Synthesis and Biological Evaluation of Some Heterocycles Containing Oxadiazole and Pyrazole Ring for Anti-Bacterial, Anti-Fungal and Anti-Tubercular Activities

Abstract

1, 3, 4-oxadiazoles were synthesized by treating pyrazine-2-carbohydrazide with CS2 and alc. KOH and their derivatives were prepared by using R-Cl compounds. pyrazolones were synthesized by treatingpyrazine-2-carbohydrazide with ethyl acetoacetate. The derivatives of pyrazolone were prepared by refluxing pyrazolone with formaldehyde and different substituted secondary amines. All the synthesized compounds were characterized by IR, 1H-NMR and elemental analysis and evaluated for antibacterial, antifungal and antitubercular activities.