Local Anesthetics via Multicomponent Reactions.

Maria Thomaidi, Lida-Evmorfia Vagiaki, Nikolaos P Tripolitsiotis, Giasemi K Angeli, Tryfon Zarganes-Tzitzikas, Kyriaki Sidiropoulou, Constantinos G Neochoritis

ChemMedChem 2022 Aug 03

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Local anesthetics occupy a prime position in clinical medicine as they temporarily relieve the pain by blocking voltage-gated sodium channels. However, limited structural diversity, problems with the efficiency of syntheses and increasing toxicity, mean that alternative scaffolds with improved chemical syntheses are urgently needed. Here, we demonstrate a multicomponent reaction (MCR)-based approach both towards the synthesis of commercial local anesthetics and towards novel derivatives as potential anesthesia candidates via scaffold hopping. The reactions are efficient and scalable, and several single-crystal structures have been obtained. In addition, our methodology has been applied to the synthesis of the antianginal drug ranolazine, via an Ugi three-component reaction. Representative derivatives from our libraries were evaluated as neuronal activity inhibitors using local field potential recordings (LFPs) in mouse hippocampal brain slices and showed very promising results. This study highlights new opportunities in drug discovery targeting local anesthetics. © 2022 Wiley-VCH GmbH.

Citation

Maria Thomaidi, Lida-Evmorfia Vagiaki, Nikolaos P Tripolitsiotis, Giasemi K Angeli, Tryfon Zarganes-Tzitzikas, Kyriaki Sidiropoulou, Constantinos G Neochoritis. Local Anesthetics via Multicomponent Reactions. ChemMedChem. 2022 Aug 03;17(15):e202200246