Synthesis and characterization of 8-aminoquinolines, substituted by electron donating groups, as high-affinity copper chelators for the treatment of Alzheimer's disease
作者:Ju Huang、Michel Nguyen、Yan Liu、Anne Robert、Bernard Meunier
DOI:10.1016/j.crci.2019.05.003
日期:2019.5
Résumé The deregulation of copper homeostasis generates copper–amyloid aggregation and strongly participates in neuron damage in the brains of patients with Alzheimer's disease. Therefore, copper chelators able to regulate copper homeostasis should be considered as potential therapeutic agents. On the basis of a bidentate amine side chain attached at the 2-position of an 8-aminoquinoline motif, a series of low-molecular-weight copper chelators have been designed to act as specific tetradentate Cu(II) chelators. The affinity of these ligands for Cu(II) and their selectivity for Cu(II) with respect to Zn(II) are reported. These ligands provide a square planar tetradentate coordination sphere that should be suitable to extract copper (II) from copper–amyloid complexes, and are therefore expected to regulate copper homeostasis in vivo.
摘要:铜稳态的去调节导致铜-淀粉样蛋白聚集,并在阿尔茨海默病患者的大脑中强烈参与神经元损伤。因此,能够调节铜稳态的铜螯合剂应被视为潜在的治疗药物。基于一个与8-氨基喹啉结构的2位相连的双齿胺侧链,设计了一系列低分子量的铜螯合剂,作为特定的四齿Cu(II)螯合剂。这些配体对Cu(II)的亲和力以及相对于Zn(II)的选择性被报道。这些配体提供了一个平面方形的四齿配位空间,应该适合从铜-淀粉样蛋白复合物中提取铜(II),因此预计能够在体内调节铜稳态。