Journal
JOURNAL OF MOLECULAR STRUCTURE
Volume 1250, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.molstruc.2021.131855
Keywords
Isatin-1,2,3-triazole; Azide-alkyne cycloaddition; Antimicrobial; Molecular docking
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Antibiotic resistance poses a severe threat to humanity, prompting researchers to synthesize a series of isatin-1,2,3-triazole hybrids and evaluate their antimicrobial activity. The most active derivative displayed stronger activity against Gram-negative bacteria and showed potential for binding to specific enzymes via various interactions.
Antibiotic resistance is rapidly evolving at an alarming rate, posing a severe threat to humanity. In an effort to develop compounds with antimicrobial activity, we synthesized a series of isatin-1,2,3-triazole hybrids 12-21 using the copper(I)-catalyzed azide-alkyne cycloaddition (CuAAC) reactions. Structural verification of the new isatin-1,2,3-triazole hybrids was accomplished using a variety of spectroscopic characterization techniques. The novel hybrids were evaluated for their in vitro antimicrobial activity against different pathogenic bacteria and fungi species using both agar well and disc-diffusion assays. Ampicillin and Nystatin were used as standard reference antimicrobial drugs. The antimicrobial evaluation revealed that the most active derivative is isatin-1,2,3-triazole 21. Moreover, the tested compounds are more active against Gram-negative bacteria than Gram-positive bacteria. Molecular docking revealed that compound 21 could bind to the active sites of D-alanine-D-alanine ligase and dihydrofolate reductase via multiple H-bonds, pi-pi, and CH-pi interactions. (C) 2021 Elsevier B.V. All rights reserved.
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