ChemInform Abstract: Design, Synthesis and in vitro Antimicrobial Evaluation of Novel Imidazo[1,2-a]pyridine and Imidazol[2,1-b][1,3]benzothiazole Motifs.

ChemInform ◽  
2011 ◽  
Vol 42 (31) ◽  
pp. no-no
Author(s):  
Taleb H. Al-Tel ◽  
Raed A. Al-Qawasmeh ◽  
Rania Zaarour
2021 ◽  
Vol 45 (11-12) ◽  
pp. 1093-1099
Author(s):  
Abdulrhman Alsayari ◽  
Yahya I Asiri ◽  
Abdullatif Bin Muhsinah ◽  
Mohd. Zaheen Hassan

We report the design, synthesis, and in vitro antimicrobial evaluation of functionalized pyrazoles containing a hydrazono/diazenyl moiety. Among these newly synthesized derivatives, 4-[2-(4-chlorophenyl)hydrazono]-5-methyl-2-[2-(naphthalen-2-yloxy)acetyl]-2,4-dihydro-3 H-pyrazol-3-one is a promising antimicrobial agent against Staphylococcus aureus (minimum inhibitory concentration 0.19 μg mL−1). Structure–activity relationship studies reveal that the electronic environment on the distal phenyl ring has a considerable effect on the antimicrobial potential of the hybrid analogues. Molecular docking studies into the active site of S. aureus dihydrofolate reductase also prove the usefulness of hybridizing a pyrazole moiety with azo and hydrazo groups in the design of new antimicrobial agents.


Molecules ◽  
2020 ◽  
Vol 25 (6) ◽  
pp. 1339 ◽  
Author(s):  
Islam H. El Azab ◽  
Nadia A.A. Elkanzi

A series of 34 new pyrimido[2,1-c][1,2,4]triazine-3,4-diones were synthesized and fully characterized using IR, NMR, MS, and microanalytical analysis. In vitro investigation of 12 compounds of this series revealed promising antimicrobial activity of the conjugates 15a and 15f–j that were tagged with electron-withdrawing groups, with sensitivities ranging from 77% to as high as 100% of the positive control. The investigation of antimicrobial activity included Bacillus subtilis ATCC 6633, Staphylococcus aureus ATCC 6535, Pseudomonas aeruginosa ATCC 27853, and Escherichia coli ATCC 8739 (EC), and fungal strains Candida albicans ATCC 10231 and Aspergillus brasiliensis ATCC 16404.


2018 ◽  
Vol 15 (4) ◽  
pp. 839-853 ◽  
Author(s):  
Anna Pachuta-Stec ◽  
Barbara Rajtar ◽  
Anna Biernasiuk ◽  
Zbigniew Karczmarzyk ◽  
Łukasz Świątek ◽  
...  

2018 ◽  
Vol 18 (17) ◽  
pp. 1506-1513 ◽  
Author(s):  
Kashmiri Lal ◽  
Lokesh Kumar ◽  
Ashwani Kumar ◽  
Anil Kumar

Background: Oxazolones and 1,2,3-triazoles are among the extensively studied heterocycles in medicinal chemistry. Both of these moieties are reported to possess a broad spectrum of biological activity including antimicrobial. Objective: The objective of the current work is to design, synthesize and antimicrobial evaluation of some new oxazolone-1,2,3-triazole hybrids. Methods: The designed oxazolone-1,2,3-triazole hybrids were synthesized using copper(I)-catalyzed azide-alkyne cycloaddition. The antimicrobial evaluation was carried out using serial dilution method. Results: Most of the synthesized hybrids showed significant antimicrobial properties. Some of the compounds were found to be possessing better or comparable activity to that of the standards used. The docking simulations results are also in agreement with the antimicrobial activity data. Conclusion: Sixteen new hybrids were synthesized and tested in vitro for their antimicrobial activity. Some of the tested compounds exhibited promising antimicrobial activity and could be utilized for the development of the lead compounds for new and more potent antimicrobial drugs.


2013 ◽  
Vol 2013 ◽  
pp. 1-9 ◽  
Author(s):  
Sankari Kanakaraju ◽  
P. Sagar Vijay Kumar ◽  
Bethanamudi Prasanna ◽  
G. V. P. Chandramouli

A series of novel pyranochromene-containing tetrazoles fused with pyrimidinethiones, pyrimidines, and diazepines 3a–f, 4a–f, and 5a–f were synthesized by condensation of the corresponding tetrazoles 2a–f with carbon disulfide, benzaldehyde, and 4-methoxy phenacyl bromide, respectively. The compound 2a–f was obtained by reaction of pyrano[3,2-c]chromenes 1a–f with sodium azide. The structures of the newly synthesized compounds 2a–f to 5a–f were established on the basis of their elemental analyses, IR, 1H NMR, 13C NMR, and mass spectral data. All of the title compounds were subjected to in vitro antibacterial testing against four pathogenic strains and antifungal screening against two fungi. Preliminary results indicate that some of them exhibited promising activities and that they deserve more consideration as potential antimicrobials.


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