Structure−Activity Relationships of New 1<i>H</i>-Imidazo[4,5-<i>c</i>]quinolin-4-amine Derivatives as Allosteric Enhancers of the A<sub>3</sub> Adenosine Receptor
作者:Anikó Göblyös、Zhan-Guo Gao、Johannes Brussee、Roberto Connestari、Sabrina Neves Santiago、Kai Ye、Adriaan P. IJzerman、Kenneth A. Jacobson
DOI:10.1021/jm060086s
日期:2006.6.1
1H-Imidazo[4,5-c]quinolin-4-amine derivatives have been synthesized as allosteric modulators of the human A3 adenosine receptor (AR). Structural modifications were made at the 4-amino and 2 positions. The compounds were tested in both binding and functional assays, and many were found to be allosteric enhancers of the action of A3AR agonists by several different criteria. First, a potentiation of the
1H-咪唑并[4,5-c]喹啉-4-胺衍生物已被合成为人类A3腺苷受体(AR)的变构调节剂。在4-氨基和2位上进行结构修饰。在结合和功能测定中都测试了该化合物,并且通过几种不同的标准,发现许多化合物是A3AR激动剂作用的变构增强剂。首先,对于许多衍生物,观察到了激动剂C1-IB-MECA的最大功效的增强。同样,许多这些化合物降低了激动剂[125I] I-AB-MECA从A3AR的解离速率。最显着的是,发现化合物43(LUF6000)在功能测定中可将激动剂功效提高45%,并在不影响激动剂效价的情况下类似地降低解离速率。A3AR的变构增强的结构要求不同于抑制平衡结合的要求。因此,我们制备了人A3AR的变构增强剂,其与在正构位点抑制平衡结合相比具有改善的变构作用。