Abstract The paper describes the synthesis and antimicrobial (antileishmanial, antibacterial and antifungal) activity of some classical hydrazones of benzophenones and of 1, 2- diketones. N-(Diaryl) acyl derivatives of these hydrazones have also been synthesized and evaluated. 4, 4,-Demthoxybenzil monohydrazone and 4, 4′-dimethoxybenzophenone hydrazone showed significant antileishmanial activity. The effect of substituents on the ...