Synthesis and Antimicrobial Activity of Some Novel Hydrazide, Pyrazole, Triazine, Isoxazole, and Pyrimidine Derivatives

In continuation of our efforts to find a new class of antimicrobial agents , a series of pyrazole, 1,2,4‐triazine, isoxazole, pyrimidine, and other related products containing a hydrazide moiety were prepared via the reaction of 2‐cyano‐ N ‐((2‐methoxynaphthalen‐1‐yl)methylene) acetohydrazide ( 1 ) with appropriate chemical reagents. These compounds were evaluated for their antimicrobial activities, and also their minimum inhibitory concentration against most of test organisms was performed. Among the tested compounds 4 , 5 , 6 , and 16 displayed excellent antimicrobial activity . All the synthesized products were confirmed by elemental analysis, IR, 1 H‐NMR, 13 C‐NMR, and mass spectral data.