Design, Synthesis, and Structure−Activity Relationships of Novel Bicyclic Azole-amines as Negative Allosteric Modulators of Metabotropic Glutamate Receptor 5
作者:Douglas F. Burdi、Rachel Hunt、Lei Fan、Tao Hu、Jun Wang、Zihong Guo、Zhiqiang Huang、Chengde Wu、Larry Hardy、Michel Detheux、Michael A. Orsini、Maria S. Quinton、Robert Lew、Kerry Spear
DOI:10.1021/jm100736h
日期:2010.10.14
molecule revealed a preference for a 2-substituted pyridine group linked directly to the central heterocycle. Variation of the central azolo-amine portion of the molecule revealed a preference for the [4,5-c]-oxazoloazepine scaffold, while right-hand side variants showed a preference for ortho- and meta-substituted benzene rings linked directly to the tertiary amine of the saturated heterocycle. These
通过合理设计确定了一系列新型的二芳基双环唑胺,它们是代谢型谷氨酸受体5(mGluR5)的有效选择性负调节剂。合成了具有中等效力(IC 50 = 1.2μM)的初始命中化合物5a。对分子左侧结构活性关系(SAR)的评估显示,偏爱直接连接至中央杂环的2-取代吡啶基。该分子的中央氮杂-氨基部分的变异显示出对[4,5- c ]-恶唑并氮杂pine骨架的偏爱,而右侧变体则对邻位和间位偏爱-取代的苯环直接连接到饱和杂环的叔胺上。这些迭代导致了29b的合成,这是一种有效的(IC 50 = 16 nM)和选择性的负调节剂,在腹膜内给药时,在大鼠中表现出良好的脑穿透力,高的受体占有率以及大于1小时的作用持续时间。在大鼠和恒河猴中进行的正式PK研究表明,半衰期短是由于较高的首过清除率所致。