Development of New Cyclic Plasmin Inhibitors with Excellent Potency and Selectivity
作者:Sebastian M. Saupe、Stephanie Leubner、Michael Betz、Gerhard Klebe、Torsten Steinmetzer
DOI:10.1021/jm3012917
日期:2013.2.14
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.
Photoactivatable peptides based on BMS-197525: A potent antagonist of the human thrombin receptor (PAR-1)
作者:John T. Elliott、William J. Hoekstra、Bruce E. Maryanoff、Glenn D. Prestwich
DOI:10.1016/s0960-894x(98)00730-6
日期:1999.1
Photoactivatable analogs of the human thrombin receptor (PAR-1) antagonist, N-trans-cinnamoyl-p-fluoroPhe-p-guanidinoPhe-Leu-Arg-NH2 (BMS-197525), were prepared with benzophenone substitutions in the N-terminal, Leu, or Arg position. The analogs retained antagonist activity (with reduced potency); the tritium-labeled isotopomers are potential photoaffinity labels for the receptor. C-Terminal extension of the analogs with ornithine(biotin) did not significantly alter antagonist potency. (C) 1999 Elsevier Science Ltd. All rights reserved.
Molecular recognition in macroporous polymers prepared by a substrate analog imprinting strategy
作者:Boerje Sellergren、Lars Andersson
DOI:10.1021/jo00297a074
日期:1990.5
METWALLY, S. A.;COENEN, H. H.;STOCKLIN, G., BULL. CHEM. SOC. JAP., 60,(1987) N 12, 4437-4440