Synthesis and biological activities of 3,6-disubstituted-1,2,4-triazolo-1,3,4- thiadiazole derivatives

  • L. Lin
  • H. Liu
  • D. J. Wang
  • Y. J. Hu
  • X. H. Wei
Keywords: Triazolothiadiazole, Triazole, Thiadiazole, Antimicrobial activity

Abstract

Twelve novel triazolothiadiazole derivatives were synthesized from 4-amino-5-substituted-4H-1,2,4-triazole-3-thiols with various aromatic carboxylic acids by cyclization in the presence of phosphorous oxychloride. All the newly synthesized compounds were characterized by FTIR, 1H NMR, mass spectroscopy and elemental analysis. The antimicrobial activities of the title compounds were examined by disc diffusion method against Escherichia coli, Staphylococcus aureus, Pyricularia oryzae and Rhizoctnia solani. The bioassay indicated all synthesized triazolothiadiazole derivatives possessed moderate to good antibacterial and antifungal activities against the tested organisms. Especially, compounds 2e and 2k exhibited excellent antibacterial and antifungal activities among these triazolothiadiazole derivatives.

               

KEY WORDS: Triazolothiadiazole, Triazole, Thiadiazole, Antimicrobial activity

 

Bull. Chem. Soc. Ethiop. 2017, 31(3), 481-489.

DOI: http://dx.doi.org/10.4314/bcse.v31i3.12

Published
2018-01-19
Section
Articles

Journal Identifiers


eISSN: 1726-801X
print ISSN: 1011-3924