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Open AccessCommunication
Pharmaceuticals 2016, 9(3), 43;

Convergent Synthesis of Two Fluorescent Ebselen-Coumarin Heterodimers

Pharmaceutical Institute, Pharmaceutical Chemistry I, University of Bonn, An der Immenburg 4, D-53121 Bonn, Germany
Department of Organic Chemistry, Wrocław University of Technology (A2), Wyspiańskiego 27, 50-370 Wrocław, Poland
Author to whom correspondence should be addressed.
Academic Editor: Jean Jacques Vanden Eynde
Received: 12 May 2016 / Revised: 30 June 2016 / Accepted: 1 July 2016 / Published: 8 July 2016
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The organo-seleniumdrug ebselen exhibits a wide range of pharmacological effects that are predominantly due to its interference with redox systems catalyzed by seleno enzymes, e.g., glutathione peroxidase and thioredoxin reductase. Moreover, ebselen can covalently interact with thiol groups of several enzymes. According to its pleiotropic mode of action, ebselen has been investigated in clinical trials for the prevention and treatment of different ailments. Fluorescence-labeled probes containing ebselen are expected to be suitable for further biological and medicinal studies. We therefore designed and synthesized two coumarin-tagged activity-based probes bearing the ebselen warhead. The heterodimers differ by the nature of the spacer structure, for which—in the second compound—a PEG/two-amide spacer was introduced. The interaction of this probe and of ebselen with two cysteine proteases was investigated. View Full-Text
Keywords: coumarin; ebselen; heterodimer coumarin; ebselen; heterodimer

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Küppers, J.; Schulz-Fincke, A.C.; Palus, J.; Giurg, M.; Skarżewski, J.; Gütschow, M. Convergent Synthesis of Two Fluorescent Ebselen-Coumarin Heterodimers. Pharmaceuticals 2016, 9, 43.

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