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Michael J Caspers

3 papers in the library · 78 citations · publishing 2011-2016

Papers

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Time course of pharmacokinetic and hormonal effects of inhaled high-dose salvinorin A in humans.

Journal of Psychopharmacology April 1, 2016 Matthew W Johnson, Katherine A Maclean, Michael J Caspers et al. 11 citations

Salvinorin A is a kappa opioid agonist and the principal psychoactive constituent of the Salvia divinorum plant, which has been used for hallucinogenic effects. Previous research on salvinorin A pharmacokinetics likely underestimated plasma levels typically resulting from the doses administered due to inefficient vaporization and not collecting samples during peak drug effects. Six healthy...

Behavioral effects and central nervous system levels of the broadly available κ-agonist hallucinogen salvinorin A are affected by P-glycoprotein modulation in vivo.

Journal of Pharmacology and Experimental Therapeutics June 1, 2012 Eduardo R Butelman, Michael J Caspers, Kimberly M Lovell et al. 27 citations

Active blood-brain barrier mechanisms, such as the major efflux transporter P-glycoprotein (mdr1), modulate the in vivo/central nervous system (CNS) effects of many pharmacological agents, whether they are used for nonmedical reasons or in pharmacotherapy. The powerful, widely available hallucinogen salvinorin A (from the plant Salvia divinorum) is a high-efficacy, selective κ-opioid agonist...

Opioid receptor probes derived from cycloaddition of the hallucinogen natural product salvinorin A.

Journal of Natural Products April 25, 2011 Anthony Lozama, Christopher W Cunningham, Michael J Caspers et al. 40 citations

As part of our continuing efforts toward more fully understanding the structure-activity relationships of the neoclerodane diterpene salvinorin A, we report the synthesis and biological characterization of unique cycloadducts through [4+2] Diels-Alder cycloaddition. Microwave-assisted methods were developed and successfully employed, aiding in functionalizing the chemically sensitive salvinorin...

DOI: 10.1021/np1007872 (opens in new tab) Full text (opens in new tab) Salvinorin a Natural compounds Furan-containing natural products Phytochemistry +12