Design, synthesis and biological evaluation of Tozadenant analogues as adenosine A2A receptor ligands
作者:Dana R. Renk、Marcel Skraban、Dirk Bier、Annette Schulze、Erika Wabbals、Franziska Wedekind、Felix Neumaier、Bernd Neumaier、Marcus Holschbach
DOI:10.1016/j.ejmech.2021.113214
日期:2021.3
Their affinity and subtype selectivity with regard to human adenosine A1-and A2A receptors were determined using radioligand binding assays. Ki values for human A2AR ranged from 2.4 to 38 nM, with more than 120-fold selectivity over A1 receptors for all evaluated compounds except 13k which had a Ki of 361 nM and 18-fold selectivity. The most potent fluorine-containing derivatives 13e, 13g and 13l exhibited
其目的以获得有力的腺苷A 2A受体(A 2A R)的配体,一系列的4-羟基衍生物18的ñ - (4-甲氧基-7-吗啉-4-基-1,3-苯并[ d ]设计并合成了噻唑-2-基)-4-甲基哌啶-1-羧酰胺(SYN-115,Tozadenant)。通过化学结构原理获得目标化合物,该原理涉及适当的氨基苯并噻唑苯基氨基甲酸酯与市售或易于合成的官能化哌啶的反应。使用放射性配体结合测定法测定它们对人腺苷A 1和A 2A受体的亲和力和亚型选择性。A人的K i值2A R范围从2.4到38 nM,对所有评估的化合物的A 1受体选择性超过120倍,除了13k的K i为361 nM和18倍选择性。最有效的含氟衍生物13e,13g和13l对人A 2A R的K i值分别为4.9 nM,3.6 nM和2.8 nM 。有趣的是,发现大鼠A 2A R的相应值是其四到五倍。更高。通过与18 F放射性标记并在体外进一步证实了它们与A