Synthesis, characterization and antimicrobial screening of thiazole based 1,3,4-oxadiazoles heterocycles

Abstract

In an effort to find a new pharmacologically dynamic molecule, we report here the synthesis and in vitro antimicrobial activity of various N-(4-methyl-5-(4-((substituted phenylamino) methyl)-5-thioxo-4,5-dihydro-1,3,4-oxadiazol-2-yl)thiazol-2-yl) benzamides. The structures of newly synthesized compounds were assigned on the bases of IR, 1H NMR, 13C NMR, and mass spectral data. Synthesized compounds were screened for their antibacterial and antifungal activities on gram-positive bacteria (Staphylococcus aureus and Streptococcus pyogenes), gram-negative bacteria (Escherichia coli and Pseudomonas aeruginosa) and three fungi (Candida albicans, Aspergillus niger and Aspergillus clavatus) by serial broth dilution method. Compounds 5e and 5k were associated with considerable potential antibacterial and compounds 5a and 5b antifungal activities.