1
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McCourt RO, Scanlan EM. Radical‐Mediated Approaches for the Synthesis of Thiolactones. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100996] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Ruairí O. McCourt
- Department School of Chemistry Trinity Biomedical Sciences Institute (TBSI) The University of Dublin Dublin 2 Ireland
| | - Eoin M. Scanlan
- Department School of Chemistry Trinity Biomedical Sciences Institute (TBSI) The University of Dublin Dublin 2 Ireland
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2
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McCourt RO, Scanlan EM. Atmospheric Oxygen Mediated Radical Hydrothiolation of Alkenes. Chemistry 2020; 26:15804-15810. [DOI: 10.1002/chem.202002542] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Revised: 06/08/2020] [Indexed: 11/11/2022]
Affiliation(s)
- Ruairí O. McCourt
- School of Chemistry Trinity Biomedical Sciences Institute (TBSI) Trinity College Dublin The University of Dublin Dublin 2 Ireland
| | - Eoin M. Scanlan
- School of Chemistry Trinity Biomedical Sciences Institute (TBSI) Trinity College Dublin The University of Dublin Dublin 2 Ireland
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3
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Jiang S, Hsieh W, Chen W, Liao J, Chiang P, Lin YA. Synthesis of Thiol‐Containing Oligopeptides via Tandem Activation of γ‐Thiolactones by Silver‐DABCO Pair. ASIAN J ORG CHEM 2020. [DOI: 10.1002/ajoc.202000310] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Sheng‐Yuan Jiang
- Department of Chemistry National Sun Yat-sen University Kaohsiung 804 Taiwan
| | - Wen‐Tsai Hsieh
- Department of Chemistry National Sun Yat-sen University Kaohsiung 804 Taiwan
| | - Wei‐Shuo Chen
- Department of Chemistry National Sun Yat-sen University Kaohsiung 804 Taiwan
| | - Jia‐Shiang Liao
- Department of Chemistry National Sun Yat-sen University Kaohsiung 804 Taiwan
| | - Po‐Yu Chiang
- Department of Chemistry National Sun Yat-sen University Kaohsiung 804 Taiwan
| | - Yuya A. Lin
- Department of Chemistry National Sun Yat-sen University Kaohsiung 804 Taiwan
- Department of Medicinal and Applied Chemistry Kaohsiung Medical University Kaohsiung 807 Taiwan
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4
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Dhanju S, Upadhyaya K, Rice CA, Pegan SD, Media J, Valeriote FA, Crich D. Synthesis, Cytotoxicity, and Genotoxicity of 10-Aza-9-oxakalkitoxin, an N,N,O-Trisubstituted Hydroxylamine Analog, or Hydroxalog, of a Marine Natural Product. J Am Chem Soc 2020; 142:9147-9151. [DOI: 10.1021/jacs.0c03763] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Sandeep Dhanju
- Department of Chemistry, Wayne State University, 5101 Cass Avenue, Detroit, Michigan 48202, United States
| | - Kapil Upadhyaya
- Department of Pharmaceutical and Biomedical Sciences, University of Georgia, 250 West Green Street, Athens, Georgia 30602, United States
| | - Christopher A. Rice
- Department of Pharmaceutical and Biomedical Sciences, University of Georgia, 250 West Green Street, Athens, Georgia 30602, United States
| | - Scott D. Pegan
- Department of Pharmaceutical and Biomedical Sciences, University of Georgia, 250 West Green Street, Athens, Georgia 30602, United States
| | - Joseph Media
- Department of Internal Medicine, Division of Hematology and Oncology, Henry Ford Cancer Institute, Detroit, Michigan 48202, United States
| | - Frederick A. Valeriote
- Department of Internal Medicine, Division of Hematology and Oncology, Henry Ford Cancer Institute, Detroit, Michigan 48202, United States
| | - David Crich
- Department of Chemistry, Wayne State University, 5101 Cass Avenue, Detroit, Michigan 48202, United States
- Department of Pharmaceutical and Biomedical Sciences, University of Georgia, 250 West Green Street, Athens, Georgia 30602, United States
- Department of Chemistry, University of Georgia, 140 Cedar Street, Athens, Georgia 30602, United States,
- Complex Carbohydrate Research Center, University of Georgia, 315 Riverbend Road, Athens, Georgia 30602, United States
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5
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McCourt R, Scanlan EM. 5‐
exo versus
6‐
endo
Thiyl‐Radical Cyclizations in Organic Synthesis. Helv Chim Acta 2019. [DOI: 10.1002/hlca.201900162] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Ruairí McCourt
- Trinity Biomedical Sciences Institute (TBSI), Trinity College DublinThe University of Dublin, Dublin 2 Ireland
| | - Eoin M. Scanlan
- Trinity Biomedical Sciences Institute (TBSI), Trinity College DublinThe University of Dublin, Dublin 2 Ireland
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6
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McCourt RO, Scanlan EM. A Sequential Acyl Thiol-Ene and Thiolactonization Approach for the Synthesis of δ-Thiolactones. Org Lett 2019; 21:3460-3464. [PMID: 31013100 DOI: 10.1021/acs.orglett.9b01271] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
A novel strategy for the synthesis of δ-thiolactones from inexpensive and readily available γ-unsaturated esters has been developed. This strategy incorporates a radical acyl thiol-ene reaction as the key C-S bond forming step. Cyclization is achieved via a Steglich-type thiolactonization of 5-mercaptopentanoic acids. We report the facile and scalable synthesis of δ-thiolactones in moderate to good yield under mild reaction conditions with tolerance for a range of functional groups.
