Synthesis, characterization and in vitro biological evaluation of some novel 1,3,5-triazine-Schiff base conjugates as potential antimycobacterial agents

A series of some novel 1,3,5-triazine-Schiff base conjugates (1-32) have been synthesized and evaluated for their in vitro antimycobacterial activity against Mycobacterium tuberculosis H37Rv using Alamar Blue assay and the activity expressed as the minimum inhibitory concentration (MIC) in μg/mL. Compounds 4 (4-Methoxy-6-methyl-N-(3,4,5-trimethoxybenzylidene)-1,3,5-triazin-2-amine), 11 (4-Methoxy-6-methyl-N-(2-hydroxy-3-bromo-5-chloro-benzylidene)-1,3,5-triazin-2-amine) and 24 (4-Methoxy-6-methyl-N-(1-(2,5-dihydroxyphenyl)ethylidene)-1,3,5-triazin-2-amine) exhibited a significant activity at 3.125, 6.25 and 6.25μg/mL, respectively, when compared with the antitubercular drugs such as ethambutol (3.125μg/mL), pyrazinamide (6.25μg/mL) and streptomycin (6.25μg/mL) and it could be a potential starting point to develop new lead compounds in the fight against Mycobacterium tuberculosis H37Rv.

1,3,5-Triazine–Schiff base conjugate; Alamar Blue assay; Antimycobacterial activity; Mycobacterium tuberculosis H37Rv.