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Triantafyllakis M, Alexander S, Woolford S, Wilson C, Clark JS. Synthesis of the A-F Fragment of the Pacific Ciguatoxin CTX3C by Iterative Ring-Closing Metathesis and Tsuji-Trost Allylation. Chemistry 2023; 29:e202303121. [PMID: 37830907 PMCID: PMC10946863 DOI: 10.1002/chem.202303121] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2023] [Revised: 10/12/2023] [Accepted: 10/13/2023] [Indexed: 10/14/2023]
Abstract
The fully functionalized A-F fragment of the Pacific ciguatoxin CTX3C has been synthesized from a derivative of D-glucal, which serves as the B-ring. Rings A and C were introduced to either side of ring B by ring-closing diene and enyne metathesis (RCM). The seven-membered D-ring and eight-membered E-ring were assembled by iterative use of a six-step reaction sequence in which RCM was used for ring construction and Tsuji-Trost allylation was employed for subsequent stereoselective functionalization. The nine-membered F-ring was formed by use of an RCM reaction and bears the functionality required for attachment of the I-M fragment and subsequent closure of rings G and H.
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Affiliation(s)
- Myron Triantafyllakis
- School of ChemistryJoseph Black BuildingUniversity of GlasgowUniversity AvenueGlasgowG12 8QQUK
| | - Sam Alexander
- School of ChemistryJoseph Black BuildingUniversity of GlasgowUniversity AvenueGlasgowG12 8QQUK
| | - Sophie Woolford
- School of ChemistryJoseph Black BuildingUniversity of GlasgowUniversity AvenueGlasgowG12 8QQUK
| | - Claire Wilson
- School of ChemistryJoseph Black BuildingUniversity of GlasgowUniversity AvenueGlasgowG12 8QQUK
| | - J. Stephen Clark
- School of ChemistryJoseph Black BuildingUniversity of GlasgowUniversity AvenueGlasgowG12 8QQUK
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Caballero MP, Carrascosa F, Cruz‐Martínez F, Castro‐Osma JA, Rodríguez AM, North M, Lara‐Sánchez A, Tejeda J. [4‐(2‐Hydroxyphenyl)imidazolium Salts as Organocatalysts for Cycloaddition of Isocyanates and Epoxides to Yield Oxazolidin‐2‐ones. ChemistrySelect 2022. [DOI: 10.1002/slct.202103977] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- María P. Caballero
- Departamento de Química Inorgánica Orgíaca y Bioquímica-Centro de Innovación en Química Avanzada (ORFEO-CINQA) Universidad de Castilla-La Mancha Facultad de Ciencias y Tecnologías Químicas 13071-Ciudad Real Spain
| | - Fernando Carrascosa
- Departamento de Química Inorgánica Orgíaca y Bioquímica-Centro de Innovación en Química Avanzada (ORFEO-CINQA) Universidad de Castilla-La Mancha Facultad de Ciencias y Tecnologías Químicas 13071-Ciudad Real Spain
| | - Felipe Cruz‐Martínez
- Departamento de Química Inorgánica Orgíaca y Bioquímica-Centro de Innovación en Química Avanzada (ORFEO-CINQA) Universidad de Castilla-La Mancha Facultad de Ciencias y Tecnologías Químicas 13071-Ciudad Real Spain
| | - José A. Castro‐Osma
- Departamento de Química Inorgánica Orgíaca y Bioquímica-Centro de Innovación en Química Avanzada (ORFEO-CINQA) Universidad de Castilla-La Mancha Facultad de Farmacia 02071 -Albacete Spain
| | - Ana M. Rodríguez
- Departamento de Química Inorgánica Orgíaca y Bioquímica-Centro de Innovación en Química Avanzada (ORFEO-CINQA) Universidad de Castilla-La Mancha Facultad de Ciencias y Tecnologías Químicas 13071-Ciudad Real Spain
| | - Michael North
- Green Chemistry Centre of Excellence Department of Chemistry The University of York Heslington York YO10 5DD UK
| | - Agustín Lara‐Sánchez
- Departamento de Química Inorgánica Orgíaca y Bioquímica-Centro de Innovación en Química Avanzada (ORFEO-CINQA) Universidad de Castilla-La Mancha Facultad de Ciencias y Tecnologías Químicas 13071-Ciudad Real Spain
| | - Juan Tejeda
