A series of thiazole derivatives 1-4 were synthesized employing simple one-pot reaction pathway and characterized via Fourier Transform Infrared (FTIR), Proton Nuclear Magnetic Resonance (1H NMR), Ultraviolet-Visible (UV-Vis) and Gas Chromatography-Mass Spectrometry (GC-MS). The newly synthesized compounds were evaluated for their in vitro antimicrobial properties against several bacterial strains including Gram-positive and Gram-negative as well as fungus using broth microdilution method. The results revealed that all of the compounds exhibited good activity with a range of MIC values between 1.25-5.0 mg/mL. From the MIC and MBC results, compound 1 exhibited good activities with same MIC value of 1.25 mg/mL and MBC value of 5 mg/mL against B. cereus and S. flexneri. In order to support antimicrobial results, the molecular docking studies were carried out for inhibition of the GlcN-6-P synthase as the target. Out of four compounds underwent for molecular docking studies, 5-acetyl-4-methyl-2-(4-aminobiphenyl)-1,3-thiazole (1) shows the lowest minimum binding energy at -7.32 kcal/mol as compared to 2, 3 and 4 with -7.31, -7.20 and -6.76 kcal/mol, respectively which are in agreement with antimicrobial assay results. In conclusion, 2, 4, 5-trisubstituted- 1,3- thiazole derivatives could be considered as promising antimicrobial in drug discovery candidates.
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