Abstract
In the present study a new series of antibacterial agents (4a-f) was designed, synthesized and evaluated for antibacterial activity against different gram positive (Staphylococcusaureus, Staphylococcus epidermidis, Bacillus cereus) and gram negative (listeria monocytogenes, Escherichia coli, Pseudomonas aeroginosa) bacteria. New derivatives of oxadiazoles were prepared by one-pot reaction of N-isocyanoiminotriphenylphosphorane, carboxylic acid derivatives and 2-pyridinecarboxaldehyde, in the presence of acetonitrile solvent. The broth macro dilution and well agar diffusion methods were used for determination of inhibition zone (IZ) and minimum inhibitory concentration (MIC) during preliminary evaluation of antimicrobial activity. The (MIC) values of tested compounds revealed that all compounds have displayed significant antibacterial activity against Staphylococcusaureus and Staphylococcus epidermidis (with MIC values in the range of 31 to 125µg/mL).
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