title: Synthesis and pharmacology of 11-nor-1-methoxy-9-hydroxyhexahydrocannabinols and 11-nor-1-deoxy-9-hydroxyhexahydrocannabinols: new selective ligands for the cannabinoid CB2 receptor.
abstract: Fourteen novel CB2 receptor selective cannabinoids were synthesized via initial Lewis acid catalyzed rearrangement of resorcinol precursors to obtain the cannabinoid moiety. These are the 1-methoxy-9-hydroxyhexahydrocannabinols and the 1-deoxy-9-hydroxyhexahydrocannabinols, with 1',1'-dimethylalkyl side chains of four to seven carbon atoms at C-3 of the cannabinoid nucleus. The cannabinols synthesized and described in this paper all exhibit greater affinity for the CB2 receptor than for the CB1 receptor. Exceptionally high CB2 affinity was observed for 1-deoxy-9beta-hydroxy-dimethylhexylhexahydrocannabinol (JWH-361, 9, n = 3) K(i) = 2.7 nM and 1-deoxy-9beta-hydroxydimethylpentylhexahydrocannabinol (JWH-300, 9, n = 2) K(i) = 5.3 nM. In general, the stereochemistry of the 9-hydroxy group is important and the beta-orientation enhances both CB2 receptor affinity and selectivity.
authors.affiliation: Howard L. Hunter Laboratory, Clemson University, Clemson, SC 29634-0973, USA.
authors.forename: Karla-Sue C
authors.initials: KS
authors.lastname: Marriott
authors.forename: John W
authors.initials: JW
authors.lastname: Huffman
authors.forename: Jenny L
authors.initials: JL
authors.lastname: Wiley
authors.forename: Billy R
authors.initials: BR
authors.lastname: Martin
mesh_terms: D002187:Cannabinol / Q000031:analogs & derivatives / Q000138:chemical synthesis / Q000737:chemistry / Q000494:pharmacology; D002460:Cell Line; D015195:Drug Design; D006801:Humans; D008024:Ligands; D008968:Molecular Conformation; D043884:Receptor, Cannabinoid, CB1 / Q000187:drug effects; D043885:Receptor, Cannabinoid, CB2 / Q000187:drug effects*; D013329:Structure-Activity Relationship
chemical_list: D008024:Ligands; D043884:Receptor, Cannabinoid, CB1; D043885:Receptor, Cannabinoid, CB2; D002187:Cannabinol