- Structure-guided optimization of 1H-imidazole-2-carboxylic acid derivatives affording potent VIM-Type metallo-β-lactamase inhibitors
-
Production of metallo-β-lactamases (MBLs) in bacterial pathogens is an important cause of resistance to the ‘last-resort’ carbapenem antibiotics. Development of effective MBL inhibitors to reverse carbapenem resistance in Gram-negative bacteria is still needed. We herein report X-ray structure-guided optimization of 1H-imidazole-2-carboxylic acid (ICA) derivatives by considering how to engage with the active-site flexible loops and improve penetration into Gram-negative bacteria. Structure-activity relationship studies revealed the importance of appropriate substituents at ICA 1-position to achieve potent inhibition to class B1 MBLs, particularly the Verona Integron-encoded MBLs (VIMs), mainly by involving ingenious interactions with the flexible active site loops as observed by crystallographic analyses. Of the tested ICA inhibitors, 55 displayed potent synergistic antibacterial activity with meropenem against engineered Escherichia coli strains and even intractable clinically isolated Pseudomonas aeruginosa producing VIM-2 MBL. The morphologic and internal structural changes of bacterial cells after treatment further demonstrated that 55 crossed the outer membrane and reversed the activity of meropenem. Moreover, 55 showed good pharmacokinetic and safety profile in vivo, which could be a potential candidate for combating VIM-mediated Gram-negative carbapenem resistance.
- Yan, Yu-Hang,Li, Wenfang,Chen, Wei,Li, Chao,Zhu, Kai-Rong,Deng, Ji,Dai, Qing-Qing,Yang, Ling-Ling,Wang, Zhenling,Li, Guo-Bo
-
-
- INTEGRIN ANTAGONISTS
-
The present disclosure provides pharmaceutical agents, including those of the formula:(I) wherein the variables are defined herein. Also provided are pharmaceutical compositions, kits and articles of manufacture comprising such pharmaceutical agents. Meth
- -
-
Page/Page column 90
(2018/08/03)
-
- BETA AMINO ACID DERIVATIVES AS INTEGRIN ANTAGONISTS
-
Disclosed herein are novel pharmaceutical agents which are useful as integrin receptor antagonists that mediate the pathologic processes of angiogenesis and fibrosis and as such are useful in pharmaceutical compositions and in methods for treating conditions mediated by these integrins by inhibiting or antagonizing these integrins. The novel pharmaceutical agents include those of the formula: wherein the variables are defined herein. Also provided are pharmaceutical compositions, kits and articles of manufacture comprising such pharmaceutical agents. Methods and intermediates useful for making the pharmaceutical agents and methods of using the pharmaceutical agents are also provided.
- -
-
Page/Page column 198
(2014/02/15)
-
- (3-HYDROXY-4-AMINO-BUTAN-2-YL) -3- (2-THIAZOL-2-YL-PYRROLIDINE-1-CARBONYL) BENZAMIDE DERIVATIVES AND RELATED COMPOUNDS AS BETA-SECRETASE INHIBITORS FOR TREATING
-
The present invention provides novel beta-secretase inhibitors and methods for their use, including methods of treating of Alzheimer's disease. (Formula)
- -
-
Page/Page column 114
(2009/05/29)
-
- PYRROLIDINE DERIVATIVES AS TRYPTASE INHIBITORS
-
Compounds of a certain formula 1 in which M, B1, B2, R2, K1 and K2 have the meanings indicated in the description are novel effective tryptase inhibitors.
- -
-
Page/Page column 19
(2010/02/06)
-