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Kloss F, Krchnak V, Krchnakova A, Schieferdecker S, Dreisbach J, Krone V, Möllmann U, Hoelscher M, Miller MJ. In Vivo Dearomatization of the Potent Antituberculosis Agent BTZ043 via Meisenheimer Complex Formation. Angew Chem Int Ed Engl 2017; 56:2187-2191. [PMID: 28097740 DOI: 10.1002/anie.201609737] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2016] [Indexed: 11/11/2022]
Abstract
Nitrobenzothiazinones are among the most potent antituberculosis agents. Herein, we disclose an unprecedented in vivo reduction process that affords Meisenheimer complexes of the clinical candidates BTZ043 and PBTZ169. The reduction is reversible, occurs in all mammalian species investigated, has a profound influence on the in vivo ADME characteristics, and has considerable implications for the design and implementation of clinical studies. The reduction was confirmed by chemical studies that enabled the complete characterization of the Meisenheimer complex and its subsequent chemistry. Combination of the in vivo and chemical studies with LC-MS characterization and assay development also provides a basis for rational lead optimization of this very promising class of antituberculosis agents.
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Affiliation(s)
- Florian Kloss
- Transfer Group Antiinfectives, Leibniz Institute for Natural Product Research and Infection Biology, HKI, Beutenbergstrasse 11a, 07745, Jena, Germany.,InfectControl 2020, Beutenbergstrasse 11a, 07745, Jena, Germany
| | - Viktor Krchnak
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, IN, 46635, USA.,Department of Organic Chemistry, Faculty of Science, Palacký University, 17. Listopadu 12, 771 46, Olomouc, Czech Republic
| | - Anna Krchnakova
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, IN, 46635, USA
| | - Sebastian Schieferdecker
- Transfer Group Antiinfectives, Leibniz Institute for Natural Product Research and Infection Biology, HKI, Beutenbergstrasse 11a, 07745, Jena, Germany.,Department of Biomolecular Chemistry, Leibniz Institute for Natural Product Research and Infection Biology, HKI, Beutenbergstrasse 11a, 07745, Jena, Germany.,InfectControl 2020, Beutenbergstrasse 11a, 07745, Jena, Germany
| | - Julia Dreisbach
- Division of Infectious Diseases and Tropical Medicine, Medical Center of the University of Munich (LMU), Leopoldstrasse 5, 80802, Munich, Germany.,German Center for Infection Research (DZIF) partner site Munich, Germany
| | - Volker Krone
- German Center for Infection Research (DZIF) partner site Munich, Germany
| | - Ute Möllmann
- Transfer Group Antiinfectives, Leibniz Institute for Natural Product Research and Infection Biology, HKI, Beutenbergstrasse 11a, 07745, Jena, Germany
| | - Michael Hoelscher
- Division of Infectious Diseases and Tropical Medicine, Medical Center of the University of Munich (LMU), Leopoldstrasse 5, 80802, Munich, Germany.,German Center for Infection Research (DZIF) partner site Munich, Germany
| | - Marvin J Miller
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, IN, 46635, USA
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