Novel analogs of (-)-Delta(8)-tetrahydrocannabinol (Delta(8)-THC) in which
the conformation of the side chain was restricted by incorporating the firs
t one or two carbons into a six membered ring fused with the aromatic pheno
lic A ring were synthesized. The affinities of the novel ligands for CB1 an
d CB2 indicated that the "southbound" chain conformer retained the highest
affinity for both receptors. (C) 1999 Elsevier Science Ltd. All rights rese
rved.