Non-Immunosuppressive Cyclophilin Inhibitors.

Cyclophilins, enzymes with peptidyl-prolyl cis/trans isomerase activity, are relevant to a large variety of biological processes. The most abundant member of this enzyme family, cyclophilin A, is the cellular receptor of the immunosuppressive drug cyclosporine A (CsA). As a consequence of the pathophysiological role of cyclophilins, particularly in viral infections, there is a broad interest in cyclophilin inhibition devoid of immunosuppressive activity. This Review first gives an introduction into the physiological and pathophysiological roles of cyclophilins. The presentation of non-immunosuppressive cyclophilin inhibitors will commence with drugs based on chemical modifications of CsA. The naturally occurring macrocyclic sanglifehrins have become other lead structures for cyclophilin-inhibiting drugs. Finally, de novo designed compounds, whose structures are not derived from or inspired by natural products, will be presented. Relevant synthetic concepts will be discussed, but the focus will also be on biochemical studies, structure-activity relationships, and clinical studies. © 2022 The Authors. Angewandte Chemie International Edition published by Wiley-VCH GmbH.

Citation

Cordelia Schiene-Fischer, Gunter Fischer, Manfred Braun. Non-Immunosuppressive Cyclophilin Inhibitors. Angewandte Chemie (International ed. in English). 2022 Aug 19;61(39):e202201597

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PMID: 35290695

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