Synthesis, electrophysiological properties and analysis of structural requirements of a novel class of antiarrhythmic agents with potassium and calcium channel blocking properties
摘要:
Class III antiarrhythmic agents have been shown to prevent reentrant arrhythmias but also to be responsible for initiating arrhythmias characterised by afterdepolarizations and triggered activities. By combining potassium and calcium channel antagonistic actions, as with BRL-32872(1,2) (1), it might be possible to reduce the incidence of proarrhythmias albeit retaining antiarrhythmic efficacy. In the present study we synthesised and tested for their electrophysiological activity in guinea pig papillary muscle a wide panel of analogues of BRL-32872. Some qualitative relationships between compound structure and the inhibitory effect on the rapidly activating component of the delayed rectifier potassium current and/or the L-type calcium current will be presented. New derivatives depicting bell-shaped dose-response curves on action potential duration may therefore represent novel agents for improved antiarrhythmic therapy. (C) 1998 Elsevier Science Ltd. All rights reserved.
[EN] NEW SPIROCYCLOHEXANE DERIVATIVES, PHARMACEUTICAL COMPOSITIONS CONTAINING THEM AND THEIR USES AS ANTI-APOPTOTIC INHIBITORS<br/>[FR] NOUVEAUX DÉRIVÉS DE SPIROCYCLOHEXANE, COMPOSITIONS PHARMACEUTIQUES LES CONTENANT ET LEURS UTILISATIONS COMME INHIBITEURS ANTI-APOPTOTIQUES
申请人:SERVIER LAB
公开号:WO2024008941A1
公开(公告)日:2024-01-11
Compounds of Formula (I): wherein R1, R2, R3, R4and are as defined in the description. Medicaments.
式 (I) 的化合物:其中 R1、R2、R3、R4 和如描述中所定义。药物。
A Modular Strategy for the Synthesis of Macrocycles and Medium-Sized Rings via Cyclization/Ring Expansion Cascade Reactions
作者:Illya Zalessky、Jack M. Wootton、Jerry K. F. Tam、Dominic E. Spurling、William C. Glover-Humphreys、James R. Donald、Will E. Orukotan、Lee C. Duff、Ben J. Knapper、Adrian C. Whitwood、Theo F. N. Tanner、Afjal H. Miah、Jason M. Lynam、William P. Unsworth
DOI:10.1021/jacs.4c00659
日期:2024.2.28
and medium-sized rings are important in many scientific fields and technologies but are hard to make using current methods, especially on a large scale. Outlined herein is a strategy by which functionalized macrocycles and medium-sized rings can be prepared using cyclization/ringexpansion (CRE) cascade reactions, without resorting to high dilution conditions. CRE cascade reactions are designed to operate
Synthesis, electrophysiological properties and analysis of structural requirements of a novel class of antiarrhythmic agents with potassium and calcium channel blocking properties
Class III antiarrhythmic agents have been shown to prevent reentrant arrhythmias but also to be responsible for initiating arrhythmias characterised by afterdepolarizations and triggered activities. By combining potassium and calcium channel antagonistic actions, as with BRL-32872(1,2) (1), it might be possible to reduce the incidence of proarrhythmias albeit retaining antiarrhythmic efficacy. In the present study we synthesised and tested for their electrophysiological activity in guinea pig papillary muscle a wide panel of analogues of BRL-32872. Some qualitative relationships between compound structure and the inhibitory effect on the rapidly activating component of the delayed rectifier potassium current and/or the L-type calcium current will be presented. New derivatives depicting bell-shaped dose-response curves on action potential duration may therefore represent novel agents for improved antiarrhythmic therapy. (C) 1998 Elsevier Science Ltd. All rights reserved.