Discovery of Diphenoxy Derivatives with Flexible Linkers as Ligands for β-Amyloid Plaques
作者:Jianhua Jia、Longfei Zhang、Jia Song、Jiapei Dai、Mengchao Cui
DOI:10.1021/acs.molpharmaceut.0c00537
日期:2020.11.2
analysis revealed that modification on the linkers or substituents tolerated great flexibility, which challenged the long-held belief that rigid and planar structures are exclusively favored for Aβ binding. Three ligands were labeled by iodine-125, and they exhibited good properties in vitro and in vivo, which further supported that this flexible scaffold was potential and promising for the development
具有 π 共轭系统的高度刚性和平面支架已被广泛认为是 β-淀粉样蛋白 (Aβ) 结合配体必不可少的。在这项研究中,合成并评估了具有不同类型的更灵活的接头作为 Aβ 配体的二苯氧基化合物库。它们中的大多数对 Aβ 1-42聚集体显示出良好的亲和力 ( K i < 100 nM) ,一些配体甚至显示出K i值小于 10nM。构效关系分析表明,接头或取代基的修饰具有很大的灵活性,这挑战了长期以来认为刚性和平面结构专用于 Aβ 结合的观点。三种配体被碘125标记,它们在体外和体内表现出良好的特性,进一步支持这种柔性支架在Aβ成像剂的开发中具有潜力和前景。