation of cytotoxicity against RAW 264.7 cell lines. Seventeen compounds showed anti-mycobacterial potential having MICs in the low (1-10) mu M range. The 5-trifluoromethyl benzo[d]thiazol-2-yl(piperazin-1-yl)methanones emerged to be the most promising resulting in six positive hits (2.35-7.94 mu M) and showed low-cytotoxicity (<50% inhibition at 50 mu g/mL). The therapeutic index of these hits is 8-64. The quantitative structure activity relationship has been established adopting a statistically reliable CoMFA model showing high prediction (r(pred)(2) = 0.718, r(ncv)(2) = 0.995). (C) 2016 Elsevier Masson SAS. All rights reserved.
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