RT Journal Article T1 New pyridazinone-4-carboxamides as new cannabinoid receptor type-2 inverse agonists: Synthesis, pharmacological data and molecular docking A1 Ragusa, Giulio A1 Gómez Cañas, María A1 Morales, Paula A1 Pazos, María A1 Rodríguez Cueto, Carmen Aurora A1 Asproni, Battistina A1 Cichero, Elena A1 Fossa, Paola A1 Pinna, Gerard A1 Jagerovic, Nadine A1 Fernández Ruiz, José Javier A1 Murineddu, Gabriele AB In the last few years, cannabinoid type-2 receptor (CB2R) selective ligands have shown a great potential as novel therapeutic drugs in several diseases. With the aim of discovering new selective cannabinoid ligands, a series of pyridazinone-4-carboxamides was designed and synthesized, and the new derivatives tested for their affinity toward the hCB1R and hCB2R. The 6-(4-chloro-3-methylphenyl)-2-(4-fluorobenzyl)-N-(cis-4-methylcyclohexyl)-3-oxo-2,3-dihydropyridazine-4-carboxamide (9) displayed high CB2-affinity (KiCB2 = 2.0 ± 0.81 nM) and a notable selectivity (KiCB1/KiCB2 > 2000). In addition, 9 and other active new synthesized entities have demonstrated to behave as CB2R inverse agonists in [35S]-GTPγS binding assay. ADME predictions of the newly synthesized CB2R ligands suggest a favourable pharmacokinetic profile. Docking studies disclosed the specific pattern of interactions of these derivatives. Our results support that pyridazinone-4-carboxamides represent a new promising scaffold for the development of potent and selective CB2R ligands. PB Elsevier SN 0223-5234 YR 2017 FD 2017 LK https://hdl.handle.net/20.500.14352/93394 UL https://hdl.handle.net/20.500.14352/93394 LA eng NO Ragusa G, Gómez-Cañas M, Morales P, Rodríguez-Cueto C, Pazos MR, Asproni B, Cichero E, Fossa P, Pinna GA, Jagerovic N, Fernández-Ruiz J, Murineddu G. New pyridazinone-4-carboxamides as new cannabinoid receptor type-2 inverse agonists: Synthesis, pharmacological data and molecular docking. Eur J Med Chem. 2017 Feb 15;127:398-412. doi: 10.1016/j.ejmech.2017.01.002. Epub 2017 Jan 4. PMID: 28088085. NO Ministerio Economía y competitividad (España) NO Comunidad de Madrid DS Docta Complutense RD 9 abr 2025