CJ-1639: A Potent and Highly Selective Dopamine D3 Receptor Full Agonist
摘要:
We have identified several ligands with high binding affinities to the dopamine D3 receptor and excellent selectivity over the D2 and D1 receptors. CJ-1639 (17) binds to the D3 receptor with a K(i) value of 0.50 nM and displays a selectivity of >5000 times over D2 and D1 receptors in binding assays using dopamine receptors expressed in the native rat brain tissues. CJ-1639 binds to human D3 receptor with a Ki value of 3.61 nM and displays over >1000-fold selectivity over human D1 and D2 receptors. CJ-1639 is active at 0.01 mg/kg at the dopamine D3 receptor in the rat and only starts to show a modest D2 activity at doses as high as 10 mg/kg. CJ-1639 is the most potent and selective D3 full agonist reported to date.
在此,我们报告了一系列新的普拉克索衍生物作为多巴胺-3 (D 3 ) 受体的高效选择性激动剂的合成和评估。许多这些新的化合物结合至d的3具有亚纳摩尔亲和力受体并显示了d优异的选择性(> 10 000)3受体在d 1和d 2受体。例如,化合物23 ( N -( cis -3-(2-(( ( S )-2-amino-4,5,6,7-tetrahydrobenzo[ d ]thiazol-6-yl)(prop)amino)ethyl )-3-羟基环丁基)-3-(5-甲基-1,2,4-恶二唑-3-基)苯甲酰胺)与 D 3受体结合,Ki值为 0.53 n M,并在使用大鼠脑制剂的结合测定中显示对 D 2和 D 1受体的选择性 > 20 000 。它在人肝微粒体中具有极好的稳定性。此外,体外功能测定表明它是人 D 3受体的完全激动剂。