Acyclic Analogues of Deoxyadenosine 3‘,5‘-Bisphosphates as P2Y<sub>1</sub> Receptor Antagonists
作者:Yong-Chul Kim、Carola Gallo-Rodriguez、Soo-Yeon Jang、Erathodiyil Nandanan、Mary Adams、T. Kendall Harden、José L. Boyer、Kenneth A. Jacobson
DOI:10.1021/jm9905211
日期:2000.2.1
trans-olefinic groups greatly reduced antagonist potency at the P2Y(1) receptor. Analogues containing a diethanolamine amide group and an aryl di(methylphosphonate) were both less potent than 10 as antagonists, with IC(50) values of 14 and 16 microM, respectively, and no agonist activity was observed for these analogues. Thus, the ribose moiety is clearly not essential for recognition by the turkey P2Y(1) receptor
P2Y(1) 受体由 ADP 激活,存在于内皮细胞、平滑肌、上皮细胞、肺、胰腺、血小板和中枢神经系统中。借助分子建模,我们设计了核苷酸类似物,可作为该亚型的选择性拮抗剂。本研究检验了以下假设:核糖环的无环修饰已被证明对于核苷抗病毒药物(如更昔洛韦)非常成功,可推广到 P2Y 受体配体。具体而言,发现 P2Y(1) 受体的结合位点具有足够的适应性,允许用连接到腺嘌呤 9 位的无环脂肪族和芳香族链取代核糖基团。制备了三组具有不同侧链结构的腺嘌呤衍生物,每组含有两个对称的磷酸酯或膦酸酯基团。通过无环衍生物在刺激火鸡红细胞膜中磷脂酶C时充当激动剂或拮抗剂的能力证明了生物活性。 [0073] 一种无环N(6)-甲基腺嘌呤衍生物,2-[2-(6-甲基氨基-嘌呤-9-基)-乙基]-丙烷-1, 3-二氧基(磷酸二铵)(10),含有异戊基二磷酸部分,是 P2Y(1) 受体的完全拮抗剂,IC(50) 值为 1