Synthesis and in vitro pharmacological studies of new C(2) modified salvinorin A analogues
摘要:
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.
Synthesis and in vitro pharmacological studies of new C(2) modified salvinorin A analogues
摘要:
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.
The synthesis of a new series of C-2-alkyl-2-methoxymethyl-salvinorin ethers and their binding affinities at kappa-, mu-, and delta-opioid receptors are presented. We have developed a synthesis that enables installation of alkyl-substituents at C-2 while maintaining the integrity of the C-2 methoxymethyl ether and retaining kappa-opioid receptor binding activity. Among these new compounds, 2-methyl-2-methoxymethyl-salvinorin ether (9a) is a potent full agonist at the kappa receptor and shows comparable potency in K-i and EC50 with salvinorin A and U50488H. These C2-alkylated analogs have been identified as full kappa agonists. (C) 2015 Elsevier Ltd. All rights reserved.
Synthesis and in vitro pharmacological studies of new C(2) modified salvinorin A analogues
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.