Investigation of mechanism-based thrombin inhibitors: Implications of a highly conserved water molecule for the binding of coumarins within the S pocket
作者:Raphaël Frédérick、Caroline Charlier、Séverine Robert、Johan Wouters、Bernard Masereel、Lionel Pochet
DOI:10.1016/j.bmcl.2005.12.070
日期:2006.4
The synthesis of novel coumarins bearing on the lateral side chain in the 3-position an amine or a guanidine group is described. In vitro evaluation highlighted 14d which possesses a meta aniline side chain as a very potent THR inhibitor. Surprisingly, the introduction of a guanidine moiety always led to a decrease in THR inhibiting properties. We, thus, used docking experiments to rationalize the SAR in the series. This study showed the crucial role of a conserved water molecule in the specificity pocket of THR during docking simulation in order to explain the inactivity of guanidine derivatives. (C) 2006 Elsevier Ltd. All rights reserved.