Synthesis and Structure−Activity Relationship of Pyrazolo[3,4-<i>d</i>]pyrimidines: Potent and Selective Adenosine A<sub>1</sub> Receptor Antagonists
作者:Sally-Ann Poulsen、Ronald J. Quinn
DOI:10.1021/jm960052s
日期:1996.1.1
structural differences between the A1 and A2a receptors with respect to the binding of pyrazolo[3,4-d]pyrimidines. This study resulted in prediction that increased A1 affinity could be achieved by incorporation of NH-alkyl substituents at C-4. This was confirmed by synthesis of alpha-[[4-(methylamino)-1-phenylpyrazolo[3,4-d]pyrimidin-6-yl]thiol] hexanamide (15) which was found to have an A1 Ki of 0.745 nM