Synthesis and cardiac electrophysiological activity of aryl-substituted derivatives of the class III antiarrhythmic agent sematilide. Potential class I/III agents
摘要:
Twelve novel derivatives of the selective class III antiarrhythmic agent sematilide were prepared in an attempt to incorporate both class I and class III electrophysiological properties into a single molecule. Electrophysiological activity was determined by standard microelectrode techniques in canine cardiac Purkinje fibers. Initial assessment of class I efficacy was carried out in a ouabain-induced arrhythmia model in guinea pigs. All of the compounds prolonged action potential duration in Purkinje fibers (class III activity), and three were active against ouabain-induced arrhythmias (class I activity). Selected compounds were evaluated further in dogs for efficacy against arrhythmias occurring 24 h following coronary ligation (automatic arrhythmias) and induced by using programmed electrical stimulation techniques (reentrant arrhythmias). The most effective compounds from the series are 3g and -j, which were effective in both canine models. Molecular modeling and structure-activity relationships are discussed.
2-(HETEROARYL) ALKYL INDAZOLE 6-PHENYL AND THIENYL METHYL AMIDE AS THROMBIN INHIBITORS
申请人:Siegel Stephan
公开号:US20100105663A1
公开(公告)日:2010-04-29
The invention relates to substituted indazoles and methods for production thereof and use thereof for the production of medicinal products for the treatment and/or prophylaxis of diseases, especially of cardiovascular diseases, preferably of thromboembolic diseases.
[EN] PROCESS FOR PREPARING A MODIFIED NATURAL RUBBER BY MEANS OF A MODIFIER<br/>[FR] PROCÉDÉ DE PRÉPARATION D'UN CAOUTCHOUC NATUREL MODIFIÉ AU MOYEN D'UN AGENT DE MODIFICATION
申请人:MICHELIN & CIE
公开号:WO2016087603A1
公开(公告)日:2016-06-09
L 'invention concerne un procédé de préparation d 'un caoutchouc naturel modifié comprenant les étapes suivantes : a) une étape d 'oxydation du caoutchouc naturel conduisant à la génération d'un caoutchouc naturel oxydé, puis b) une étape de réaction du caoutchouc naturel oxydé avec un agent de modification de formule (I) suivante : n étant un nombre entier supérieur ou égal à 1, X étant un atome d' oxygène ou un groupement choisi parmi les alkylènes, les arylènes, les aralkylènes, les alkylenoxy, les arylenoxy et les aralkylenoxy, R étant un groupement interactif vis-à-vis d'une charge renforçante.
Synthesis and cardiac electrophysiological activity of aryl-substituted derivatives of the class III antiarrhythmic agent sematilide. Potential class I/III agents
作者:Gary B. Phillips、Thomas K. Morgan、Klaus Nickisch、Joan M. Lind、Robert P. Gomez、Ronald A. Wohl、Thomas M. Argentieri、Mark E. Sullivan
DOI:10.1021/jm00164a025
日期:1990.2
Twelve novel derivatives of the selective class III antiarrhythmic agent sematilide were prepared in an attempt to incorporate both class I and class III electrophysiological properties into a single molecule. Electrophysiological activity was determined by standard microelectrode techniques in canine cardiac Purkinje fibers. Initial assessment of class I efficacy was carried out in a ouabain-induced arrhythmia model in guinea pigs. All of the compounds prolonged action potential duration in Purkinje fibers (class III activity), and three were active against ouabain-induced arrhythmias (class I activity). Selected compounds were evaluated further in dogs for efficacy against arrhythmias occurring 24 h following coronary ligation (automatic arrhythmias) and induced by using programmed electrical stimulation techniques (reentrant arrhythmias). The most effective compounds from the series are 3g and -j, which were effective in both canine models. Molecular modeling and structure-activity relationships are discussed.
Welvart, Comptes Rendus Hebdomadaires des Seances de l'Academie des Sciences, 1954, vol. 238, p. 2536