期刊
BIOORGANIC & MEDICINAL CHEMISTRY LETTERS
卷 38, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.bmcl.2021.127882
关键词
Oxa-adamantyl cannabinoid; Classical cannabinoid; Hexahydrocannabinol; Synthesis; Design; Novel class; CB1 cannabinoid receptor; CB2 cannabinoid receptor; Binding affinity
资金
- National Institutes of Health [DA009158, DA041435, DA041307, DA045020, DA03801, DA023142, DA007215, DA026795]
The novel oxa-adamantyl cannabinoids are identified as high affinity ligands for CB1 and CB2 cannabinoid receptors, showing potential as potent CB1 receptor agonists. Their synthesis is convenient, amenable to scale up, and suitable for large-scale preparation.
As a continuation of earlier work on classical cannabinoids bearing bulky side chains we report here the design, synthesis, and biological evaluation of 3 '-functionalized oxa-adamantyl cannabinoids as a novel class of cannabinergic ligands. Key synthetic steps involve nucleophilic addition/transannular cyclization of aryllithium to epoxyketone in the presence of cerium chloride and stereoselective construction of the tricyclic cannabinoid nucleus. The synthesis of the oxa-adamantyl cannabinoids is convenient, and amenable to scale up allowing the preparation of these analogs in sufficient quantities for detailed in vitro evaluation. The novel oxa-adamantyl cannabinoids reported here were found to be high affinity ligands for the CB1 and CB2 cannabinoid receptors. In the cyclase assay these compounds were found to behave as potent and efficacious CB1 receptor agonists. Isothiocyanate analog AM10504 is capable of irreversibly labeling both the CB1 and CB2 receptors.
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