RT Journal Article T1 Discovery of (3-Phenylcarbamoyl-3,4-dihydro-2H-pyrrol-2-yl) phosphonates as Imidazoline I2 receptor ligands with anti-Alzheimer and analgesic properties A1 Bagán, Andrea A1 López Ruiz, Alba A1 Abás Prades, Sònia A1 Ruiz Cantero, M. Carmen A1 Vasilopoulou, Foteini A1 Taboada Jara, Teresa A1 Griñán Ferré, Christian A1 Pallàs, Mercè A1 Muguruza Millán, Carolina A1 Díez Alarcia, Rebeca A1 Callado Hernando, Luis Felipe A1 Entrena Fernández, José Manuel A1 Cobos del Moral, Enrique José A1 Pérez Fernández, Belén A1 Morales García, José A. A1 Molins, Elies A1 Jonghe, Steven De A1 Daelemans, Dirk A1 Brea Floriani, José Manuel A1 Val García, Cristina A1 Loza García, María Isabel A1 Hernández Hernández, Elena A1 García Sevilla, Jesús A. A1 García-Fuster, M. Julia A1 Díaz Navarro, Caridad A1 Fernández Godino, Rosario A1 Genilloud, Olga A1 Beljkaš, Milan A1 Oljačić, Slavica A1 Nikolic, Katarina A1 Escolano Mirón, Carmen K1 Ligands K1 Phenyls K1 Plasma K1 Selectivity K1 Substituents AB Imidazoline I2 receptors (I2-IRs) are altered in Alzheimer’s disease (AD) patients and are associated with analgesia. I2-IRs are not structurally described, and their pharmacological characterization relies on their modulation by highly affine ligands. Herein, we describe the synthesis of (3-phenylcarbamoyl-3,4-dihydro-2H-pyrrol-2-yl)phosphonates endowed with relevant affinities for I2-IRs in human brain tissues. The optimal ADME and pharmacokinetic profile of a selected compound, 12d, secured its in vivo exploration in a senescence accelerated prone 8 mice revealing improvement in the cognitive impairment and unveiling the mechanism of action by analyzing specific AD biomarkers. The treatment of a capsaicin-induced mechanical hypersensitivity murine model with 12d revealed analgesic properties devoid of motor coordination issues. The target engagement of 12d was demonstrated by suppression of the analgesic effect by pretreatment with idazoxan. Overall, 12d is a putative candidate for advancing preclinical phases and supports the modulation of I2-IRs as an innovative approach for therapeutics PB ACS Publications YR 2025 FD 2025-01-17 LK https://hdl.handle.net/10347/45592 UL https://hdl.handle.net/10347/45592 LA eng NO Andrea Bagán, Alba López-Ruiz, Sònia Abás, M. Carmen Ruiz-Cantero, Foteini Vasilopoulou, Teresa Taboada-Jara, Christian Griñán-Ferré, Mercè Pallàs, Carolina Muguruza, Rebeca Diez-Alarcia, Luis F. Callado, José M. Entrena, Enrique J. Cobos, Belén Pérez, José A. Morales-García, Elies Molins, Steven De Jonghe, Dirk Daelemans, José Brea, Cristina Val, M. Isabel Loza, Elena Hernández-Hernández, Jesús A. García-Sevilla, M. Julia García-Fuster, Caridad Díaz, Rosario Fernández-Godino, Olga Genilloud, Milan Beljkaš, Slavica Oljačić, Katarina Nikolic, and Carmen Escolano. Discovery of (3-Phenylcarbamoyl-3,4-dihydro-2H-pyrrol-2-yl)phosphonates as Imidazoline I2 Receptor Ligands with Anti-Alzheimer and Analgesic Properties. Journal of Medicinal Chemistry 2025 68 (3), 2551-2573 DOI: 10.1021/acs.jmedchem.4c01644 NO This work was supported by Ministerio de Ciencia, Innovación y Universidades, Agencia Estatal de Investigación (Spain, PID2022-1380790B-I00 to C.E., and PID2021-138079OB-I00 to M.P.; MICIU/AEI/10.13039/501100011033 and FEDER, UE; and PDC2022-133441-I00 to C.E.; MICIU/AEI/10.13039/501100011033 Europea Next GenerationEU/PRTR), Basque Government (IT-1512-22) and Generalitat de Catalunya (2021 SGR 00357). Financial support was provided for A.L.-R. (PRE2022-105091 ministerio de Ciencia e Innovación). E.H.-H. was first funded by the Margarita Salas Program (Ministerio de Universidades; Plan de Recuperación, Transformación y Resilencia; NextGenerationEU) with the participation of the University of the Balearic Islands, and currently holds grant FJC2022-048338-I, funded by MCIN/AEI/10.13039/501100011033 and by the European Union NextGenerationEU/PRTR. The authors acknowledge grant support from the Ministry of Science and Innovation, Spain, with funds from the European Union NextGenerationEU (PRTRC17.I1) and the Autonomous Community of Galicia within the framework of the 2023 Biotechnology Plan Applied to Health, Xunta de Galicia (ED431C 2022/20) and the European Regional Development Fund (ERDF). This study was partially supported by the Andalusian Regional Government (grant CTS-109). Authors also thank the support of the Unit of Excellence “UNETE” from the University of Granada (reference UCE-PP2017-05). M.B., S.O., and K.N. acknowledge the Ministry of Science, Technological Development and Innovation, Republic of Serbia through two Grant Agreements with University of Belgrade-Faculty of Pharmacy No. 451-03-65/2024-03/200161 and No. 451-03-66/2024-03/200161. A.L. thanks to Grant PRE2022-105091 funded by MICIU/AEI/10.13039/501100011033 DS Minerva RD 28 abr 2026