121632-90-4Relevant academic research and scientific papers
Design, synthesis and biological evaluation of novel FXIa inhibitors with 2-phenyl-1H-imidazole-5-carboxamide moiety as P1 fragment
Lei, Yu,Zhang, Bing,Zhang, Yan,Dai, Xiwen,Duan, Yulin,Mao, Qing,Gao, Jun,Yang, Yuwei,Bao, Ziyang,Fu, Xuefeng,Ping, Kunqi,Yan, Chengda,Mou, Yanhua,Wang, Shaojie
, (2021)
Factor XIa, as a blood coagulation enzyme, amplifies the generation of the last enzyme thrombin in the blood coagulation cascade. It was proved that direct inhibition of factor XIa could reduce pathologic thrombus formation without an enhanced risk of bleeding. WSJ-557, a nonpurine imidazole-based xanthine oxidase inhibitor in our previous reports, could delay blood coagulation during its animal experiments, which prompted us to investigate its action mechanism. Subsequently, during the exploration of the action mechanism, it was found that WSJ-557 exhibited weak in vitro factor XIa binding affinity. Under the guide of molecular modeling, we adopted molecular hybridization strategy to develop novel factor XIa inhibitors with WSJ-557 as an initial compound. This led to the identification of the most potent compound 44g with a Ki value of 0.009 μM, which was close to that of BMS-724296 (Ki = 0.0015 μM). Additionally, serine protease selectivity study indicated that compound 44g display a desired selectivity, more 400-fold than those of thrombin, factor VIIa and factor Xa in coagulation cascade. Moreover, enzyme kinetics studies suggested that the representative compound 44g acted as a competitive-type inhibitor for FXIa, and molecular modeling revealed that it could tightly bind to the S1, S1′ and S2′ pockets of factor XIa. Furthermore, in vivo efficacy in the rabbit arteriovenous shunt model suggested that compound 44g demonstrated dose-dependent antithrombotic efficacy. Therefore, these results supported that compound 44g could be a potential and efficacious agent for the treatment of thrombotic diseases.
DIPEPTIDE ANALOGS AS COAGULATION FACTOR INHIBITORS
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Page/Page column 101-102, (2009/01/23)
Disclosed are novel dipeptide analogs compounds of Formula (I), (II) or (III) or a stereoisomer, a tautomer, a pharmaceutically acceptable salt, a solvate, or a prodrug thereof, which are inhibitors of factor XIa and/or plasma kallikrein, compositions containing them, and methods of using them, for example, for the treatment or prophylaxis of thrombotic diseases.