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Affiliation(s)
- Ruairí O McCourt
- Trinity Biomedical Sciences Institute (TBSI) , Trinity College Dublin, The University of Dublin , Dublin 2, Ireland
| | - Eoin M Scanlan
- Trinity Biomedical Sciences Institute (TBSI) , Trinity College Dublin, The University of Dublin , Dublin 2, Ireland
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7
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Guo W, Tao K, Tan W, Zhao M, Zheng L, Fan X. Recent advances in photocatalytic C–S/P–S bond formation via the generation of sulfur centered radicals and functionalization. Org Chem Front 2019. [DOI: 10.1039/c8qo01353e] [Citation(s) in RCA: 68] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
In this review, we have focused on the recent advances in photocatalytic C–S/P–S bond formation via the generation of thioyl/sulfonyl radicals and further functionalization.
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Affiliation(s)
- Wei Guo
- Key Laboratory of Organo-pharmaceutical Chemistry of Jiangxi Province
- Gannan Normal University
- Ganzhou 341000
- China
| | - Kailiang Tao
- Key Laboratory of Organo-pharmaceutical Chemistry of Jiangxi Province
- Gannan Normal University
- Ganzhou 341000
- China
| | - Wen Tan
- Key Laboratory of Organo-pharmaceutical Chemistry of Jiangxi Province
- Gannan Normal University
- Ganzhou 341000
- China
| | - Mingming Zhao
- Key Laboratory of Organo-pharmaceutical Chemistry of Jiangxi Province
- Gannan Normal University
- Ganzhou 341000
- China
| | - Lvyin Zheng
- Key Laboratory of Organo-pharmaceutical Chemistry of Jiangxi Province
- Gannan Normal University
- Ganzhou 341000
- China
| | - Xiaolin Fan
- Key Laboratory of Organo-pharmaceutical Chemistry of Jiangxi Province
- Gannan Normal University
- Ganzhou 341000
- China
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8
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McCourt RO, Dénès F, Sanchez-Sanz G, Scanlan EM. Rapid Access to Thiolactone Derivatives through Radical-Mediated Acyl Thiol–Ene and Acyl Thiol–Yne Cyclization. Org Lett 2018; 20:2948-2951. [DOI: 10.1021/acs.orglett.8b00996] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ruairi O. McCourt
- Trinity Biomedical Sciences Institute (TBSI), Trinity College Dublin, The University of Dublin, Dublin 2, Ireland
| | - Fabrice Dénès
- Université de Nantes, CEISAM UMR CNRS 6230 UFR des Sciences et des Techniques -2 rue de la Houssinière, Nantes BP 92208-44322 Cedex 3, France
| | - Goar Sanchez-Sanz
- Irish Centre for High-End Computing, Floor 7, Tower Building, Trinity Technology & Enterprise Campus, Grand Canal Quay, Dublin 2, Ireland
| | - Eoin M. Scanlan
- Trinity Biomedical Sciences Institute (TBSI), Trinity College Dublin, The University of Dublin, Dublin 2, Ireland
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9
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Chen H, Xiao Y, Yuan N, Weng J, Gao P, Breindel L, Shekhtman A, Zhang Q. Coupling of sterically demanding peptides by β-thiolactone-mediated native chemical ligation. Chem Sci 2018; 9:1982-1988. [PMID: 29675245 PMCID: PMC5892351 DOI: 10.1039/c7sc04744d] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2017] [Accepted: 01/02/2018] [Indexed: 12/30/2022] Open
Abstract
The ligation of sterically demanding peptidyl sites such as those involving Val-Val and Val-Pro linkages has proven to be extremely challenging with conventional NCL methods that rely on exogenous thiol additives. Herein, we report an efficient β-thiolactone-mediated additive-free NCL protocol that enables the establishment of these connections in good yield. The rapid NCL was followed by in situ desulfurization. Reaction rates between β-thiolactones and conventional thioesters towards NCL were also investigated, and direct aminolysis was ruled out as a possible pathway. Finally, the potent cytotoxic cyclic-peptide axinastatin 1 has been prepared using the developed methodology.
