SAR-Based Optimization of a 4-Quinoline Carboxylic Acid Analogue with Potent Antiviral Activity
作者:Priyabrata Das、Xiaoyi Deng、Liang Zhang、Michael G. Roth、Beatriz M. A. Fontoura、Margaret A. Phillips、Jef K. De Brabander
DOI:10.1021/ml300464h
日期:2013.6.13
It is established that drugs targeting viral proteins are at risk of generating resistant strains. However, drugs targeting host factors can potentially avoid this problem. Herein, we report structure-ctivity relationship studies leading to the discovery of a very potent lead compound 6-fluoro-2-(5-isopropyl-2-methyl-4-phenoxyphenyl) quinoline -4-carboxylic acid (C44) that inhibits human dihydroorotate dehydrogenase (DHODH) with an IC50 of 1 nM and viral replication of VSV and WSN-Influenza with an EC50 of 2 nM and 41 nM. We also solved the X-ray structure of human DHODH bound to C44, providing structural insight into the potent inhibition of biaryl ether analogues of brequinar.
Synthesis, characterization and antimicrobial studies of some new quinoline incorporated benzimidazole derivatives
作者:B. Garudachari、M.N. Satyanarayana、B. Thippeswamy、C.K. Shivakumar、K.N. Shivananda、Gurumurthy Hegde、Arun M. Isloor
DOI:10.1016/j.ejmech.2012.05.027
日期:2012.8
Two new series of quinoline incorporated benzimidazole derivatives (4a–i and 8a–f) were synthesized from substituted aniline and isatin through multi-step reaction. 6-substituted-4-carboxyquinolines (3a,b and 7) were synthesized by multi component one pot reactions (via Doebner reaction and Pfitzinger reaction respectively) and the targeted benzimidazole derivatives were obtained by the reaction of