Synthesis and Anti-Mycobacterial Activity of N'-[(E)-(Disubstituted- Phenyl)Methylidene]Isonicotino-Hydrazide Derivatives

A series of eight N'-[(E)-(disubstituted-phenyl)methylidene]isonicotino-hydrazide derivatives were synthesized and evaluated for their in vitro antibacterial activity against Mycobacterium tuberculosis, and the activity expressed as the minimum inhibitory concentration (MIC) in mg/mL. Four compounds 2b-d and 2f exhibited a significant activity (0.6 mg/mL), when compared with first line drugs such as isoniazid (INH) and rifampin (RIP) and could be a good starting point to develop new lead compounds in the fight against multidrug resistant tuberculosis.