N6-(Arylalkyl)adenosines. Identification of N6-(9-fluorenylmethyl)adenosine as a highly potent agonist for the adenosine A2 receptor
作者:B. K. Trivedi、J. A. Bristol、R. F. Bruns、S. J. Haleen、R. P. Steffen
DOI:10.1021/jm00396a044
日期:1988.1
Several N6-(arylalkyl)adenosines related to N6-benzyladenosine were synthesized, and their A1 and A2 adenosine receptor binding affinities were determined. The annulated derivative N6-(1-naphthylmethyl)adenosine resulted in a very potent A2 agonist (A1 Ki = 24 nM, A2 Ki = 9.1 nM), whereas N6-(9-anthracenylmethyl)adenosine was virtually inactive (A1 Ki = 9,000 nM, A2 Ki = 29,000 nM). Interestingly,
合成了几种与N6-苄基腺苷有关的N6-(芳烷基)腺苷,并确定了它们的A1和A2腺苷受体结合亲和力。环状衍生物N6-(1-萘甲基)腺苷产生非常有效的A2激动剂(A1 Ki = 24 nM,A2 Ki = 9.1 nM),而N6-(9-蒽基甲基)腺苷实际上是无活性的(A1 Ki = 9,000 nM ,A 2 Ki = 29,000 nM)。有趣的是,结构相似的N6-(9-芴基甲基)腺苷是迄今为止报道的最有效的A2激动剂,A2结合的Ki为4.9 nM,A1结合的Ki为5.1 nM。N6-9-芴基腺苷和N6- [2-(9-芴基)乙基]腺苷的同系物对任一腺苷受体显示很少或没有活性。这些试剂对离体大鼠心脏的心率和冠状动脉血流的影响分别与其A1和A2结合亲和力平行。