Macrocyclic Inhibitors Targeting the Prime Site of the Fibrinolytic Serine Protease Plasmin.

Autor: Wiedemeyer SJA; Department of Pharmacy, Institute of Pharmaceutical Chemistry, Philipps University Marburg, Marbacher Weg 6, D-35032, Marburg, Germany., Wu G; Biomedicine Discovery Institute, Department of Biochemistry and Molecular Biology, Monash University, Melbourne, 3800, Australia., Lang-Henkel H; Department of Pharmacy, Institute of Pharmaceutical Chemistry, Philipps University Marburg, Marbacher Weg 6, D-35032, Marburg, Germany., Whisstock JC; Biomedicine Discovery Institute, Department of Biochemistry and Molecular Biology, Monash University, Melbourne, 3800, Australia., Law RHP; Biomedicine Discovery Institute, Department of Biochemistry and Molecular Biology, Monash University, Melbourne, 3800, Australia., Steinmetzer T; Department of Pharmacy, Institute of Pharmaceutical Chemistry, Philipps University Marburg, Marbacher Weg 6, D-35032, Marburg, Germany.
Jazyk: angličtina
Zdroj: ChemMedChem [ChemMedChem] 2024 Dec 02; Vol. 19 (23), pp. e202400360. Date of Electronic Publication: 2024 Sep 30.
DOI: 10.1002/cmdc.202400360
Abstrakt: Two series of macrocyclic inhibitors addressing the S1 pocket and the prime site of the fibrinolytic serine protease plasmin have been developed. In the first series, a P1 tranexamoyl residue was coupled to 4-aminophenylalanine in P1' position, which provided moderately potent inhibitors with inhibition constants around 1 μM. In the second series, a substituted biphenylalanine was incorporated as P1' residue leading to approximately 1000-fold stronger plasmin inhibitors, the best compounds possess subnanomolar inhibition constants. The most effective compounds already exhibit a certain selectivity as plasmin inhibitors compared to other trypsin-like serine proteases such as trypsin, plasma kallikrein, thrombin, activated protein Ca, as well as factors XIa and Xa. For inhibitor 28 of the second series, the co-crystal structure in complex with a Ser195Ala microplasmin mutant revealed that the P2' residue adopts multiple conformations. Most polar contacts to plasmin and surrounding water molecules are mediated through the P1 tranexamoyl residue, whereas the bound conformation of the macrocycle is mainly stabilized by two intramolecular hydrogen bonds.
(© 2024 The Authors. ChemMedChem published by Wiley-VCH GmbH.)
Databáze: MEDLINE
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