1,5-Diphenylpyrrole Derivatives as Antimycobacterial Agents. Probing the Influence on Antimycobacterial Activity of Lipophilic Substituents at the Phenyl Rings
摘要:
Synthesis and biological evaluation of new derivatives of 1,5-bis(4-chlorophenyl)-2-methyl-3-(4-methylpipcrazin-1-yl)methyl-1H-pyrrole (BM 212, 16) are reported. Variously substituted phenyl rings with different substitution pattern and lipophilicity were added to the pyrrole nucleus to evaluate their influence on the activity toward Mycobacterium tuberculosis (MTB) and atypical mycobacteria. The most active derivatives showed activity between 0.125-0.5 mu g/mL (better than 16 and streptomycin) and protection index (64-256) higher than 16 (4) and similar to isoniazid and streptomycin (128).
1,5-Diphenylpyrrole Derivatives as Antimycobacterial Agents. Probing the Influence on Antimycobacterial Activity of Lipophilic Substituents at the Phenyl Rings
摘要:
Synthesis and biological evaluation of new derivatives of 1,5-bis(4-chlorophenyl)-2-methyl-3-(4-methylpipcrazin-1-yl)methyl-1H-pyrrole (BM 212, 16) are reported. Variously substituted phenyl rings with different substitution pattern and lipophilicity were added to the pyrrole nucleus to evaluate their influence on the activity toward Mycobacterium tuberculosis (MTB) and atypical mycobacteria. The most active derivatives showed activity between 0.125-0.5 mu g/mL (better than 16 and streptomycin) and protection index (64-256) higher than 16 (4) and similar to isoniazid and streptomycin (128).
Identification of a novel pyrrole derivative endowed with antimycobacterial activity and protection index comparable to that of the current antitubercular drugs streptomycin and rifampin
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.
1,5-Diphenylpyrrole Derivatives as Antimycobacterial Agents. Probing the Influence on Antimycobacterial Activity of Lipophilic Substituents at the Phenyl Rings
作者:Mariangela Biava、Giulio Cesare Porretta、Giovanna Poce、Alessandro De Logu、Manuela Saddi、Rita Meleddu、Fabrizio Manetti、Edda De Rossi、Maurizio Botta
DOI:10.1021/jm701560p
日期:2008.6.1
Synthesis and biological evaluation of new derivatives of 1,5-bis(4-chlorophenyl)-2-methyl-3-(4-methylpipcrazin-1-yl)methyl-1H-pyrrole (BM 212, 16) are reported. Variously substituted phenyl rings with different substitution pattern and lipophilicity were added to the pyrrole nucleus to evaluate their influence on the activity toward Mycobacterium tuberculosis (MTB) and atypical mycobacteria. The most active derivatives showed activity between 0.125-0.5 mu g/mL (better than 16 and streptomycin) and protection index (64-256) higher than 16 (4) and similar to isoniazid and streptomycin (128).