Discovery of Aroyl Piperazine Derivatives as I<sub>Kr</sub> & I<sub>Ks</sub> Dual Inhibitors for Cardiac Arrhythmia Treatment
作者:Xiaoke Guo、Haopeng Sun、Lvpei Du、Lu Huang、Jing Xu、Yingying Zhu、Peng Yu、Xiaojin Zhang、Yiqun Tang、Qidong You
DOI:10.2174/1573406409666131128144755
日期:2014.5.31
Combined blockade of IKr and IKs potassium channels is considered to be a promising therapeutic strategy for
arrhythmia. In this study, we designed and synthesized 15 derivatives through modifying the hit compound 7 that was discovered
by screening in-house database by whole-patch clamp technique. All of the compounds were evaluated on CHO
and HEK 293 cell lines stably expressing hERG (IKr) and hKCNQ1/KCNE1 (IKs) potassium channels, and half of them
exhibited improved dual IKr and IKs inhibitory effects compared to the hit compound. Compounds 7a and 7b with potent
dual inhibitory activities were selected for further in vivo evaluations. Due to the preferable pharmacological behaviors,
compound 7a deserved further optimization as a promising lead compound.
结合阻断IKr和IKs钾通道被认为是一种有前景的心律失常治疗策略。在本研究中,我们通过修饰通过全细胞膜片钳技术筛选内部数据库发现的命中化合物7,设计并合成了15个衍生物。所有化合物都在稳定表达hERG(IKr)和hKCNQ1/KCNE1(IKs)钾通道的CHO和HEK 293细胞系上进行了评估,其中一半化合物相较于命中化合物显示出改进的IKr和IKs双重抑制效果。具有强大双重抑制活性的化合物7a和7b被选作进一步的体内评估。由于其优越的药理学特性,化合物7a值得作为有前景的先导化合物进一步优化。