Pyrazolo[1,5-c]quinazoline derivatives and their simplified analogues as adenosine receptor antagonists: Synthesis, structure–affinity relationships and molecular modeling studies
作者:Daniela Catarzi、Vittoria Colotta、Flavia Varano、Daniela Poli、Lucia Squarcialupi、Guido Filacchioni、Katia Varani、Fabrizio Vincenzi、Pier Andrea Borea、Diego Dal Ben、Catia Lambertucci、Gloria Cristalli
DOI:10.1016/j.bmc.2012.10.031
日期:2013.1
A number of 5-oxo-pyrazolo[1,5-c]quinazolines (series B-1), bearing at position-2 the claimed (hetero)aryl moiety (compounds 1–8) but also a carboxylate group (9–14), were designed as hA3 AR antagonists. This study produced some interesting compounds endowed with good hA3 receptor affinity and high selectivity, being totally inactive at all the other AR subtypes. In contrast, the corresponding 5-ammino
许多-5-氧代吡唑并[1,5- Ç ]喹唑啉(系列B-1 ),在轴承位置2所要求保护的(杂)芳基部分(化合物1 - 8),还包括羧酸酯基团(9 - 14)被设计为hA 3 AR拮抗剂。这项研究产生了一些有趣的化合物,它们具有良好的hA 3受体亲和力和高选择性,在所有其他AR亚型中都完全没有活性。相反,相应的5-氨基衍生物(B-2系列)在hA 3 AR处不结合或以非常低的亲和力结合,唯一的例外是5- N-苯甲酰基化合物19表示在高μ摩尔范围内的hA 3 K i值。导致了一些5(3)的识别的合成中间体的评估- (2-氨基苯基)-3(5) - (杂)芳基吡唑20 - 24具有适度的亲和力,但朝向HA高选择性3 AR亚型。进行本文报道的三环和简化衍生物的分子对接以描述它们与我们的hA 3受体模型的假设结合模式。