作者:John W. Daly、Izumi Hide、Peter K. Bridson
DOI:10.1021/jm00172a022
日期:1990.10
3-isobutyl-1-methylxanthine, and enprofylline were inhibitors of binding of adenosine analogues to rat brain A1 and A2 adenosine receptors and were antagonists of A2 adenosine receptors stimulatory to adenylate cyclase in rat PC12 cell membranes. Activity at adenosine receptors was lower than the corresponding xanthines, perhaps because imidazodiazepinediones contain a boat-shaped seven-membered ring rather
从次黄嘌呤合成了一系列咪唑并[4,5-e] [1-4]二氮杂-5,8-二酮。这些咖啡因,茶碱,可可碱,3-异丁基-1-甲基黄嘌呤和Enprofylline的某些环状同源物是腺苷类似物与大鼠脑A1和A2腺苷受体结合的抑制剂,并且是刺激大鼠腺苷酸环化酶的A2腺苷受体的拮抗剂。 PC12细胞膜。腺苷受体的活性低于相应的黄嘌呤,这可能是因为咪唑二氮杂二酮含有一个船形的七元环,而不是黄嘌呤的平面杂芳基环系统。咪唑二氮杂二酮对脑中苯并二氮杂位的亲和力低。