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Affiliation(s)
- Huan Chen
- Department of Chemistry , University at Albany , State University of New York , 1400 Washington Avenue , Albany , NY 12222 , USA .
| | - Yunxian Xiao
- Department of Chemistry , University at Albany , State University of New York , 1400 Washington Avenue , Albany , NY 12222 , USA .
| | - Ning Yuan
- State Key Laboratory of Natural and Biomimetic Drugs , School of Pharmaceutical Sciences , Peking University , 38 Xueyuan Road , Beijing 100191 , China
| | - Jiaping Weng
- Department of Chemistry , University at Albany , State University of New York , 1400 Washington Avenue , Albany , NY 12222 , USA .
| | - Pengcheng Gao
- Department of Chemistry , University at Albany , State University of New York , 1400 Washington Avenue , Albany , NY 12222 , USA .
| | - Leonard Breindel
- Department of Chemistry , University at Albany , State University of New York , 1400 Washington Avenue , Albany , NY 12222 , USA
| | - Alexander Shekhtman
- Department of Chemistry , University at Albany , State University of New York , 1400 Washington Avenue , Albany , NY 12222 , USA
| | - Qiang Zhang
- Department of Chemistry , University at Albany , State University of New York , 1400 Washington Avenue , Albany , NY 12222 , USA .
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10
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Yang HB, Yuan YC, Wei Y, Shi M. Amine-catalyzed tunable reactions of allenoates with dithioesters: formal [4+2] and [2+2] cycloadditions for the synthesis of 2,3-dihydro-1,4-oxathiines and enantioenriched thietanes. Chem Commun (Camb) 2015; 51:6430-3. [PMID: 25766965 DOI: 10.1039/c5cc01313e] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The chemoselective [4+2] vs. [2+2] cycloaddition between allenoates and dithioesters can be controlled by switching the nucleophilic amine catalyst. The two modes of cyclizations represent the first example of controllable and chemoselective annulations between allenoates and dienophiles catalyzed by amine. These cyclizations are useful in offering a divergent synthesis of sulfur-containing heterocycles. On the basis of this investigation, it can be realized that dithioesters with a vicinal electron-withdrawing group can react not only like a Michael acceptor but also as a ketone or imine.
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Affiliation(s)
- Hai-Bin Yang
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, P. R. China.
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11
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Noel A, Delpech B, Crich D. Chemistry of the β-thiolactones: substituent and solvent effects on thermal decomposition and comparison with the β-lactones. J Org Chem 2014; 79:4068-77. [PMID: 24716459 DOI: 10.1021/jo500577c] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The synthesis of a series of di-, tri-, and tetraalkyl β-thiolactones and β-lactones is described as well as their thermal decomposition with extrusion of carbon oxysulfide and carbon dioxide in two solvents of opposite polarities. The β-thiolactones are considerably more thermally stable than the β-lactones and require higher temperatures for efficient decomposition in both solvents, whatever the degree of substitution. The results are interpreted in terms of a zwitterionic mechanism for fragmentation with a change in the rate-determining step between the two series.
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Affiliation(s)
- Amandine Noel
- Centre de Recherche de Gif, Institut de Chimie des Substances Naturelles, CNRS , Avenue de la Terrasse, 91190 Gif-sur-Yvette, France
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Affiliation(s)
- Amandine Noel
- a Centre de Recherche de Gif, Institut de Chimie des Substances Naturelles, CNRS , Avenue de la Terrasse, 91190 , Gif-Sur-Yvette , France
| | - Bernard Delpech
- a Centre de Recherche de Gif, Institut de Chimie des Substances Naturelles, CNRS , Avenue de la Terrasse, 91190 , Gif-Sur-Yvette , France
| | - David Crich
- a Centre de Recherche de Gif, Institut de Chimie des Substances Naturelles, CNRS , Avenue de la Terrasse, 91190 , Gif-Sur-Yvette , France
- b Department of Chemistry , Wayne State University , 5101 Cass Avenue, Detroit , MI , 48202 , USA
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13
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Noel A, Delpech B, Crich D. Comparison of the reactivity of β-thiolactones and β-lactones toward ring-opening by thiols and amines. Org Biomol Chem 2012; 10:6480-3. [PMID: 22751994 DOI: 10.1039/c2ob25640a] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
An investigation into the comparative reactivity of simple β-lactones and β-thiolactones toward a thiol and a primary amine is reported. A simple 3-mercaptomethyl-2-oxetanone is found to undergo rearrangement in the presence of aqueous base to give the corresponding thietane-3-carboxylic acid rather than the 3-hydroxymethyl-2-thietanone. Implications for the use of β-thiolactones in bioorganic and medicinal chemistry are discussed.
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Affiliation(s)
- Amandine Noel
- Centre de Recherche de Gif, Institut de Chimie des Substances Naturelles, CNRS, 1 Avenue de la Terrasse, 91190 Gif-sur-Yvette, France
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14
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Aubry S, Aubert G, Cresteil T, Crich D. Synthesis and biological investigation of the β-thiolactone and β-lactam analogs of tetrahydrolipstatin. Org Biomol Chem 2012; 10:2629-32. [DOI: 10.1039/c2ob06976h] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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