Synthesis and evaluation of N-substituted 2-amino-4,5-diarylpyrimidines as selective adenosine A1 receptor antagonists
作者:Georgios Alachouzos、Eelke B. Lenselink、Thea Mulder-Krieger、Henk de Vries、Adriaan P. IJzerman、Julien Louvel
DOI:10.1016/j.ejmech.2016.09.081
日期:2017.1
We report the synthesis and biological evaluation of new 2-amino-4,5-diarylpyrimidines as selective antagonists at the adenosine A1 receptor. The scaffold they are based upon is a deaza variation of a previously reported collection of 3-amino-5,6-diaryl-1,2,4-triazines, members of which had a subnanomolar affinity but limited selectivity over the A2A subtype. Initially, similar structure-affinity relationships
我们报告了腺苷A 1受体作为选择性拮抗剂的新的2-氨基-4,5-二芳基嘧啶的合成和生物学评估。它们所基于的支架是先前报道的3-氨基-5,6-二芳基-1,2,4-三嗪类化合物的重氮变异体,其成员具有亚纳摩尔亲和力,但对A 2A亚型的选择性有限。最初,在5-芳基环上建立相似的结构-亲和性关系,然后重点在于通过在N 2-位上引入取代基,同时保持纳摩尔亲和力,来提高在hA 1 AR处的选择性。具有反式的化合物3z4-羟基环取代基,被鉴定为一种有效的(ķ我(HA 1个AR)= 7.7纳米)和选择性的(ķ我(HA 2A AR)= 1389 nm)的拮抗剂在人腺苷A 1个受体。在A 1和A 2A亚型上进行计算对接,使4-羟基环己基取代基对选择性的影响合理化,与嘧啶5-位上的取代基的性质有关。