Design, Synthesis, and Biological Evaluation of New 8-Heterocyclic Xanthine Derivatives as Highly Potent and Selective Human A<sub>2B</sub> Adenosine Receptor Antagonists
作者:Pier Giovanni Baraldi、Mojgan Aghazadeh Tabrizi、Delia Preti、Andrea Bovero、Romeo Romagnoli、Francesca Fruttarolo、Naser Abdel Zaid、Allan R. Moorman、Katia Varani、Stefania Gessi、Stefania Merighi、Pier Andrea Borea
DOI:10.1021/jm0309654
日期:2004.3.1
in radioligand binding assays at human (h) A(1), A(2A), A(2B), and A(3) ARs. We introduced several heterocycles, such as pyrazole, isoxazole, pyridine, and pyridazine, at the 8-position of the xanthine nucleus and we have also investigated different spacers (substituted acetamide, oxyacetamide, and urea moieties) on the heterocycle introduced. Various groups at the 3- and 4-positions of phenylacetamide
在这里,我们报告8杂环取代的黄嘌呤作为有效和选择性A(2B)腺苷受体拮抗剂的合成。探索了黄嘌呤与重组人A(2B)腺苷受体(ARs)结合在HEK-293细胞(HEK-A(2B))和其他AR亚型中的结构活性关系(SAR)。合成的化合物在纳摩尔浓度范围内显示出A(2B)腺苷受体亲和力,并且在人类(h)A(1),A(2A),A(2B)和A(3)的放射性配体结合测定中评估了良好的选择性水平AR。我们在黄嘌呤核的8位引入了几个杂环,例如吡唑,异恶唑,吡啶和哒嗪,我们还研究了所引入杂环上的不同间隔基(取代的乙酰胺,氧乙酰胺和脲部分)。研究了苯基乙酰胺部分的3位和4位上的各种基团。这项研究使我们能够确定衍生物2-(3,4-二甲氧基苯基)-N- [5-(2,6-dioxo-1,3-dipropyl-2,3,6,7-tetrahydro-1H-purin- 8-基)-1-甲基-1H-吡唑-3-基]乙酰胺(29