SYNTHESIS, AND EVALUATION OF COUMARIN HYBRIDS AS ANTIMYCOBACTERIAL AGENTS
摘要:
A series of twelve hybrid coumarin analogs were synthesized and screened through HTS for their antimycobacterial activity against Mtb H37Rv. The hybrid molecules were efficiently synthesized by the reactions of 3-(bromoacetyl)coumarin with Biginelli products 2-mercapto-6-oxo-4-aryl-1,6-dihydropyrimidine-5-carbonitriles. Of the resulting twelve hybrids, the two compounds 7-(2,4-dichlorophenyl)-5-oxo-3-(2-oxo-2H-chromen-3-yl)-5H-thiazolo[3,2-a] pyrimidine-6-carbonitrile (3d) and 7-(4-nitrophenyl)-5-oxo-3-(2-oxo-2H-chromen-3-yl)-5H-thiazolo[3,2-a]pyrirnidine-6-carboniaile (3f) showed excellent antimycobacterial activity against Mg, (EC50 3.19 & 7.91 mu M, respectively) and low cytotoxicity against the VERO cell line (IC50 > 62.5 mu g/mL).
作者:Weixuan Chen、Ying-ju Huang、Sushma Reddy Gundala、Hsiuchin Yang、Minyong Li、Phang C. Tai、Binghe Wang
DOI:10.1016/j.bmc.2009.12.074
日期:2010.2
SecA ATPase is a critical member of the Sec family, which is important in the translocation of membrane and secreted polypeptides/proteins in bacteria. Small molecule inhibitors can be very useful research tools as well as leads for future antimicrobial agent development. Based on previous virtual screening work, we optimized the structures of two hit compounds and obtained SecA ATPase inhibitors with IC50 in the single digit micromolar range. These represent the first low micromolar synthetic inhibitors of bacterial SecA and will be very useful for mechanistic studies. (C) 2010 Elsevier Ltd. All rights reserved.