Journal
JOURNAL OF THE IRANIAN CHEMICAL SOCIETY
Volume 19, Issue 5, Pages 1641-1650Publisher
SPRINGER
DOI: 10.1007/s13738-021-02403-9
Keywords
1,2,3-Triazole-ketones; (Benzyloxy)benzaldehyde; Pyrazolines; Antibacterial activity
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Funding
- DST
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A novel series of pyrazoline analogues linked by 1,2,3-triazole were synthesized and characterized by various analytical techniques. The synthesized compounds were evaluated for their antibacterial activities against both Gram-positive and Gram-negative strains, showing strong inhibition against Pseudomonas aeruginosa and Staphylococcus aureus by specific substituents.
A novel series of 1,2,3-triazole-linked pyrazoline analogues were prepared by the reaction of 3-(4-(benzyloxy)phenyl)-1-(1(arylphenyl)-5-methyl-1H-1,2,3-triazol-4-yl)prop-2-en-1-one with hydrazine hydrate in the presence of glacial acetic acid medium. The structures of the newly synthesized pyrazoline derivatives were established by elemental analysis, FT-IR, H-1 NMR, C-13{H-1} NMR, and mass spectral analysis. In addition, synthesized compounds DFT calculations and 3D structures of the synthesized compounds were performed using Gaussian 09 software, hybrid models and MM2 force techniques were used to obtain energy minimized structures. The antibacterial activities of the synthesized pyrazolines were determined against Gram-positive and Gram-negative strains. Among them, compounds with meta-chloro substitution on phenyl ring of pyrazoline showed the highest magnitude of inhibition against Pseudomonas aeruginosa and bromo substitution on para position of phenyl ring exhibited highest magnitude of inhibition against Staphylococcus aureus.
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