In this paper, the benzo-cracking approach was applied to the potent sigma1 (σ1) receptor antagonist 1 to afford the less conformationally constrained 1,3-dioxane derivatives 2 and 3. To evaluate the effect of the increase in the distance between the two hydrophobic structural elements that flank the basic function, the cis and trans diastereomers of 4 and 5 were also prepared and studied. Compounds 2 and 3 showed affinity values at the σ1 receptor significantly higher than that of the lead compound 1. In particular, 3 displayed unprecedented selectivity over the σ2 receptor, the phencyclidine site of the NMDA receptor, and opioid receptor subtypes, as well as over the dopamine transporter. Docking results supported the structure-activity relationship studies. Due to its interesting biological profile, derivative 3, selected for an in vivo study in a validated preclinical model of binge eating, was able to counteract the overeating of palatable food only in binging rats, without affecting palatable food intake in the control group and anxiety-like and depression-related behaviors in female rats. This result strengthened the involvement of the σ1 receptor in the compulsive-like eating behavior and supported the σ1 receptor as a promising target for the management of eating disorders.
Novel Highly Potent and Selective Sigma1 Receptor Antagonists Effectively Block the Binge Eating Episode in Female Rats / C. Cifani, E. Micioni Di Bonaventura, L. Botticelli, F. Del Bello, G. Giorgioni, P. Pavletić, A. Piergentili, W. Quaglia, A. Bonifazi, D. Schepmann, B. Wünsch, G. Vistoli, M.V. Micioni Di Bonaventura. - In: ACS CHEMICAL NEUROSCIENCE. - ISSN 1948-7193. - 11:19(2020 Sep 04), pp. 3107-3116.
|Titolo:||Novel Highly Potent and Selective Sigma1 Receptor Antagonists Effectively Block the Binge Eating Episode in Female Rats|
|Parole Chiave:||Selective sigma1 ligands; binge eating episode; forced swimming test; highly palatable food; open field test|
|Settore Scientifico Disciplinare:||Settore CHIM/08 - Chimica Farmaceutica|
|Data di pubblicazione:||4-set-2020|
|Data ahead of print / Data di stampa:||2020|
|Digital Object Identifier (DOI):||http://dx.doi.org/10.1021/acschemneuro.0c00456|
|Appare nelle tipologie:||01 - Articolo su periodico|