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Kenneth G Holden

5 papers in the library · 127 citations · publishing 2004-2007

Papers

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Synthetic studies of neoclerodane diterpenes from Salvia divinorum: exploration of the 1-position.

Bioorganic & Medicinal Chemistry Letters November 15, 2007 Kenneth G Holden, Kevin Tidgewell, Alfred Marquam et al.

Modification of the C-1 ketone of salvinorin A (2a) produces analogues with opioid antagonist properties. Of particular significance is the finding that 1-deoxo-1,10-dehydrosalvinorin A (11a) is a moderately potent antagonist at all three opioid receptor subtypes, and that herkinorin (2b), a mu agonist, is converted to a weak antagonist by removal of the C-1 ketone (3b and 11b). These...

Synthetic studies of neoclerodane diterpenes from Salvia divinorum: selective modification of the furan ring.

Bioorganic & Medicinal Chemistry Letters June 15, 2006 Wayne W Harding, Matthew Schmidt, Kevin Tidgewell et al.

A synthetic sequence has been developed to selectively functionalize the furan ring of the natural product salvinorin A (2a). The synthetic routes described convert the furan ring in 2a into an N-sulfonylpyrrole, oxazole or an oxadiazole. In addition, a procedure has been found to remove the furan skeleton completely. Biological results indicate that replacement of the furan ring with an...

Synthetic studies of neoclerodane diterpenes from Salvia divinorum: semisynthesis of salvinicins A and B and other chemical transformations of salvinorin A.

Journal of Natural Products 2006 Wayne W Harding, Matthew Schmidt, Kevin Tidgewell et al. 59 citations

Salvinorin A (1) is a hallucinogenic neoclerodane diterpene isolated from the widely available psychoactive plant Salvia divinorum and is the first example of a non-nitrogenous opioid receptor ligand. At present, there is little information available as to why this compound is selective for kappa opioid receptors. One approach to better understanding the mode of binding of 1 at kappa receptors...

DOI: 10.1021/np050398i (opens in new tab) Full text (opens in new tab) Salvinorin a research Unique hallucinogen Compound 10a Neoclerodane diterpene +5

A facile method for the preparation of deuterium labeled salvinorin A: synthesis of [2,2,2-2H3]-salvinorin A.

Bioorganic & Medicinal Chemistry Letters October 18, 2004 Kevin Tidgewell, Wayne W Harding, Mark S Schmidt et al. 68 citations

Salvinorin A is a novel hallucinogen isolated from the widely available leaves of Salvia divinorum. Based on its mechanism of action, salvinorin A has shown potential as a stimulant abuse therapeutic. However, there are no methods for the detection of salvinorin A or its metabolites in biological fluids. In order to begin developing salvinorin A as a potential therapeutic, an understanding of...

DOI: 10.1016/j.bmcl.2004.07.081 (opens in new tab) Full text (opens in new tab) Salvinorin a Drug metabolism Analytical methods Therapeutic potential