Synthesis and structure-activity relationships of pyrazolo[4,3-d]pyrimidin-7-ones as adenosine receptor antagonists
作者:Harriet W. Hamilton、Daniel F. Ortwine、Donald F. Worth、James A. Bristol
DOI:10.1021/jm00384a016
日期:1987.1
5-substituted pyrazolo[4,3-d]pyrimidines that were synthesized during the course of the analysis. With use of the correlation as a guide, one additional 5-phenylpyrazolo[4,3-d]pyrimidine containing a 4-[[(dimethylamino)ethyl]amino]sulfonyl substituent to improve aqueous solubility was prepared. On the basis of the high correlation between adenosine binding affinities of analogously substituted xanthines and pyrazolo-[4
合成了在21位在5-位被各种苯基取代基取代的一系列21个1,3-二烷基吡唑并[4,3-d]嘧啶-7-酮,它们对腺苷A1受体具有亲和力。发现由于苯环的取代基引起的效价模式与先前报道的1,3-二烷基-8-苯基黄嘌呤系列中发现的模式平行。在这两个系列之间建立了定量的构效关系,该关系正确地预测了在分析过程中合成的另外六个5-取代的吡唑并[4,3-d]嘧啶的效力。以相关性为指导,制备了另外一种含有4-[[((二甲基氨基)乙基]氨基]磺酰基取代基的5-苯基吡唑并[4,3-d]嘧啶,以改善水溶性。