Synthesis and Biological Study of Some Novel 4-[5-(4,6-Disubstituted-2-thiomethylpyrimidyl)-4′-amino-1,2,4- triazol-3′-yl] thioacetyl-3-arylsydnones

A series of 4-[5-(4,6-disubstituted-2-thiomethyl pyrimidyl)-4′-amino-1,2-4-triazol-3′-yl]thioacetyl-3-arylsydnones 7a–i were synthesized by the reaction of 5-(4,6-disubstituted-2-thiomethylpyrimidyl)-4-amino-3-mercapto-1,2-4-triazoles 3 with 3-aryl-4-bromoacetyl sydnones 6 in an ethanol medium. The newly synthesized compounds 7a–i were screened for their antibacterial activity against E. coli and Serratia marcesens and for antibacterial activity against Aspergillus niger and Pencillium. Most of the tested compounds showed significant antifungal activity particularly against Pencillium at 10-μg/mL concentration comparable with that of the standard drug Flukanazole.