Design, Parallel Synthesis, and Crystal Structures of Pyrazinone Antithrombotics as Selective Inhibitors of the Tissue Factor VIIa Complex
摘要:
Structure-based drug design (SBDD) and polymer-assisted solution-phase (PASP) library synthesis were used to develop a series of pyrazinone inhibitors of the Tissue Factor/Factor Vlla (TF/VIIa) complex. The crystal structure of a tripeptide-alpha-ketothiazole complexed with TF/VIIa was utilized in a docking experiment to identify the pyrazinone core as a starting scaffold. The pyrazinone core could orient the substituents in the correct spatial arrangement to probe the S-1, S-2, and S-3 pockets of the enzyme. A multistep PASP library synthesis was designed to prepare the substituted pyrazinones varying the P-1, P-2, and P-3 moieties. Hundreds of pyrazinone TF/VIIa inhibitors were prepared and tested in several serine protease enzyme assays involved in the coagulation cascade. The inhibitors exhibited modest activity on TF/ VIIa with excellent selectivity over thrombin (Ha) and Factor Xa. The structure-activity relationship of the pyrazinone inhibitors will be discussed and X-ray crystal structures of selected compounds complexed with the TF/VIIa enzyme will be described. This study ultimately led to the synthesis of compound 34, which exhibited 16 nM (IC50) activity on TF/VIIa with >6250x selectivity vs Factor Xa and thrombin. This potent and highly selective inhibitor of TF/VIIa was chosen for preclinical, intravenous proof-of-concept studies to demonstrate the separation between antithrombotic efficacy and bleeding side effects in a nonhuman primate model of electrolytic-induced arterial thrombosis.
[EN] MASP-2 INHIBITORS AND METHODS OF USE<br/>[FR] INHIBITEURS DE MASP-2 ET PROCÉDÉS D'UTILISATION
申请人:OMEROS CORP
公开号:WO2021113686A1
公开(公告)日:2021-06-10
The present disclosure provides, inter alia, compounds with MASP-2 inhibitory activity, compositions of such compounds, and methods of making and using such compounds.
Structure-based drug design of pyrazinone antithrombotics as selective inhibitors of the tissue factor VIIa complex
作者:Michael S. South、Brenda L. Case、Rhonda S. Wood、Darin E. Jones、Michael J. Hayes、Thomas J. Girard、Rhonda M. Lachance、Nancy S. Nicholson、Michael Clare、Anna M. Stevens、Roderick A. Stegeman、William C. Stallings、Ravi G. Kurumbail、John J. Parlow
DOI:10.1016/s0960-894x(03)00410-4
日期:2003.7
Structure-based drug design coupled with polymer-assisted solution-phase library synthesis was utilized to develop a series of pyrazinone inhibitors of the tissue factor/Factor Vila complex. The crystal structure of a tri-peptide ketothiazole complexed with TF/VIIa was utilized in a docking experiment that identified a benzyl-substituted pyrazinone as a P-2 surrogate for the tri-peptide. A 5-step PASP library synthesis of these aryl-substituted pyrazinones was developed. The sequence allows for attachment of a variety of P-1 and P-3 moieties, which led to synthesis pyrazinone 23. Compound 23 exhibited 16 nM IC50 against TF/VIIa with > 6250x selectivity versus Factor Xa and thrombin. This potent and highly selective inhibitor of TF/VIIa was chosen for preclinical intravenous proof-of-concept studies to demonstrate the separation between antithrombotic efficacy and bleeding side effects in a primate model of thrombosis. (C) 2003 Elsevier Science Ltd. All rights reserved.
SUBSTITUTED POLYCYCLIC ARYL AND HETEROARYL PYRAZINONES USEFUL FOR SELECTIVE INHIBITION OF THE COAGULATION CASCADE
申请人:Pharmacia Corporation
公开号:EP1202975A1
公开(公告)日:2002-05-08
MASP-2 INHIBITORS AND METHODS OF USE
申请人:Omeros Corporation
公开号:US20210179612A1
公开(公告)日:2021-06-17
The present disclosure provides, inter alia, compounds with MASP-2 inhibitory activity, compositions of such compounds, and methods of making and using such compounds.