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
A2A adenosine receptor antagonists
申请人:——
公开号:US20030149060A1
公开(公告)日:2003-08-07
Disclosed are novel A
2A
adenosine receptor antagonists, useful for treating various disease states, for example cardiovascular disorders, including tissue damage due to ischemia, CNS diseases, including Parkinson's disease, depression, and the like.
The Length and Flexibility of the 2-Substituent of 9-Ethyladenine Derivatives Modulate Affinity and Selectivity for the Human A<sub>2A</sub>Adenosine Receptor
that the insertion of substituents at various positions on adenine leads to A2A AR antagonists with affinity in the micromolar to nanomolar range. In this work, a series of 9‐ethyladenine derivatives bearing phenylalkylamino, phenylakyloxy or phenylakylthio groups of different lengths at the 2‐position were synthesised and tested against the human adenosine receptors. The derivatives showed sub‐micromolar
A 2A腺苷受体(A 2A AR)是开发用于治疗中枢神经系统疾病的药理学工具的关键目标。先前的研究表明,在腺嘌呤的不同位置插入取代基会导致A 2A具有在微摩尔至纳摩尔范围内的亲和力的AR拮抗剂。在这项工作中,合成了一系列在2位带有不同长度的苯基烷基氨基,苯基烷基氧基或苯基烷基硫基的9-乙基腺嘌呤衍生物,并针对人腺苷受体进行了测试。衍生物对这些膜蛋白表现出亚微摩尔的亲和力。在8位上进一步引入溴原子的作用是提高对所有AR的亲和力和选择性,并导致能够以低纳摩尔水平与A 2A AR亚型结合的化合物。功能研究证实,新的腺嘌呤衍生物具有A 2A的作用具有最大抑制浓度值在纳摩尔范围内的AR拮抗剂。分子建模研究提供了这些化合物在A 2A AR上可能的结合模式的描述,并解释了该AR亚型的亲和力数据。
Synthesis and Biological Activity of Trisubstituted Adenines as A<sub><b>2A</b></sub>Adenosine Receptor Antagonists
作者:Catia Lambertucci、Sauro Vittori、Ram Chandra Mishra、Diego Dal Ben、Karl-Norbert Klotz、Rosaria Volpini、Gloria Cristalli
DOI:10.1080/15257770701542264
日期:2007.11.26
The discovery of new drugs for the treatment of neurodegenerative disorders, such as Parkinson's disease, has become an attractive field of research. Due to the regulation of D(2) receptor activity by A(2A) adenosine receptor, potent and selective ligands of A(2A) subtype could be useful tools to study neurodegenerative disorders. A series of 2,8-disubstituted-9-ethyladenine derivatives was synthesized