2-Aminoimidazole-based antagonists of the 5-HT6 receptor – A new concept in aminergic GPCR ligand design
作者:Adam S. Hogendorf、Agata Hogendorf、Rafał Kurczab、Justyna Kalinowska-Tłuścik、Piotr Popik、Agnieszka Nikiforuk、Martyna Krawczyk、Grzegorz Satała、Tomasz Lenda、Joanna Knutelska、Ryszard Bugno、Jakub Staroń、Wojciech Pietruś、Mikołaj Matłoka、Krzysztof Dubiel、Rafał Moszczyński-Pętkowski、Jerzy Pieczykolan、Maciej Wieczorek、Bogusław Pilarski、Paweł Zajdel、Andrzej J. Bojarski
DOI:10.1016/j.ejmech.2019.06.001
日期:2019.10
molecular switch may be responsible for the observed differences in 5-HT6R activity of the studied chemotypes with different amine-like fragments. Considering the multiple functionalization sites of the embedded guanidine fragment, diverse libraries were constructed, and the relationships between the structure and activity, metabolic stability, and solubility were established. Compounds from the N
提出了一种设计胺能GPCR配体的新策略–使用芳族,杂环碱性部分代替常绿哌嗪或脂环族和脂肪族胺。该假设已通过使用一系列基准的5-HT 6 R拮抗剂进行了测试,这些拮抗剂是通过将各种取代的2-氨基咪唑基团偶联至完善的1-苯磺酰基-1 H-吲哚(用作配体核心)而获得的。晶体学研究表明,质子化后,2-氨基咪唑片段触发共振驱动的构象变化,从而导致更高的亲和力。这种分子转换可能是造成5-HT 6差异的原因具有不同胺样片段的化学型的R活性。考虑到嵌入的胍片段的多个功能化位点,构建了各种文库,并建立了结构与活性,代谢稳定性和溶解度之间的关系。N-(1 H-咪唑-2-基)酰基酰胺化学型(10a – z)的化合物对5-HT 6 R表现出高亲和力,对5-HT 1A,5-HT 2A,5-HT 7的选择性很高和D 2受体(结合可忽略不计),这归因于其非常弱的碱性。已显示4-甲基-5- [1-(萘-1-磺酰基)-1 H-吲哚-3-基]