Synthesis, Biological Activity, and Molecular Modeling Investigation of New Pyrazolo[4,3-<i>e</i>]-1,2,4-triazolo[1,5-<i>c</i>]pyrimidine Derivatives as Human A<sub>3</sub> Adenosine Receptor Antagonists
作者:Pier Giovanni Baraldi、Barbara Cacciari、Stefano Moro、Giampiero Spalluto、Giorgia Pastorin、Tatiana Da Ros、Karl-Norbert Klotz、Katia Varani、Stefania Gessi、Pier Andrea Borea
DOI:10.1021/jm0109614
日期:2002.2.1
unsubstituted derivatives on the phenyl ring (e.g., compound 59, hA(3) = 0.16 nM, hA(1)/hA(3) = 3713, hA(2A)/hA(3) = 2381, hA(2B)/hA(3) = 1388) showed the best profile in terms of affinity and selectivity at the human A(3) adenosine receptors. The introduction of a sulfonic acid moiety at the para position on the phenyl ring was attempted in order to design water soluble derivatives. However, this