Synthesis, characterisation, and antibacterial activity of some novel vanillin related hydrazone derivatives bearing 1,2,3-triazole ring

Abstract

Vanillin, hydrazone and 1,2,3-triazole containing functional groups derivatives demonstrate antibacterial activity. In the present work, we present synthesis of eight new vanillin related hydrazone derivatives bearing 1,2,3-triazole ring skeleton 9a–9e, 10a–10e obtained with high yields by the coupling of aldehydes 6 and 7 with substituted benzohydrazides 8a–8e in ethanol. IR, NMR and MS data and elemental analysis confirm the structures of products. All title compounds were evaluated in vitro for their antibacterial activity against a panel of Gram positive and Gram negative bacteria and compounds 9d and 10d exhibited high activity.