Synthesis and in-vitro antimicrobial activity of new 1,2,4-triazoles.
We have described the synthesis of new 1,2,4-triazoles and have evaluated their antimicrobial profile. Antitubercular activity was determined in triplicate using the Lowenstein-Jensen medium. A loopful of Mycobacterium tuberculosis suspension was inoculated on the surface of each Lowenstein-Jensen media containing the test compounds (100, 10 or 1 microg mL(-1)). To evaluate in-vitro antibacterial activity, compounds (50, 5 or 0.5 microg) were evaluated against B. subtilis, Escherichia coli, Pseudomonas aeruginosa, Staphylococcus aureus and Staphylococcus typhi by the disc diffusion method. To evaluate antifungal activity Sabourauds Dextrose agar medium was used. Some of the compounds (5, 0.5 or 0.05 microg mL(-1)) were screened for activity against Aspergillus niger 88 and Aspergillus niger 90 and others were screened for activity against T. rubrum TR1, T. rubrum R6, T. rubrum R7 and T. mentagrophyte M1, using the cup plate method. Our results show that the triazoles with a pyrazine moiety at position 3 were more active as antitubercular and antifungal agents compared with the triazoles which had a pyrazine moiety at position 4 of the molecule.
College of Pharmaceutical Sciences, Manipal, India.
A R
AR
Bhat
G V
GV
Bhat
G G
GG
Shenoy
D000900:Anti-Bacterial Agents / Q000138:chemical synthesis* / Q000494:pharmacology*; D000935:Antifungal Agents / Q000138:chemical synthesis / Q000494:pharmacology; D000995:Antitubercular Agents / Q000138:chemical synthesis / Q000494:pharmacology; D001419:Bacteria / Q000187:drug effects; D055598:Chemical Phenomena; D002627:Chemistry, Physical; D007202:Indicators and Reagents; D008826:Microbial Sensitivity Tests; D009169:Mycobacterium tuberculosis / Q000187:drug effects; D014230:Triazoles / Q000138:chemical synthesis* / Q000494:pharmacology*
D000900:Anti-Bacterial Agents; D000935:Antifungal Agents; D000995:Antitubercular Agents; D007202:Indicators and Reagents; D014230:Triazoles; C045575:1,2,4-triazole