Inspired by the high antituberculous activity of novel nitro-substituted derivatives and based on promising predicted ADMET properties we have synthesized a series of 33 salicylanilides containing nitro-group in their salicylic part and evaluated them for their in vitro antimycobacterial, antimicrobial and antifungal activities. The presence of nitro-group in position 4 of the salicylic acid was found to be beneficial and the resulting molecules exhibited minimum inhibitory concentrations (MICs) ranging from 2 to 32 mu M against Mycobacterium tuberculosis. The best activity was found for 2-hydroxy-4-nitro-N-[4-(trifluoromethyl)phenyl] benzamide (MIC = 2 mu M). 4-Nitrosalicylanilides were also found to be active against all Staphylococcus species tested while for MRSA strain 2-hydroxy-4-nitro-N-[4-(trifluoromethyl)phenyl] benzamide's MIC was 0.98 mu M. None of the nitrosalicylanilides was active against Enterococcus sp. J 14365/08 and no considerable activity was found against Gram-negative bacteria or fungi. The hepatotoxicity of all nitrosalicylanilides was found to be in the range of their MICs for HepG2 cells. (C) 2015 Elsevier Ltd. All rights reserved.
Design and Synthesis of Novel Cyclooxygenase‐1 Inhibitors as Analgesics: 5‐Amino‐2‐ethoxy‐
<i>N</i>
‐(substituted‐phenyl)benzamides
inhibitory analgesic agent. 5‐Amino‐2‐ethoxy‐N‐(2‐ or 3‐substituted phenyl)benzamide derivatives exhibited analgesic activity in a murine acetic acid induced writhing test. Among these compounds, 5‐amino‐2‐ethoxy‐N‐(2‐methoxyphenyl)benzamide (9 v) possesses potent COX‐1 inhibitory and analgesic activities, similar to those of indomethacin. In addition, 5‐amino‐2‐ethoxy‐N‐(3‐trifluoromethylphenyl)benzamide