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Daneel Ferreira

4 papers in the library · 74 citations · publishing 2008-2013

Papers

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Kappa-opioid receptor-selective dicarboxylic ester-derived salvinorin A ligands.

Bioorganic & Medicinal Chemistry Letters May 15, 2013 Prabhakar R Polepally, Kate White, Eyal Vardy et al. 24 citations

Salvinorin A, the active ingredient of the hallucinogenic plant Salvia divinorum is the most potent known naturally occurring hallucinogen and is a selective κ-opioid receptor agonist. To better understand the ligand-receptor interactions, a series of dicarboxylic ester-type of salvinorin A derivatives were synthesized and evaluated for their binding affinity at κ-, δ- and μ-opioid receptors....

Intramolecular transacetylation in salvinorins D and E.

Journal of Natural Products April 23, 2010 Lukasz Kutrzeba, Xing-Cong Li, Yuanqing Ding et al. 23 citations

Extraction of fresh Salvia divinorum leaves afforded salvinorins E and D as potential biosynthesis precursors of salvinorin A, a major metabolite and a potent hallucinogen. Attempts at HPLC purification of salvinorin E (2) with acetonitrile as a solvent revealed an equilibrium with its regioisomer, salvinorin D (3), in a 3:5 ratio. The presence of both compounds was readily observed in the (1)H...

DOI: 10.1021/np900447w (opens in new tab) Full text (opens in new tab) Salvinorin Chemical equilibrium Natural products Chemical precursors

Salvinorins J from Salvia divinorum: Mutarotation in the Neoclerodane System

Journal of Natural Products May 27, 2009 Lukasz Kutrzeba, Daneel Ferreira, Jordan Kordian Zjawiony 27 citations

A search for biosynthetic precursors of salvinorin A (1) led to the isolation of a new neoclerodane diterpenoid hemiacetal mixture, salvinorins J (2), from the chloroform extract of Salvia divinorum. A leaf surface extraction method was used on S. divinorum, affording a chlorophyll-free extract containing predominantly neoclerodane diterpenoids, including the new salvinorins J (2) and 14 known...

Short synthesis of a novel class of salvinorin A analogs with hemiacetalic structure.

Tetrahedron Letters February 4, 2008 Ruslan V Bikbulatov, Jeremy Stewart, Wentao Jin et al.

Novel semisynthetic analogs of salvinorin A, a full agonist having extraordinary affinity as well as selectivity for the κ-opioid receptor (KOR), were obtained in good yields. The derivatives are remarkable for their unusual and unique hemiacetal structure in the salvinorin series of compounds. The formation of the hemiacetal occurs with epimerization at C-12, thus preserving the original...