Piperazinyl-substituted pyridine and imidazole anti-arrhythmic agents
申请人:Pfizer, Inc.
公开号:US04806536A1
公开(公告)日:1989-02-21
A series of novel 4-substituted piperazinyl-pyridine and 4-substituted piperazinyl-imidazole compounds have been prepared, including their pharmaceutically acceptable salts, wherein the 4-substituent is a lower phenylalkyl group or a derivative thereof further substituted on the phenyl moiety by a sulphamoyl or sulphonylamino group or by a nitro, amino or acetamido group. These particular compounds are useful in therapy as highly effective anti-arrhythmic agents and therefore, are of value in the treatment of various cardiac arrythmias. The most preferred member compound of the series is N-4-[1-hydroxy-2-(4-[4-pyridinyl]-1-piperazinyl)ethyl]phenyl} methanesulphonamide. Methods for preparing all these compounds from known starting materials are provided.
Bispidine compounds useful in the treatment of cardiac arrythmias
申请人:AstraZeneca AB
公开号:US20040229900A1
公开(公告)日:2004-11-18
There is provided compounds of formula I,
1
wherein R
1
, R
2
, R
3
, R
4
, R
5
, R
6
, R
7
, R
41
, R
42
, R
43
R
44
, R
45
, R
46
, A and B have meanings given in the description, which are useful in the prophylaxis and in the treatment of arrhythmias, in particular atrial and ventricular arrhythmias.
A series of novel 1-(phenethyl) and 1-(1-heteroarylethyl)-3-substituted piperidine derivatives have been prepared, including their pharmaceutically acceptable salts and various novel key intermediates therefor. The 3-substituent present in these compounds is an unsubstituted or substituted diphenylmethoxy group or a diphenylmethoxy-derived group, while the 1-substituent is unsubstituted or substituted phenethyl or 1-(2-heteroarylethyl) wherein the heteroaryl moiety is thienyl, pyridyl or pyrazinyl. These compounds in the form of both their racemates and 3R-isomers, are useful in therapy as smooth muscle muscarinic receptor antagonists and therefore, are of value in the treatment diseases associated with altered motility and/or smooth muscle tone. The most preferred compound is (3R)-diphenylmethoxy-1-(3,4-methylenedioxyphenethyl)piperidine. Methods for preparing these compounds from known starting materials are provided.
Alternative Coupling Reaction with Unactivated Furan Derivatives
作者:Marc-André Giroux、Kimiaka C. Guérard、Marc-André Beaulieu、Cyrille Sabot、Sylvain Canesi
DOI:10.1002/ejoc.200900542
日期:2009.8
Treatment of various dienimides in the presence of a Lewis acid and (trimethylsiloxy)furan leads to the corresponding aniline furan-2(5H)-ones. The same treatment with furan yields a triaryl product and, surprisingly, a byproduct with a pentacyclo[5.4.0.0.0.0]undecane main core. The formation of this birdcage system containing nine stereogenic centres was produced with complete diastereoselectivity
Certain amines which are muscarinic receptor antagonists
申请人:Pfizer Inc.
公开号:US05192765A1
公开(公告)日:1993-03-09
Amines of the following formula: ##STR1## where the variables are defined in the specification are useful in the treatment of diseases associated with altered motility and/or tone of smooth muscle.