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N-(7-Cyano-6-(4-fluoro-3-(2-(3-(trifluoromethyl)phenyl)acetamido)phenoxy) benzodthiazol-2-yl)cyclopropanecarboxamide (TAK-632) Analogues as Novel Necroptosis Inhibitors by Targeting Receptor-Interacting Protein Kinase 3 (RIPK3): Synthesis, Structure-Activity Relationships and In Vivo Efficacy.

08:00 EDT 16th May 2019 | BioPortfolio

Summary of "N-(7-Cyano-6-(4-fluoro-3-(2-(3-(trifluoromethyl)phenyl)acetamido)phenoxy) benzodthiazol-2-yl)cyclopropanecarboxamide (TAK-632) Analogues as Novel Necroptosis Inhibitors by Targeting Receptor-Interacting Protein Kinase 3 (RIPK3): Synthesis, Structure-Activity Relationships and In Vivo Efficacy."

Necroptosis, a form of programmed cell death, plays a critical role in various diseases, including inflammato-ry, infectious and degenerative diseases. We previously identified TAK-632 (6) as a potent inhibitor of necrop-tosis by targeting both RIPK1 and RIPK3 kinases. Herein, we performed three rounds of structural optimizations of TAK-632 and elucidated structure-activity relationships to generate more potent inhibitors by targeting RIPK3. The analogues with carbamide groups exhibited great anti-necroptotic activities and compound 42 showed >60-fold selectivity for RIPK3 than RIPK1. It blocked necrosome formation by specifically inhibiting the phosphorylation of RIPK3 in necroptotic cells. In a TNF-induced systemic inflammatory response syn-drome model, it significantly protected mice from hypothermia and death at a dose of 5 mg/kg, which was much more effective than TAK-632. Moreover, it showed favorable and drug-like pharmacokinetic properties in rats with an oral bioavailability of 25.2%. Thus, these RIPK3-targeting small molecules represent promising lead structures for further development.

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This article was published in the following journal.

Name: Journal of medicinal chemistry
ISSN: 1520-4804
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