- Design, synthesis, and evaluation of potent RIPK1 inhibitors with in vivo anti-inflammatory activity
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RIPK1 plays a key role in the necroptosis pathway that regulates inflammatory signaling and cell death in various diseases, including inflammatory and neurodegenerative diseases. Herein, we report a series of potent RIPK1 inhibitors, represented by compound 70. Compound 70 efficiently blocks necroptosis induced by TNFα in both human and mouse cells (EC50 = 17–30 nM). Biophysical assay demonstrates that compound 70 potently binds to RIPK1 (Kd = 9.2 nM), but not RIPK3 (Kd > 10,000 nM). Importantly, compound 70 exhibits greatly improved metabolic stability in human and rat liver microsomes compared to compound 6 (PK68), a RIPK1 inhibitor reported in our previous work. In addition, compound 70 displays high permeability in Caco-2 cells and excellent in vitro safety profiles in hERG and CYP assays. Moreover, pre-treatment of 70 significantly ameliorates hypothermia and lethal shock in SIRS mice model. Lastly, compound 70 possesses favorable pharmacokinetic parameters with moderate clearance and good oral bioavailability in SD rat. Taken together, our work supports 70 as a potent RIPK1 inhibitor and highlights its potential as a prototypical lead for further development in necroptosis-associated inflammatory disorders.
- Li, Zhanhui,Hao, Yongjin,Yang, Chengkui,Yang, Qing,Wu, Shuwei,Ma, Haikuo,Tian, Sheng,Lu, Haohao,Wang, Jingrui,Yang, Tao,He, Sudan,Zhang, Xiaohu
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- Rational Design, Synthesis and Evaluation of Novel C6-Bicycloalkaneimidazole Containing Imidazo[1,2-b]pyridazines for ASK1 Inhibition
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Apoptosis signal-regulating kinase 1 (ASK1) is a member of mitogen-activated protein kinase kinase kinase (MAP3K) family that involves downstream phosphorylation of MAP kinases, c-Jun N-terminal kinases, and p38 MAP kinases. ASK1 inhibitors could possibly be beneficial for ameliorating the development and progression of diseases. Especially, ASK1 has been of interest as one of therapeutic targets for nonalcoholic fatty liver disease as the most common chronic liver diseases including simple steatosis and nonalcoholic steatohepatitis. In this manuscript, novel ASK1 inhibitor lead KTA-29 which has an imidazo[1,2-b]pyridazine core with novel C6-bicycloheptaneimidazole is disclosed. With the novel imidazo[1,2-b]pyridazine core, structure-activity-relationship study for ASK1 potency is described and KTA-29 affinity toward ASK1 with molecular modeling study is explained.
- Lee, Yujin,Jang, Jiyoon,Bibi, Maimoona,Duggirala, Krishna Babu,Ji, Sang Hee,Lee, Ji Hun,Ahn, Sunjoo,Song, Jin Sook,Chae, Chong Hak,Kim, Seong Hwan,Lee, Kwangho
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p. 872 - 877
(2021/05/10)
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- AMINOIMIDAZOPYRIDINES AS KINASE INHIBITORS
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Compounds having formula (I), and enantiomers, and diastereomers, stereoisomers, pharmaceutically-acceptable salts thereof, (I) are useful as kinase modulators, including RIPK1 modulation. All the variables are as defined herein.
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Page/Page column 91-92
(2019/05/22)
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- FUSED BICYCLIC COMPOUNDS AS INHIBITORS FOR PI3 KINASE
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The invention relates to compounds of formula (I) for the regulation of phosphoinositides 3-kinases activity and related diseases.
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Page/Page column 163-164
(2010/09/18)
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- Inhibitors of PI3 kinase
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The present invention relates to compounds of Formula I, or a pharmaceutically acceptable salt thereof, that inhibit phosphoinositide 3-kinase; methods of treating diseases or conditions, such as cancer, using the compounds; and pharmaceutical compositions containing the compounds.
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Page/Page column 20
(2009/07/10)
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- BICYCLIC HETEROARYL COMPOUNDS AND THEIR USE AS KINASE INHIBITORS
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Phosphatidylinositol (PI) 3-kinase inhibitor compounds, their pharmaceutically acceptable salts, and prodrugs thereof; compositions of the new compounds, either alone or in combination with at least one additional therapeutic agent, with a pharmaceutically acceptable carrier; and uses of the new compounds, either alone or in combination with at least one additional therapeutic agent, in the prophylaxis or treatment of proliferative diseases characterized by the abnormal activity of growth factors, protein serine/threonine kinases, and phospholipid kinases.
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Page/Page column 75
(2009/03/07)
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- PI-3 KINASE INHIBITORS AND METHODS OF THEIR USE
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Phosphatidylinositol (PI) 3 kinase inhibitor compounds, their pharmaceutically acceptable salts, and prodrugs thereof; compositions of the new compounds, either alone or in combination with at least one additional therapeutic agent, with a pharmaceuticall
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Page/Page column 63
(2010/11/28)
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