701. Synthesis of new 1,2,4-triazole[3,4-b][1,3,4]thiadiazoles bearing pyrazole as potent antimicrobial agents.
- Author
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Sanjeeva Reddy C, Sanjeeva Rao L, Rajesh Kumar G, and Nagaraj A
- Subjects
- Anti-Bacterial Agents chemistry, Anti-Bacterial Agents pharmacology, Antifungal Agents chemistry, Antifungal Agents pharmacology, Microbial Sensitivity Tests, Phosphorus Compounds chemistry, Temperature, Thiadiazoles chemical synthesis, Thiadiazoles pharmacology, Anti-Bacterial Agents chemical synthesis, Antifungal Agents chemical synthesis, Thiadiazoles chemistry, Triazoles chemistry
- Abstract
A new series of 6-(aryl/heteryl)-3-(5-methyl-1-phenyl-1H-4-pyrazolyl)[1,2,4]triazolo[3,4-b][1,3,4]thiadiazoles (7a-j) has been synthesized by the reaction of 4-amino-5-(5-methyl-1-phenyl-1H-4-pyrazolyl)-4H-1,2,4-triazol-3-yl-hydrosulfide (6) with POCl(3) and the corresponding aryl/heteryl carboxylic acid, in ethanol at reflux temperature for 12 h. All the synthesized compounds were tested for in vitro activities against certain strains of bacteria such as Staphylococcus aureus, Bacillus subtilis, Escherichia coli and fungi such as Aspergillus niger, Aspergillus nodulans, Alternaria alternate. Compounds having 4-chlorophenyl (7d), 4-aminophenyl (7f), 4-nitrophenyl (7h) and 3-pyridyl (7i) substituents at 6-position of thiadiazole ring, showed marked inhibition of bacterial and fungal growth nearly equal to the standards. The other new compounds also showed appreciable activity against the test bacteria and fungi.
- Published
- 2010
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