Green Synthesis of Naphthyridine Derivatives and their Cytochrome Activity against Human Microsomal P450 1A2: Comparative Studies on Organic and Aqueous Media

In this work, the synthetic protocol of naphthyridine derivatives through one pot reaction using aqueous and organic solvents are reported. The cascade reaction of malononitrile dimer and aldehyde leads to the formation of 5,7-diamino-2-(dicyanomethyl)-4-(4-oxobutyl)-1,2,3,4-tetrahydro-1,6-naphthyridine-3,8-dicarbonitrile (3) in organic solvents in moderate yield. But the study shows the attractive features of using like elixir solvent ‘water’ as green solvent and ionic liquid as a catalyst to reduce chemical usage and environmentally malignant formation. The present investigation highlights to synthesize naphthyridine derivative 3 in a good yield using aqueous solvent in comparison to organic solvents because green solvents are highly eco-friendly approach, low cost and simple methodology. The structure of naphthyridine derivative 3 using water/catalyst was confirmed by spectral techniques, there are no changes with the spectral studies which were carried out in organic solvents but the yield was more in aqueous media when compared with naphthyridine derivatives in an organic solvent. The newly synthesized naphthyridine compound were evaluated for their cytochrome activity against Human Microsomal P450 1A2 enzyme, the results of molecular docking reveals that the compound perhaps chosen as clinical drug.