Background: A series of sixteen novel isatin analogs (3a-3p) have been synthesized and
evaluated for their antibacterial and antifungal activities against various pathogenic microorganisms.
Gram-positive bacterial strains: Staphylococcus aureus, Bacillus subtilis; Gram-negative bacterial
strains: Escherichia coli, Pseudomonas aeruginosa, Salmonella typhi, Klebsiella pneumonia, and fungal
strains Candida albicans, Aspergillus niger use two fold serial dilution method. Methods: Some of
the synthesized compounds showed promising antibacterial and antifungal activities among the series.
Results: Compound 3l shows the best antimicrobial activity which is substantiated by the highest docking
score. Conclusion: Structure activity relationships (SAR) as well as virtual ADMET studies were carried out and a
connection between activities, electronic and physicochemical properties of the target compounds was determined.
Keywords: Antimicrobial activity, in silico study, lipinski’s rule, Isatin, SAR study.
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