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Journal Article
Research Support, N.I.H., Extramural
Research Support, Non-U.S. Gov't
The antitubercular activity of various nitro(triazole/imidazole)-based compounds.
Bioorganic & Medicinal Chemistry 2017 November 2
Twenty three 3-nitrotriazole- and five nitroimidazole-based compounds, mostly amides, were screened for antitubercular activity against Mycobacterium tuberculosis H37 Rv (Mtb H37 Rv) under aerobic or low oxygen conditions, intracellular activity in murine J774 macrophages or THP-1 cells, activity against resistant Mtb strains as well as cytotoxicity in normal cells. Compounds with a Minimum Inhibitory Concentration (MIC) less than 10μM and 10-50μM were characterized as active and moderately active, respectively, whereas compounds with a MIC >50μM were characterized inactive. Fifteen 3-nitrotriazole-based compounds were active or moderately active against aerobic Mtb and thirteen of them were bactericidal, however, only four 3-nitrotriazoles were moderately active against anaerobic Mtb. All examined 2-nitroimidazole-based compounds were inactive against aerobic Mtb, and from the ones examined against anaerobic Mtb, only one was found moderately active. All examined compounds demonstrated intracellular activity and lack of cross-resistance. The five active 3-nitrotriazoles demonstrated good selectivity for Mtb. In conclusion, these classes of 3-nitrotriazole-based compounds merit further investigation as potential antitubercular agents.
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