ABSTRACT
New cholecystokinin-1 receptor (CCK1R) agonist 'triggers' were identified using iterative library synthesis. Structural activity relationship studies led to the discovery of compound 10e, a potent CCK1R agonist that demonstrated robust weight loss in a diet-induced obese rat model with very low systemic exposure. Pharmacokinetic data suggest that efficacy is primarily driven through activation of CCK1R's located within the intestinal wall.
Subject(s)
Amides/chemical synthesis , Drug Discovery , Piperidines/chemical synthesis , Receptor, Cholecystokinin A/agonists , Amides/chemistry , Amides/pharmacology , Animals , Cells, Cultured , Disease Models, Animal , Humans , Inhibitory Concentration 50 , Male , Mice , Mice, Obese , Piperidines/chemistry , Piperidines/pharmacology , Protein Binding/drug effects , Rats , Rats, Sprague-Dawley , Structure-Activity Relationship , Weight Loss/drug effectsABSTRACT
We describe the design, synthesis, and structure-activity relationships of triazolobenzodiazepinone CCK1 receptor agonists. Analogs in this series demonstrate potent agonist activity as measured by in vitro and in vivo assays for CCK1 agonism. Our efforts resulted in the identification of compound 4a which significantly reduced food intake with minimal systemic exposure in rodents.
