Selective class III antiarrhythmic agents. 1. Bis(arylalkyl)amines
摘要:
A series of bis(arylalkyl)amines is described and their effects on prolonging effective refractory period in isolated cardiac tissue listed. Most compounds prolonged the cardiac action potential without significantly altering the maximum rate of depolarization and may be defined as selective class III antiarrhythmic agents. It was found that a particularly advantageous structural feature was to have a methanesulfonamido moiety on both of the aryl rings. Thus, compound 16 [1-(4-methanesulfonamidophenoxy)2-[N-(4-methanesulfonamidophene thyl)-N- methylamine]ethane] was selected for further investigations. The compound is highly potent and selective class III agent which acts by blockade of cardiac potassium channels.
METHOD FOR PREPARING N-[4-(2-{[2-(4-METHANE SULFONAMIDOPHENOXY) ETHYL](METHYL)AMINO}ETHYL)PHENYL]METHANESULFONAMIDE (DOFETILIDE)
申请人:Farmak, A.S.
公开号:US20190169121A1
公开(公告)日:2019-06-06
A method for preparing 1-(4-methanesulfonamidophenoxy)-2-[N-(4-methanesulfonamidophenethyl)-N-methylamino]ethane (Dofetilide) of formula I by sulfonylation of 1-(4-aminophenoxy)-2-[N-(4-aminophenethyl)-N-methylamino]ethane of formula II with N-methylsulfonyl-N′-methylimidazolium chloride of formula III.
Compositions and Methods for Assaying hERG Channel Binding
申请人:Kalbag Suresh M.
公开号:US20080138826A1
公开(公告)日:2008-06-12
The present invention provides compositions and methods useful for assaying binding of compounds to the hERG K
+
channel. According to a method of the present invention, a compound of interest is added to the hERG K
+
channel in the presence of a selenium analog of a competitive inhibitor of the hERG K
+
channel. Next, the amount of the selenium analog of the competitive inhibitor that bound to the hERG K
+
channel is quantified using mass spectrometry. The quantified amount can then be used to determine the amount of the compound of interest that bound to the hERG K
+
channel. A selenium analog of any competitive inhibitor of the hERG K
+
channel may be used according to the present invention, including but not limited to selenium analogs of the small molecule dofetilide; the peptide BeKm-1; or a combination of both.
A method for treating a mammal which presents with heart failure comprising administering to a mammal having heart failure a therapeutically effective amount of dofetilide or a pharmaceutically acceptable salt thereof.
Combination of dofetilide and a calcium channel blocker
申请人:Pfizer Products Inc.
公开号:EP0965341A2
公开(公告)日:1999-12-22
Pharmaceutical compositions and methods comprising dofctilide and calcium channel blockers. The compositions and methods are useful for the treatment of arrhythmias.