Salvinorin A, an Active Component of the Hallucinogenic Sage <i>Salvia divinorum</i> Is a Highly Efficacious κ-Opioid Receptor Agonist: Structural and Functional Considerations
作者:Charles Chavkin、Sumit Sud、Wenzhen Jin、Jeremy Stewart、Jordan K. Zjawiony、Daniel J. Siebert、Beth Ann Toth、Sandra J. Hufeisen、Bryan L. Roth
DOI:10.1124/jpet.103.059394
日期:2004.3
The diterpene salvinorin A fromSalviadivinorum has recently been reported to be a high-affinity and selective kappa-opioid receptor agonist (Roth et al., 2002). Salvinorin A and selected derivatives were found to be potent and efficacious agonists in several measures of agonist activity using cloned human kappa-opioid receptors expressed in human embryonic kidney-293 cells. Thus, salvinorin A, s
Salvinorin A is the most potent naturally occurring opioid agonist yet discovered with high selectivity and affinity for kappa-opioid receptor. To explore its structure and activity relationships, a series of salvinorin A derivatives modified at the C(2) position were prepared and studied. These salvinorin A derivatives were screened for binding and functional activities at the human K-opioid receptor. Compound 4, containing a methoxymethyl group at the 2-position, was a full kappa-agonist with an EC50 value at 0.6 nM, which is about 7 times more potent than salvinorin A. (c) 2005 Elsevier Ltd. All rights reserved.