Discovery of triazolopyridine GS-458967, a late sodium current inhibitor (Late I Na i) of the cardiac Na V 1.5 channel with improved efficacy and potency relative to ranolazine
作者:Dmitry O. Koltun、Eric Q. Parkhill、Elfatih Elzein、Tetsuya Kobayashi、Gregory T. Notte、Rao Kalla、Robert H. Jiang、Xiaofen Li、Thao D. Perry、Belem Avila、Wei-Qun Wang、Catherine Smith-Maxwell、Arvinder K. Dhalla、Sridharan Rajamani、Brian Stafford、Jennifer Tang、Nevena Mollova、Luiz Belardinelli、Jeff A. Zablocki
DOI:10.1016/j.bmcl.2016.03.101
日期:2016.7
dependent block across the sodium isoforms including the central and peripheral nervous system isoforms that is consistent with its low therapeutic index (approximately 5-fold in rat, 3-fold in dog). Compound 4h represents our initial foray into a 2nd generation Late INa inhibitor program and is an important proof-of-concept compound. We will provide additional reports on addressing the CNS challenge in a
我们从中等通量筛选不含碱性胺基团的杂环化合物开始,以避免hERG和β-受体阻滞剂的活性,并确定[1,2,4]三唑并[4,3- a ]吡啶为早期铅。优化用于晚期I Na电流抑制的取代基和缺乏峰值I Na抑制导致发现4h(GS-458967),相对于雷诺嗪具有更高的抗心律不齐活性。不幸的是,4h证明其对钠同工型(包括中枢神经系统和周围神经系统同工型)的使用依赖性阻滞,与其低治疗指数相符(大鼠约为5倍,狗约为3倍)。复合4h代表我们对第二代Late I Na抑制剂计划的首次尝试,是一种重要的概念验证化合物。我们将在后续交流中提供有关应对CNS挑战的其他报告。