Design, synthesis and evaluation of 1,3,6-trisubstituted-4-oxo-1,4-dihydroquinoline-2-carboxylic acid derivatives as ET A receptor selective antagonists using FRET assay
作者:Nikhil Khadtare、Ralph Stephani、Vijaya Korlipara
DOI:10.1016/j.bmcl.2017.04.049
日期:2017.6
shown that 1,3,6-trisubstituted-4-oxo-1,4-dihydroquinoline-2-carboxylic acid derivatives exhibit noteworthy endothelin receptor antagonist activity. A series of analogues with modifications centered around position 6 of the heterocyclic quinolone core and replacement of the aryl carboxylic acid group with an isosteric tetrazole ring was designed and synthesized to further optimize the structure activity
内皮素轴,特别是ETA和ETB这两种受体亚型,正在研究中,用于治疗各种疾病,例如肺动脉高压,纤维化,肾衰竭和癌症。我们实验室以前的工作表明,1,3,6-三取代-4-氧代-1,4-二氢喹啉-2-羧酸衍生物表现出值得注意的内皮素受体拮抗剂活性。设计并合成了一系列以杂环喹诺酮核的6位为中心进行修饰的类似物,并合成了等位四唑环取代芳基羧酸基团,以进一步优化结构活性关系。使用GeneBLAzer®分析技术通过体外福斯特共振能量转移(FRET)测定内皮素受体拮抗剂的活性。该系列中最有效的成员在亚纳摩尔范围内表现出ETA受体拮抗剂活性,IC50值为0.8nM,与ETB受体相比,对ETA受体的选择性是其1000倍。它的活性和选择性与最近批准的药物马西坦坦相似。