Giovannoni, Maria Paola Pyrazolo[1',5':1,6]pyrimido[4,5-d]pyridazin-4(3H)-ones as selective human A(1) adenosine receptor ligands. [electronic resource] - Bioorganic & medicinal chemistry Nov 2010 - 7890-9 p. digital Publication Type: Journal Article ISSN: 1464-3391 Standard No.: 10.1016/j.bmc.2010.09.043 doi Subjects--Topical Terms: Adenosine A1 Receptor Antagonists--chemical synthesisCell LineHumansLigandsProtein BindingPyrazoles--chemistryPyridazines--chemical synthesisPyrimidines--chemistryReceptor, Adenosine A1--chemistryReceptor, Adenosine A2A--chemistryReceptor, Adenosine A2B--chemistryReceptor, Adenosine A3--chemistry