The Significance of Chirality in Drug Design and Synthesis of Bitopic Ligands as D<sub>3</sub> Receptor (D<sub>3</sub>R) Selective Agonists
作者:Francisco O. Battiti、Sophie L. Cemaj、Adrian M. Guerrero、Anver Basha Shaik、Jenny Lam、Rana Rais、Barbara S. Slusher、Jeffery R. Deschamps、Greg H. Imler、Amy Hauck Newman、Alessandro Bonifazi
DOI:10.1021/acs.jmedchem.9b00702
日期:2019.7.11
improve their D3R selectivity. We found that the (2S,5S) conformation of scaffold 2 resulted in a privileged architecture with increased affinity and selectivity for the D3R. In addition, a cyclopropyl moiety incorporated into the linker and full resolution of the chiral centers resulted in lead compound 53 and eutomer 53a that demonstrate significantly higher D3R binding selectivities than the reference
由于多巴胺D2样受体之间的高度同源性,发现能够区分D2,D3和D4受体亚型的配体仍然是一项重大挑战。先前的工作已举例说明了使用双位配体作为一种强大的策略,可实现对激动剂和拮抗剂的亚型选择性。受D3优先激动剂(+)-PD128,907(1)和PF592,379(2)的化学修饰潜力的启发,我们合成了双位结构以进一步提高其D3R选择性。我们发现支架2的(2S,5S)构象导致特权架构具有增加的亲和力和D3R的选择性。此外,引入连接基的环丙基部分和手性中心的完全拆分,导致铅化合物53和eutomer 53a的D3R结合选择性明显高于参考化合物。此外,大鼠肝微粒体中有利的代谢稳定性支持将来在多巴胺系统失调的体内模型中的研究。