Synthesis and potassium KV7 channel opening activity of thioether analogues of the analgesic flupirtine
Literature Information
Christian Bock, Kristin Beirow, Abdrrahman S. Surur, Lukas Schulig, Anja Bodtke, Patrick J. Bednarski, Andreas Link
Flupirtine, an opener of neuronal voltage gated potassium channels (KV7.2/3), has been used as a therapeutic alternative for pain treatment in patients refractory to NSAIDs and opioids. Because flupirtine is associated with rare but fatal drug-induced liver injury that may result from the formation of toxic metabolites upon metabolic oxidation, we synthesized novel derivatives with the goal of identifying equally active and ultimately safer KV7.2/3 channel openers. Four thioether analogues were designed to lack a nitrogen atom that would be a prerequisite for the formation of toxic para-quinone diimines, and form sulfoxide and sulfone metabolites instead. KV7.2/3 channel opening activity and hepatotoxicity data of twelve novel flupirtine analogues, four thioethers and their respective sulfoxide and sulfone metabolites are reported.
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Organic & Biomolecular Chemistry

Organic & Biomolecular Chemistry (OBC) publishes original and high impact research and reviews in organic chemistry. We welcome research that shows new or significantly improved protocols or methodologies in total synthesis, synthetic methodology or physical and theoretical organic chemistry as well as research that shows a significant advance in the organic chemistry or molecular design aspects of chemical biology, catalysis, supramolecular and macromolecular chemistry, theoretical chemistry, mechanism-oriented physical organic chemistry, medicinal chemistry or natural products. Articles published in the journal should report new work which makes a highly-significant impact in the field. Routine and incremental work is generally not suitable for publication in the journal. More details about key areas of our scope are below. In all cases authors should include in their article clear rationale for why their research has been carried out.




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