Scaffold Decoration at Positions 5 and 8 of 1,2,4-Triazolo[1,5-<i>c</i>]Pyrimidines to Explore the Antagonist Profiling on Adenosine Receptors: A Preliminary Structure–Activity Relationship Study
作者:Stephanie Federico、Antonella Ciancetta、Nicola Porta、Sara Redenti、Giorgia Pastorin、Barbara Cacciari、Karl Norbert Klotz、Stefano Moro、Giampiero Spalluto
DOI:10.1021/jm500752h
日期:2014.7.24
The structure–activity relationship (SAR) of new 5,8-disubstituted-1,2,4-triazolo[1,5-c]pyrimidines as adenosine receptors (ARs) antagonists has been explored. All the synthesized compounds show affinity for the hA2A and hA3 ARs depending on the substitution patterns at the 5 and 8 positions. In particular, a free amino group at the 5 position with an ethoxycarbonyl group at the 8 position leads to
探索了新型5,8-二取代-1,2,4-三唑并[1,5- c ]嘧啶作为腺苷受体(ARs)拮抗剂的结构-活性关系(SAR)。所有合成的化合物都显示对hA 2A和hA 3 AR的亲和力,具体取决于5和8位的取代方式。特别地,在在8所导致有效的和相当选择性的HA与乙氧羰基5-位上的游离氨基2A拮抗剂(化合物12:HA 2A AR ķ我= 3.32纳米; HA 1 /公顷2A = 55.6; HA 2A /小时3= 0.01),而在5位上引入甲基氨基官能团则在hA 3 AR上产生了良好的结合特性(化合物23:hA 3 AR K i = 4.14 nM,hA 1 / hA 3 = 236; hA 2A / hA 3 = 25)。通过计算机内受体驱动的方法,我们确定了在1,2,4-三唑并[1,5- c ]嘧啶(TP)支架的5和8位上取代的最有利取向,因此,我们已经阐明了观察到的SAR。