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Şahin E. Efficient bioreduction of 1-(furan-2-yl)ethanone into enantiomerically pure drug precursor by Lactobacillus paracasei BD101. MOLECULAR CATALYSIS 2023. [DOI: 10.1016/j.mcat.2023.113037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
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Lecachey B, Palais L, de Courcy B, Bouauli S, Durandetti M, Oulyadi H, Harisson-Marchand A, Maddaluno J, Gérard H, Vrancken E, Campagne JM. Intertwined Analytical, Experimental and Theoretical Studies on the Formation and Structure of a Copper Dienolate. Chemistry 2021; 27:7942-7950. [PMID: 33780058 DOI: 10.1002/chem.202100596] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Indexed: 11/06/2022]
Abstract
The reaction of a silyl dienolate, a Cu(II) salt and TBAT yielding the corresponding copper dienolate is addressed. A combined NMR and cyclic voltammetry analysis first highlight the role of TBAT in the Cu(II) to Cu(I) reduction and the structure of the precatalytic species. From these first results a second set of NMR and theoretical studies enable the determination of the structure and the mechanism of formation of the copper dienolate catalytic species. Finally, we showed that that the copper catalyst promote the E/Z s-cis/s-trans equilibration of the silyl dienolate precursor through a copper dienolate intermediate. All of these results unveil some peculiarities of the catalytic and asymmetric vinylogous Mukaiyama reaction.
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Affiliation(s)
| | - Laetitia Palais
- Normandie Univ., UNIROUEN, INSA Rouen, CNRS, Laboratoire COBRA (UMR 6014 & FR 3038), 76000, Rouen, France
| | - Benoît de Courcy
- Sorbonne Université, CNRS, Laboratoire de Chimie Théorique, LCT, 75005, Paris, France
| | - Samira Bouauli
- Sorbonne Université, CNRS, Laboratoire de Chimie Théorique, LCT, 75005, Paris, France
| | - Muriel Durandetti
- Normandie Univ., UNIROUEN, INSA Rouen, CNRS, Laboratoire COBRA (UMR 6014 & FR 3038), 76000, Rouen, France
| | - Hassan Oulyadi
- Normandie Univ., UNIROUEN, INSA Rouen, CNRS, Laboratoire COBRA (UMR 6014 & FR 3038), 76000, Rouen, France
| | - Anne Harisson-Marchand
- Normandie Univ., UNIROUEN, INSA Rouen, CNRS, Laboratoire COBRA (UMR 6014 & FR 3038), 76000, Rouen, France
| | - Jacques Maddaluno
- Normandie Univ., UNIROUEN, INSA Rouen, CNRS, Laboratoire COBRA (UMR 6014 & FR 3038), 76000, Rouen, France
| | - Hélène Gérard
- Sorbonne Université, CNRS, Laboratoire de Chimie Théorique, LCT, 75005, Paris, France
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Avula SK, Das B, Csuk R, Al-Rawahi A, Al-Harrasi A. Recent Advances in the Stereoselective Total Synthesis of Natural Pyranones Having Long Side Chains. Molecules 2020; 25:molecules25081905. [PMID: 32326105 PMCID: PMC7221952 DOI: 10.3390/molecules25081905] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2020] [Revised: 04/13/2020] [Accepted: 04/17/2020] [Indexed: 11/16/2022] Open
Abstract
Pyranone natural products have attracted great attention in recent years from chemists and biologists due to their fascinating stereoisomeric structural features and impressive bioactivities. A large number of stereoselective total syntheses of these compounds have been described in the literature. The natural pyranones with long side chains have recently received significant importance in the synthetic field. In the present article, we aim to review the modern progress of the stereoselective total syntheses of these natural pyranones containing long-chain substituents.
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Affiliation(s)
- Satya Kumar Avula
- Natural and Medical Sciences Research Center, University of Nizwa, P.O. Box 33, Birkat Al Mauz 616, Nizwa, Oman; (S.K.A.); (B.D.); (A.A.-R.)
| | - Biswanath Das
- Natural and Medical Sciences Research Center, University of Nizwa, P.O. Box 33, Birkat Al Mauz 616, Nizwa, Oman; (S.K.A.); (B.D.); (A.A.-R.)
| | - Rene Csuk
- Organic Chemistry, Martin-Luther-University Halle-Wittenberg, Kurt-Mothes-Str. 2, d-06120 Halle (Saale), Germany;
| | - Ahmed Al-Rawahi
- Natural and Medical Sciences Research Center, University of Nizwa, P.O. Box 33, Birkat Al Mauz 616, Nizwa, Oman; (S.K.A.); (B.D.); (A.A.-R.)
| | - Ahmed Al-Harrasi
- Natural and Medical Sciences Research Center, University of Nizwa, P.O. Box 33, Birkat Al Mauz 616, Nizwa, Oman; (S.K.A.); (B.D.); (A.A.-R.)
- Correspondence: , Tel.: +968-25446328
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