Synthesis and antibacterial activity studies of 2,4-di substituted furan derivatives

Abstract

2,4 disubstitiuted furan derivatives (8A–8M) were prepared from furan-4-carboxylic acid ethyl ester (1). Antibacterial activity of new 2,4 di substituted furan derivatives was studied against Gram (+) and Gram (−) bacteria. 8F, 8E, 8D and 8J were found to be effective against Gram (−) bacteria whereas, 8A and 8L were effective against Gram (+) bacteria. Least MIC value was found as 100 µg/ml against Escherichia coli (for 8D and 8F), and Proteus vulgaris (for 8E and 8F). Antibacterial activity is correlated with different substituents. Products exhibited better antibacterial activities especially towards Streptococcus pyogenes, Proteus vulgaris, and Escherichia coli. Keywords: Pathogens, Antibacterial activity, Structure-activity relationship, Disubstitiuted furans, Synthesis