RT Journal Article T1 Optimization of 2-Amino-4,6-diarylpyrimidine-5-carbonitriles as Potent and Selective A1 Antagonists A1 Val García, Cristina A1 Rodríguez García, Carlos A1 Prieto Díaz, Rubén A1 Crespo Gavilán, Abel A1 Azuaje Guerrero, Jhonny Alberto A1 Carbajales Pérez, Carlos A1 Majellaro, María A1 Díaz Holguín, Alejandro A1 Brea Floriani, José Manuel A1 Loza García, María Isabel A1 Gioé Gallo, Claudia A1 Contino, Marialessandra A1 Stefanachi, Angela A1 García Mera, Xerardo A1 Estévez Cabanas, Juan Carlos A1 Gutiérrez de Terán, Hugo A1 Sotelo Pérez, Eddy AB We herein document a large collection of 108 2-amino-4,6-disubstituted-pyrimidine derivatives as potent, structurally simple, and highly selective A1AR ligands. The most attractive ligands were confirmed as antagonists of the canonical cyclic adenosine monophosphate pathway, and some pharmacokinetic parameters were preliminarilly evaluated. The library, built through a reliable and efficient three-component reaction, comprehensively explored the chemical space allowing the identification of the most prominent features of the structure–activity and structure–selectivity relationships around this scaffold. These included the influence on the selectivity profile of the aromatic residues at positions R4 and R6 of the pyrimidine core but most importantly the prominent role to the unprecedented A1AR selectivity profile exerted by the methyl group introduced at the exocyclic amino group. The structure–activity relationship trends on both A1 and A2AARs were conveniently interpreted with rigorous free energy perturbation simulations, which started from the receptor-driven docking model that guided the design of these series PB ACS Publications SN 0022-2623 YR 2022 FD 2022 LK http://hdl.handle.net/10347/29223 UL http://hdl.handle.net/10347/29223 LA eng NO J. Med. Chem. 2022, 65, 3, 2091–2106 DS Minerva RD 29 abr 2026