Synthesis and Biological Evaluation of 14‐Alkoxymorphinans. Part 19 |
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Authors: | Falko Schü llner,Ruth Meditz,Roland Krassnig,Gü nther Morandell,Valery N. Kalinin,Ellen Sandler,Mariana Spetea,Angela White,Helmut Schmidhammer,Ilona P. Berzetei‐Gurske |
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Affiliation: | Falko Schüllner,Ruth Meditz,Roland Krassnig,Günther Morandell,Valery N. Kalinin,Ellen Sandler,Mariana Spetea,Angela White,Helmut Schmidhammer,Ilona P. Berzetei‐Gurske |
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Abstract: | The 14‐O‐benzylnaltrexones 3 – 6 were prepared from naltrexone ( 2 ) in several steps. The novel compounds were biologically evaluated in radioligand binding and in [35S]GTPγS functional assays in comparison to the reference compound naltrexone. In the binding assay, compounds 3 – 6 exhibited preference for κ opioid receptors, while the parent compound naltrexone shows preference for μ receptors. In the functional assay, μ antagonist potency of compounds 3 – 6 was in the range of naltrexone, while κ antagonist potency was considerably higher for most novel compounds in comparison to naltrexone. |
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