Structure−Activity Relationships of Adenine and Deazaadenine Derivatives as Ligands for Adenine Receptors, a New Purinergic Receptor Family
作者:Thomas Borrmann、Aliaa Abdelrahman、Rosaria Volpini、Catia Lambertucci、Edgars Alksnis、Simone Gorzalka、Melanie Knospe、Anke C. Schiedel、Gloria Cristalli、Christa E. Müller
DOI:10.1021/jm9006356
日期:2009.10.8
Adenine derivatives bearing substituents in the 2-, N6-, 7-, 8-, and/or 9-position and a series of deazapurines were synthesized and investigated in [3H]adenine binding studies at the adenine receptor in rat brain cortical membrane preparations (rAde1R). Steep structure−activity relationships were observed. Substitution in the 8-position (amino, dimethylamino, piperidinyl, piperazinyl) or in the 9-position
合成并研究了在[ 3]中带有2-,N 6-,7-,8和/或9位取代基的腺嘌呤衍生物和一系列脱氮嘌呤。H]腺嘌呤在大鼠大脑皮层膜制剂(rAde1R)中对腺嘌呤受体的结合研究。观察到陡峭的结构-活性关系。最好的取代是在8位(氨基,二甲基氨基,哌啶基,哌嗪基)或9位(2-吗啉代乙基)中带有碱性残基或在6位氨基官能团处引入极性取代基(羟基,氨基,乙酰基)是最好的修改。在稳定表达rAde1R的1321N1星形细胞瘤细胞的腺苷酸环化酶测定中,对所选腺嘌呤衍生物的功能评估表明,所研究的所有化合物均为激动剂或部分激动剂。在人类胚胎肾脏(HEK293)细胞的结合研究中还对化合物的子集进行了研究,该细胞还表达了高亲和力的腺嘌呤结合位点。人细胞系的结构亲和力关系与rAde1R相似,但不完全相同。特别是,N 6-乙酰腺嘌呤(25,K i大鼠:2.85μM; K i人:0.515μM)和8-氨基腺嘌呤(33,K i