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© 2017 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim. Thiomarinol and mupirocin are assembled on similar polyketide/fatty acid backbones and exhibit potent antibiotic activity against methicillin-resistant Staphylococcus aureus (MRSA). They both contain a tetrasubstituted tetrahydropyran (THP) ring that is essential for biological activity. Mupirocin is a mixture of pseudomonic acids (PAs). Isolation of the novel compound mupirocin P, which contains a 7-hydroxy-6-keto-substituted THP, from a ΔmupP strain and chemical complementation experiments confirm that the first step in the conversion of PA-B into the major product PA-A is oxidation at the C6 position. In addition, nine novel thiomarinol (TM) derivatives with different oxidation patterns decorating the central THP core were isolated after gene deletion (tmlF). These metabolites are in accord with the THP ring formation and elaboration in thiomarinol following a similar order to that found in mupirocin biosynthesis, despite the lack of some of the equivalent genes. Novel mupirocin–thiomarinol hybrids were also synthesized by mutasynthesis.
Author(s): Gao S-S, Wang L, Song Z, Hothersall J, Stevens ER, Connolly J, Winn PJ, Cox RJ, Crump MP, Race PR, Thomas CM, Simpson TJ, Willis CL
Publication type: Article
Publication status: Published
Journal: Angewandte Chemie - International Edition
Year: 2017
Volume: 56
Issue: 14
Pages: 3930-3934
Print publication date: 27/03/2017
Online publication date: 09/02/2017
Acceptance date: 09/02/2017
ISSN (print): 1433-7851
ISSN (electronic): 1521-3773
Publisher: Wiley-VCH Verlag
URL: https://doi.org/10.1002/anie.201611590
DOI: 10.1002/anie.201611590
PubMed id: 28181382
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