- Departamento de Química Inorgánica Orgíaca y Bioquímica-Centro de Innovación en Química Avanzada (ORFEO-CINQA) Universidad de Castilla-La Mancha Facultad de Ciencias y Tecnologías Químicas 13071-Ciudad Real Spain
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Luong TM, Pilkington LI, Barker D. Total Asymmetric Synthesis and Stereochemical Confirmation of (+)- and (-)-Lyoniresinol and Its Deuterated Analogues. J Org Chem 2022; 87:4254-4262. [PMID: 35238199 DOI: 10.1021/acs.joc.1c03085] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Lyoniresinol and its derivatives are lignans which have been isolated from a plethora of plant species. In addition to exhibiting a range of interesting biological activities including anticancer, anti-inflammatory, antimicrobial, and others, these compounds have also been discovered in wines and spirits and shown to have gustatory effects in these alcoholic matrices. (+)-Lyoniresinol 1 is reported to impart a strong bitter taste while its enantiomer (-)-lyoniresnol 2 is tasteless. The first total asymmetric synthesis of both natural enantiomers (+)-1 and (-)-2 and their deuterated analogues (D4)-(+)-3 and (D4)-(-)-4 has been achieved, confirming the structure and stereochemistry of the natural products. The synthesized compounds can be utilized as internal standards in stable isotope dilution analysis for improving and optimizing the existing lyoniresinol quantitation methods in the future.
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Affiliation(s)
- Tuan Minh Luong
- School of Chemical Sciences, University of Auckland, 23 Symonds Street, Auckland 1142, New Zealand
| | - Lisa I Pilkington
- School of Chemical Sciences, University of Auckland, 23 Symonds Street, Auckland 1142, New Zealand
| | - David Barker
- School of Chemical Sciences, University of Auckland, 23 Symonds Street, Auckland 1142, New Zealand.,MacDiarmid Institute for Advanced Materials and Nanotechnology, Wellington 6021, New Zealand
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Itoh K, Odate F, Karikomi T, Obe K, Miyamori T, Kamiya H, Yoza K, Nagai K, Fujii H, Suga H, Tokunaga K. Novel asymmetric photodimerization reaction of coumarin derivatives bearing a chiral 2-oxazolidinone auxiliary. RSC Adv 2019; 9:12365-12369. [PMID: 35515875 PMCID: PMC9063662 DOI: 10.1039/c9ra00822e] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Accepted: 04/10/2019] [Indexed: 11/21/2022] Open
Abstract
A novel asymmetric photodimerization reaction of coumarin derivatives bearing the (S)-4-benzyl-2-oxazolidinone auxiliary provides only the syn-head-to-tail (syn-HT) dimer with moderate diastereoselectivity (up to 75 : 25). The mechanism of complete syn-HT selectivity and moderate diastereoselectivity is proposed based on the result of density functional theory (DFT) calculation. The benzyl group of the (S)-4-benzyl-2-oxazolidinone auxiliary in combination with a Lewis acid exerts effective diastereofacial shielding of the reaction site. Photodimerization of chiral coumarin-3-carboxamide affords the syn-HT dimer with moderate diastereoselectivity and we propose a mechanism on the basis of DFT calculations.![]()
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Guissart C, Barros A, Rosa Barata L, Evano G. Broadly Applicable Ytterbium-Catalyzed Esterification, Hydrolysis, and Amidation of Imides. Org Lett 2018; 20:5098-5102. [DOI: 10.1021/acs.orglett.8b01896] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Céline Guissart
- Laboratoire de Chimie Organique, Service de Chimie et PhysicoChimie Organiques, Université libre de Bruxelles (ULB), Avenue F. D. Roosevelt 50, CP160/06, 1050 Brussels, Belgium
| | - Andre Barros
- Laboratoire de Chimie Organique, Service de Chimie et PhysicoChimie Organiques, Université libre de Bruxelles (ULB), Avenue F. D. Roosevelt 50, CP160/06, 1050 Brussels, Belgium
| | - Luis Rosa Barata
