Identification of a novel pyrrole derivative endowed with antimycobacterial activity and protection index comparable to that of the current antitubercular drugs streptomycin and rifampin
摘要:
A hit optimization procedure based on isosteric and bioisosteric replacement of decorating groups at both the N1 and the C5 phenyl rings of 1,5-diarylpyrroles led to identification of 4-((1-(4-fluorophenyl)-2-methyl- 5-(4-(methylthio) phenyl)-1H-pyrrol-3-yl) methyl) thiomorpholine that is characterized by a very high activity toward both Mycobacterium tuberculosis 103471 and H37Rv strains (MIC values of 0.125 mu g/mL), and a safe profile in terms of cytotoxicity (CC(50) of > 128 mu g/mL) and protection index (> 1000). Antitubercular activity and protection index of the new compound are comparable to those found for the current antitubercular drugs streptomycin and rifampin. (C) 2010 Elsevier Ltd. All rights reserved.