Synthesis, Pharmacology, and Molecular Docking Studies on 6-Desoxo-N-methylmorphinans as Potent Opioid Receptor Agonists

publication · 2 months ago
by Maria Dumitrascuta, Tanila Ben Haddou, Elena Guerrieri, Stefan M. Noha, Lea Schlafer, Helmut Schmidhammer, Mariana Spetea (University of Innsbruck)
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Position 6 of the morphinan skeleton plays a key role in the -opioid receptor (MOR) activity in vitro and in vivo. We describe the consequence of the 6-carbonyl group deletion in N-methylmorphinan-6-ones 1−4 on ligand−MOR interaction, signaling, and antinociception. While 6-desoxo compounds 1a, 2a, and 4a show similar profiles to their 6-keto counterparts, the 6-desoxo-14-benzyloxy substituted 3a displays significantly increased MOR binding and agonist potency and a distinct binding mode compared with its analogue 3.

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