Discovery of Potent and Selective Agonists of δ Opioid Receptor by Revisiting the “Message-Address” Concept
作者:Qing Shen、Yuanyuan Qian、Xiaoqin Huang、Xuejun Xu、Wei Li、Jinggen Liu、Wei Fu
DOI:10.1021/acsmedchemlett.5b00423
日期:2016.4.14
address the binding of endogenous peptides to the opioid receptors and was later successfully applied in the discovery of the first nonpeptide δ opioid receptor (DOR) antagonist naltrindole. By revisiting this concept, and based on the structure of tramadol, we designed a series of novel compounds that act as highly potent and selective agonists of DOR among which (−)-6j showed the highest affinity (Ki
提出了经典的“消息地址”概念来解决内源性肽与阿片受体的结合,后来成功地用于发现第一个非肽δ阿片受体(DOR)拮抗剂纳那多尔。通过重新研究该概念,并基于曲马多的结构,我们设计了一系列新型化合物,这些化合物可作为DOR的强效和选择性激动剂,其中(-)- 6j显示出最高的亲和力(K i = 2.7 nM),最佳激动活性(EC 50 = 2.6 nM)和DOR选择性(比其他两个亚型阿片受体高1000倍以上)。分子对接研究表明(-)- 6j的“消息”部分与残基Asp128相互作用3.32和一个相邻的水分子,(-)- 6j的“地址”部分带有疏水残基Leu300 7.35,Val281 6.55和Trp284 6.58,从而提高了DOR的选择性。新型化合物(-)- 6j的发现以及对DOR-激动剂结合的深入了解将有助于我们设计更有效和更具选择性的DOR激动剂。