Discovery of 1,3-disubstituted pyrazole peripheral cannabinoid receptor partial agonists

Scott P. Runyon; Rangan Maitra; Ann Marie Decker; Elaine Arrington Gay; Vineetha Vasukuttan; George Salvatore Amato; Lucas T. Laudermilk; George Salvatore Amato; Scott P. Runyon; Vineetha Vasukuttan; Ann Decker; Elaine Arrington Gay; Lucas T. Laudermilk; Rangan Maitra

Discovery of 1,3-disubstituted pyrazole peripheral cannabinoid receptor partial agonists

Amato, G., Runyon, S., Vasukuttan, V., Decker, A. M., Gay, E. A., Laudermilk, L., & Maitra, R. (2023). Discovery of 1,3-disubstituted pyrazole peripheral cannabinoid receptor partial agonists. Bioorganic & medicinal chemistry letters, Article 129430. Advance online publication. https://doi.org/10.1016/j.bmcl.2023.129430

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Abstract

Partial agonists of peripheral cannabinoid receptors (CBRs) have potential therapeutic applications in several medical conditions. However, (-)-trans-Δ9-tetrahydrocannabinol (THC), the principal active component of marijuana, which is a partial agonist of CB1 and CB2 penetrates the central nervous system (CNS) and produces adverse effects. Peripherally restricted partial agonists of CBRs, particularly of CB1, can be used to treat illnesses safely and effectively with a better therapeutic index. Here, we report on our efforts to synthesize pyrazole partial CBR agonists with peripheral selectivity, resulting in lead compound 40. This compound is a potent partial agonist of CB1 with ∼ 5-fold higher plasma biodistribution over brain and represents an early lead for optimization.