|
1
|
Jeanmard L, Lodovici G, George I, Bray JTW, Whitwood AC, Thomas GH, Fairlamb IJS, Unsworth WP, Clarke PA. Stereoselective synthesis of an advanced trans-decalin intermediate towards the total synthesis of anthracimycin. Chem Commun (Camb) 2024; 60:5699-5702. [PMID: 38726842 PMCID: PMC11131352 DOI: 10.1039/d4cc01738b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2024] [Accepted: 05/03/2024] [Indexed: 05/29/2024]
Abstract
Progress towards the total synthesis of the macrolide natural product anthracimycin is described. This new approach utilises an intermolecular Diels-Alder strategy followed by epimeirsation to form the key trans-decalin framework. The route culminates in the stereoselective synthesis of an advanced tricyclic lactone intermediate, containing five contiguous sterogenic centres with the correct relative and absolute stereochemistry required for the anthracimycin core motif.
Collapse
Affiliation(s)
- Laksamee Jeanmard
- Department of Chemistry, University of York, Heslington, York, YO10 5DD, UK.
| | - Giacomo Lodovici
- Department of Chemistry, University of York, Heslington, York, YO10 5DD, UK.
| | - Ian George
- Department of Chemistry, University of York, Heslington, York, YO10 5DD, UK.
| | - Joshua T W Bray
- Department of Chemistry, University of York, Heslington, York, YO10 5DD, UK.
| | - Adrian C Whitwood
- Department of Chemistry, University of York, Heslington, York, YO10 5DD, UK.
| | - Gavin H Thomas
- Department of Biology, University of York, Heslington, York, YO10 5DD, UK
| | - Ian J S Fairlamb
- Department of Chemistry, University of York, Heslington, York, YO10 5DD, UK.
| | - William P Unsworth
- Department of Chemistry, University of York, Heslington, York, YO10 5DD, UK.
| | - Paul A Clarke
- Department of Chemistry, University of York, Heslington, York, YO10 5DD, UK.
| |
Collapse
|
|
2
|
Hilker S, Posevins D, Unelius CR, Bäckvall JE. Chemoenzymatic Dynamic Kinetic Asymmetric Transformations of β-Hydroxyketones. Chemistry 2021; 27:15623-15627. [PMID: 34428339 PMCID: PMC9293354 DOI: 10.1002/chem.202102683] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Indexed: 11/17/2022]
Abstract
Herein we report on the development and application of chemoenzymatic Dynamic Kinetic Asymmetric Transformation (DYKAT) of α‐substituted β‐hydroxyketones (β‐HKs), using Candida antartica lipase B (CALB) as transesterification catalyst and a ruthenium complex as epimerization catalyst. An operationally simple protocol allows for an efficient preparation of highly enantiomerically enriched α‐substituted β‐oxoacetates. The products were obtained in yields up to 95 % with good diastereomeric ratios.
Collapse
Affiliation(s)
- Simon Hilker
- Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University, 10691, Stockholm, Sweden
| | - Daniels Posevins
- Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University, 10691, Stockholm, Sweden
| | - C Rikard Unelius
- Department of Chemistry and Biomedical Science, Linnaeus University, 39231, Kalmar, Sweden
| | - Jan-E Bäckvall
- Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University, 10691, Stockholm, Sweden
| |
Collapse
|