Volume 11, Issue 16 p. 3760-3762
Communication

Alcohol Dehydrogenase-Triggered Oxa-Michael Reaction for the Asymmetric Synthesis of Disubstituted Tetrahydropyrans and Tetrahydrofurans

Harry Eastman

Harry Eastman

School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD UK

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Dr. James Ryan

Corresponding Author

Dr. James Ryan

School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD UK

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Dr. Beatriz Maciá

Dr. Beatriz Maciá

Faculty of Science & Engineering, Division of Chemistry & Environmental Science, Manchester Metropolitan University, Chester Street, Manchester, M1 5GD United Kingdom

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Dr. Vittorio Caprio

Dr. Vittorio Caprio

Faculty of Science & Engineering, Division of Chemistry & Environmental Science, Manchester Metropolitan University, Chester Street, Manchester, M1 5GD United Kingdom

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Dr. Elaine O'Reilly

Corresponding Author

Dr. Elaine O'Reilly

School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD UK

Current address: School of Chemistry, University College Dublin, Belfield, Dublin, 4 Ireland

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First published: 29 May 2019
Citations: 9

Graphical Abstract

Chemoenzymatic strategy: An alcohol dehydrogenase-triggered asymmetric reduction and subsequent intramolecular oxa-Michael reaction has been developed for the preparation of tetrahydropyrans (or oxanes) and tetrahydrofurans, with excellent conversion, yield and high enantiomeric and diastereomeric excess.

Abstract

An alcohol dehydrogenase-mediated asymmetric reduction and subsequent intramolecular oxa-Michael reaction has been developed for the preparation of tetrahydropyrans (or oxanes) and tetrahydrofurans, in excellent conversion, yield and high enantiomeric and diastereomeric excess. To highlight the utility of the methodology, we report the synthesis of an analogue of the fungal antioxidant brocaketone A. Also described is the preparation of the (–)-(R,R)-enantiomer of the natural product, (+)-(S,S)-(cis-6-methyltetrahydropyran-2-yl)acetic acid.