- Laboratoire de Chimie Organique, Service de Chimie et PhysicoChimie Organiques, Université libre de Bruxelles (ULB), Avenue F. D. Roosevelt 50, CP160/06, 1050 Brussels, Belgium
| | - Gwilherm Evano
- Laboratoire de Chimie Organique, Service de Chimie et PhysicoChimie Organiques, Université libre de Bruxelles (ULB), Avenue F. D. Roosevelt 50, CP160/06, 1050 Brussels, Belgium
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Heterocyclic Chiral Auxiliaries in Total Synthesis of Natural Products. TOPICS IN HETEROCYCLIC CHEMISTRY 2018. [DOI: 10.1007/7081_2018_26] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
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Lahosa A, Soler T, Arrieta A, Cossío FP, Foubelo F, Yus M. Stereoselective Coupling of N-tert-Butanesulfinyl Aldimines and β-Keto Acids: Access to β-Amino Ketones. J Org Chem 2017; 82:7481-7491. [PMID: 28661149 DOI: 10.1021/acs.joc.7b01178] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The reaction of chiral N-tert-butanesulfinyl aldimines with β-keto acids under basic conditions at room temperature proceeds with high levels of diastereocontrol, leading to β-amino ketones in high yields. Based on DFT calculations, an eight-membered cyclic transition state involving coordination of the lithium atom to the oxygens of carboxylate and sulfinyl units was proposed, being in agreement with the observed experimental diastereomeric ratios. The synthesis of the piperidine alkaloid (-)-pelletierine was successfully undertaken in order to demonstrate the utility of this methodology.
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Affiliation(s)
- Alejandro Lahosa
- Departamento de Química Orgánica, Facultad de Ciencias, and Centro de Innovación en Química Avanzada (ORFEO-CINQA), Universidad de Alicante , Apdo. 99, 03080 Alicante, Spain.,Instituto de Síntesis Orgánica (ISO), Universidad de Alicante , Apdo. 99, 03080 Alicante, Spain
| | - Tatiana Soler
- Servicios Técnicos de Investigación, Universidad de Alicante , Apdo. 99, 03080 Alicante, Spain
| | - Ana Arrieta
- Departamento de Quı́mica Organica I and Centro de Innovación en Química Avanzada (ORFEO CINQA), University of the Basque Country (UPV/EHU) , P° Manuel Lardizabal 3, 20018 Donostia/San Sebastian, Spain
| | - Fernando P Cossío
- Departamento de Quı́mica Organica I and Centro de Innovación en Química Avanzada (ORFEO CINQA), University of the Basque Country (UPV/EHU) , P° Manuel Lardizabal 3, 20018 Donostia/San Sebastian, Spain
| | - Francisco Foubelo
- Departamento de Química Orgánica, Facultad de Ciencias, and Centro de Innovación en Química Avanzada (ORFEO-CINQA), Universidad de Alicante , Apdo. 99, 03080 Alicante, Spain.,Instituto de Síntesis Orgánica (ISO), Universidad de Alicante , Apdo. 99, 03080 Alicante, Spain
| | - Miguel Yus
- Departamento de Química Orgánica, Facultad de Ciencias, and Centro de Innovación en Química Avanzada (ORFEO-CINQA), Universidad de Alicante , Apdo. 99, 03080 Alicante, Spain
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Heravi MM, Zadsirjan V, Farajpour B. Applications of oxazolidinones as chiral auxiliaries in the asymmetric alkylation reaction applied to total synthesis. RSC Adv 2016. [DOI: 10.1039/c6ra00653a] [Citation(s) in RCA: 98] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
In this review, a number of applications of chiral oxazolidinones in the asymmetric alkylation reaction applied to total synthesis are described.
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Affiliation(s)
- Majid M. Heravi
- Department of Chemistry
- School of Science
- Alzahra University
- Tehran
- Iran
| | - Vahideh Zadsirjan
- Department of Chemistry
- School of Science
- Alzahra University
- Tehran
- Iran
| | - Behnaz Farajpour
- Department of Chemistry
- School of Science
- Alzahra University
- Tehran
- Iran
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