New 2-Arylpyrazolo[4,3-<i>c</i>]quinoline Derivatives as Potent and Selective Human A<sub>3</sub> Adenosine Receptor Antagonists
作者:Pier Giovanni Baraldi、Mojgan Aghazadeh Tabrizi、Delia Preti、Andrea Bovero、Francesca Fruttarolo、Romeo Romagnoli、Naser Abdel Zaid、Allan R. Moorman、Katia Varani、Pier Andrea Borea
DOI:10.1021/jm050125k
日期:2005.7.1
selectivity 6c (K(i)hA(1), A(2A)>1000 nM, EC(50)hA(2B)>1000 nM, K(i)hA(3) = 9 nM), 6d (K(i)hA(1), A(2A)>1000 nM, EC(50)hA(2B)>1000 nM, K(i)hA(3) = 16 nM), 6b (K(i)hA(1), A(2A) >1000 nM, EC(50)hA(2B)>1000 nM, K(i)hA(3) = 19 nM). In conclusion, the 2-phenyl-2,5-dihydro-pyrazolo[4,3-c]quinolin-4-one derivatives described herein represent a new family of in vitro selective antagonists for the adenosine
在本文中,我们报告了新型的2-苯基-2,5-二氢-吡唑并[4,3-c]喹啉-4-酮类化合物作为A(3)腺苷受体拮抗剂的合成和生物学评估。我们设计了一种基于Kira-Vilsmeier反应的新路线,用于合成此类化合物。一些合成的化合物在纳摩尔范围内显示出A(3)腺苷受体亲和力,并在人(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)腺苷受体亚型。我们在2-苯基环上引入了几个取代基。特别是在4位上被甲基,甲氧基和氯取代可得到最佳活性和选择性6c(K(i)hA(1),A(2A)> 1000 nM,EC(50)hA(2B)> 1000 nM ,K(i)hA(3)= 9 nM),6d(K(i)hA(1),A(2A)> 1000 nM,EC(50)hA(2B)> 1000 nM,K(i)hA (3)= 16 nM),6b(K(i)hA(1),A(2A)> 1000