- Structure-guided optimization of 1H-imidazole-2-carboxylic acid derivatives affording potent VIM-Type metallo-β-lactamase inhibitors
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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
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- PYRROLO [2,3-B]PYRIDINE-3-CARBOXAMIDE COMPOSITIONS AND METHODS FOR AMELIORATING HEARING LOSS
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N-(3-Substituted thiazol-2(3H)-ylidene)-1H-pyrrolo[2,3-b]pyridine-3-carboxamides and N-(3-substituted oxazol-2(3H)-ylidene)-1H-pyrrolo[2,3-b]pyridine-3-carboxamides (I) and (II) are disclosed. The compounds activate Yap and inhibit Lats kinases. They are therefore useful for treating hearing loss.
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Paragraph 0077
(2021/08/13)
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- ATG7 INHIBITORS AND THE USES THEREOF
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Disclosed are chemical entities which are compounds of formula (I) : or a pharmaceutically acceptable salt thereof, wherein R1, R2, and Ra have the values described herein. Chemical entities according to the disclosure can be useful as inhibitors of ATG7. Further provided are pharmaceutical compositions comprising a chemical entity of the disclosure and methods of using the compositions in the treatment of cancer.
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- PYRIMIDONE COMPOUNDS USED AS LP-PLA2 INHIBITORS AND PHARMACEUTICAL COMPOSITIONS THEREOF
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The present invention relates to pyrimidone compounds used as Lp-PLA2 inhibitors and pharmaceutical compositions thereof. The structure of the pyrimidone compounds is represented by general formula (I), wherein R1, R2, Rs
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- ISOINDOLINONE AND PYRROLOPYRIDINONE DERIVATIVES AS AKT INHIBITORS
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The present invention provides isoindolinone and pyrrolopyridinone derivatives, as well as their compositions and methods of use, that inhibit the activity of the serine/threonine kinase, Akt, and are useful in the treatment of diseases related to the act
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- COMPOUNDS
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Disclosed are compounds that inhibit Lp-PLA2 activity, processes for their preparation, compositions containing them and their use in the treatment of diseases associated with the activity of Lp-PLA2, for example atherosclerosis, Alzheimer's disease, and/or diabetic macular edema.
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Page/Page column 37
(2012/06/30)
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- 7-Aminopyrazolo[1,5-a]pyrimidines as potent multitargeted receptor tyrosine kinase inhibitors
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7-Aminopyrazolo[1,5-a]pyrimidine urea receptor tyrosine kinase inhibitors have been discovered. Investigation of structure-activity relationships of the pyrazolo[1,5-a]pyrimidine nucleus led to a series of 6-(4-N,N′-diphenyl) ureas that potently inhibited
- Frey, Robin R.,Curtin, Michael L.,Albert, Daniel H.,Glaser, Keith B.,Pease, Lori J.,Soni, Niru B.,Bouska, Jennifer J.,Reuter, David,Stewart, Kent D.,Marcotte, Patrick,Bukofzer, Gail,Li, Junling,Davidsen, Steven K.,Michaelides, Michael R.
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experimental part
p. 3777 - 3787
(2009/04/07)
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