Development of New Cyclic Plasmin Inhibitors with Excellent Potency and Selectivity
摘要:
The trypsin-like serine protease plasmin is a target for the development of antifibrinolytic drugs for use in cardiac surgery with cardiopulmonary bypass or organ transplantations to reduce excessive blood loss. The optimization of our recently described substrate-analogue plasmin inhibitors, which were cyclized between their P3 and P2 side chains, provided a new series with improved efficacy and excellent selectivity. The most potent inhibitor 8 binds to plasmin with an inhibition constant of 0.2 nM, whereas K-i values >1 mu M were determined for nearly all other tested trypsin-like serine proteases, with the exception of trypsin, which is also inhibited in the nanomolar range. Docking studies revealed a potential binding mode in the widely open active site of plasmin that explains the strong potency and selectivity profile of these inhibitors. The dialkylated piperazine-linker segment contributes to an excellent solubility of all analogues. Based on their overall profile the presented inhibitors are well suited for further development as injectable antifibrinolytic drugs.
The invention provides methods of making and using compounds of the formula shown, which are inhibitors of human plasmin and plasma kallikrein. (Formula I) The compounds are useful for the prevention of blood loss, and as components of fibrin adhesives.
[EN] SERINE PROTEASE INHIBITORS<br/>[FR] INHIBITEURS DE LA SÉRINE PROTÉASE
申请人:MEDICINES CO LEIPZIG GMBH
公开号:WO2012004678A3
公开(公告)日:2012-03-08
US8921319B2
申请人:——
公开号:US8921319B2
公开(公告)日:2014-12-30
US9133194B2
申请人:——
公开号:US9133194B2
公开(公告)日:2015-09-15
[DE] ZYKLISCHE TRIPEPTIDMIMETIKA ALS PLASMIN INHIBITOREN<br/>[EN] CYCLIC TRIPEPTIDE MIMETICS AS PLASMIN INHIBITORS<br/>[FR] TRIPEPTIDOMIMÉTIQUES CYCLIQUES UTILISÉS EN TANT QU'INHIBITEURS DE PLASMINE
申请人:UNIV MARBURG PHILIPPS
公开号:WO2013004845A1
公开(公告)日:2013-01-10
Die Erfindung betrifft Peptidmimetika aus den Resten P4-P3-P2-P1, die zwischen den Seitenketten der P3- und P2-Aminosäuren zyklisiert wurden und als Hemmstoffe der Serinprotease Plasmin geeignet sind, die Fibrinolyse zu hemmen und dadurch den Blutverlust bei hyperfibrinolytischen Zuständen, beispielsweise bei Operationen, zu reduzieren.