Synthesis and Pharmacological Evaluation of Novel Nitrobenzenic Thromboxane Modulators as Antiplatelet Agents Acting on Both the Alpha and Beta Isoforms of the Human Thromboxane Receptor
作者:Julien Hanson、Denis Reynaud、Na Qiao、Philippe Devel、Anne-Lise Moray、Jean-François Renard、Leanne P. Kelley、Jean-Yves Winum、Jean-Louis Montero、B. Therese Kinsella、Bernard Pirotte、Cecil R. Pace-Asciak、Jean-Michel Dogné
DOI:10.1021/jm060108a
日期:2006.6.1
Thromboxane A(2) ( TXA(2)) is an arachidonic acid metabolite involved in pathologies such as stroke, myocardial infarction, and atherosclerosis. Consequently, the design of TXA2 receptor ( TP) antagonists remains of great interest in cardiovascular medicine. The actions of TXA2 are mediated by its specific G-protein coupled receptor of which two alternative spliced isoforms, TP alpha and TP beta, have been described in humans. In this study, we report the synthesis of a series of original N-alkyl-N'-[2-( cycloalkyl, alkylaryl)-5-nitrobenzenesulfonyl] urea and N-alkyl-N'-[ 2-( alkylaryl)-5-nitrobenzenesulfonyl]-N"-cyanoguanidines and outline their pharmacological evaluation using the individual TP alpha and TP beta isoforms. Among compounds analyzed, several of them exhibited greater affinity and/or functional activity for either TP alpha or TP beta. The most promising molecules were also found to be antiplatelet agents. From the present results, structural features involved in isoform selectivity can be proposed, and thereby several lead compounds have been identified for the further development of selective TP isoform antagonists.