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Mao F, Jin C, Wang J, Yang H, Yan X, Li X, Xu X. A one-step base-free synthesis of N-arylamides via modified pivaloyl mixed anhydride mediated amide coupling. Org Biomol Chem 2023; 21:3825-3828. [PMID: 37083033 DOI: 10.1039/d3ob00452j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/22/2023]
Abstract
Pivalic anhydride is shown to be an effective reagent for direct amidation of carboxylic acids with N-alkyl anilines. The only by-product of this reaction is nontoxic pivalic acid, which can be easily removed by aqueous workup. The reactions are conducted under mild conditions and found to be compatible with a range of carboxylic acids, including aromatic, heterocyclic, acrylic, and aliphatic carboxylic acids and amino acids generating the desired amides in short reaction times.
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Affiliation(s)
- Fenghua Mao
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China.
| | - Can Jin
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China.
| | - Jie Wang
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China.
| | - Hui Yang
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China.
| | - Xinhuan Yan
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China.
| | - Xiaoqing Li
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China.
| | - Xiangsheng Xu
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China.
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Hohmann T, Dyrks M, Chowdhary S, Weber M, Nguyen D, Moschner J, Koksch B. Gram-Scale Asymmetric Synthesis of Fluorinated Amino Acids Using a Chiral Nickel(II) Complex. J Org Chem 2022; 87:10592-10604. [PMID: 35926217 DOI: 10.1021/acs.joc.2c00522] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Fluorinated amino acids play an important role in the field of peptide and protein engineering. Although numerous syntheses have been published in recent decades, strategies that allow routine access to fluorinated amino acids on a gram-scale have been poorly described. Furthermore, the described pathways that gain fluorinated amino acids are based on different synthetic strategies, making a uniform approach that uses similar starting materials highly beneficial. Chiral Ni(II) complexes were introduced as powerful tools in the synthesis of noncanonical amino acids. In this work, we present a strategy for the synthesis of a diverse range of fluorinated amino acids based on the corresponding Ni(II) complex from which the products can be obtained in enantiopure form (99% ee) on a gram-scale. In addition, we describe an optimized procedure for the synthesis of alkyl iodide building blocks that are required for the alkylation reactions with the corresponding Ni(II) complex. Finally, we characterized the synthesized fluorinated amino acids with regard to their hydrophobicity and α-helix propensity.
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Affiliation(s)
- Thomas Hohmann
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Arnimallee 20, Berlin, 14195Berlin, Germany
| | - Michael Dyrks
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Arnimallee 20, Berlin, 14195Berlin, Germany
| | - Suvrat Chowdhary
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Arnimallee 20, Berlin, 14195Berlin, Germany
| | - Manuela Weber
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Fabeckstraße 34/36, Berlin, 14195Berlin, Germany
| | - Duy Nguyen
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Arnimallee 20, Berlin, 14195Berlin, Germany
| | - Johann Moschner
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Arnimallee 20, Berlin, 14195Berlin, Germany
| | - Beate Koksch
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Arnimallee 20, Berlin, 14195Berlin, Germany
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Magano J. Large-Scale Amidations in Process Chemistry: Practical Considerations for Reagent Selection and Reaction Execution. Org Process Res Dev 2022. [DOI: 10.1021/acs.oprd.2c00005] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Javier Magano
- Chemical Research & Development, Pfizer Worldwide Research & Development, Eastern Point Road, Groton, Connecticut 06340, United States
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Moschner J, Stulberg V, Fernandes R, Huhmann S, Leppkes J, Koksch B. Approaches to Obtaining Fluorinated α-Amino Acids. Chem Rev 2019; 119:10718-10801. [PMID: 31436087 DOI: 10.1021/acs.chemrev.9b00024] [Citation(s) in RCA: 171] [Impact Index Per Article: 34.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Fluorine does not belong to the pool of chemical elements that nature uses to build organic matter. However, chemists have exploited the unique properties of fluorine and produced countless fluoro-organic compounds without which our everyday lives would be unimaginable. The incorporation of fluorine into amino acids established a completely new class of amino acids and their properties, and those of the biopolymers constructed from them are extremely interesting. Increasing interest in this class of amino acids caused the demand for robust and stereoselective synthetic protocols that enable straightforward access to these building blocks. Herein, we present a comprehensive account of the literature in this field going back to 1995. We place special emphasis on a particular fluorination strategy. The four main sections describe fluorinated versions of alkyl, cyclic, aromatic amino acids, and also nickel-complexes to access them. We progress by one carbon unit increments. Special cases of amino acids for which there is no natural counterpart are described at the end of each section. Synthetic access to each of the amino acids is summarized in form of a table at the end of this article with the aim to make the information easily accessible to the reader.
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Affiliation(s)
- Johann Moschner
- Department of Biology, Chemistry and Pharmacy, Institute of Chemistry and Biochemistry , Freie Universität Berlin , Takustr. 3 , 14195 Berlin , Germany
| | - Valentina Stulberg
- Department of Biology, Chemistry and Pharmacy, Institute of Chemistry and Biochemistry , Freie Universität Berlin , Takustr. 3 , 14195 Berlin , Germany
| | - Rita Fernandes
- Department of Biology, Chemistry and Pharmacy, Institute of Chemistry and Biochemistry , Freie Universität Berlin , Takustr. 3 , 14195 Berlin , Germany
| | - Susanne Huhmann
- Department of Biology, Chemistry and Pharmacy, Institute of Chemistry and Biochemistry , Freie Universität Berlin , Takustr. 3 , 14195 Berlin , Germany
| | - Jakob Leppkes
- Department of Biology, Chemistry and Pharmacy, Institute of Chemistry and Biochemistry , Freie Universität Berlin , Takustr. 3 , 14195 Berlin , Germany
| | - Beate Koksch
- Department of Biology, Chemistry and Pharmacy, Institute of Chemistry and Biochemistry , Freie Universität Berlin , Takustr. 3 , 14195 Berlin , Germany
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5
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Dunetz JR, Magano J, Weisenburger GA. Large-Scale Applications of Amide Coupling Reagents for the Synthesis of Pharmaceuticals. Org Process Res Dev 2016. [DOI: 10.1021/op500305s] [Citation(s) in RCA: 411] [Impact Index Per Article: 51.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Joshua R. Dunetz
- Process
Chemistry, Gilead Sciences, 333 Lakeside Drive, Foster City, California 94404, United States
| | - Javier Magano
- Chemical Research & Development, Pfizer Worldwide Research & Development, Eastern Point Road, Groton, Connecticut 06340, United States
| | - Gerald A. Weisenburger
- Chemical Research & Development, Pfizer Worldwide Research & Development, Eastern Point Road, Groton, Connecticut 06340, United States
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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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Biava H, Budisa N. Obtention of enantiomerically pure 5,5,5-trifluoro-l-isoleucine and 5,5,5-trifluoro-l-alloisoleucine. J Fluor Chem 2013. [DOI: 10.1016/j.jfluchem.2013.07.021] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Erdbrink H, Nyakatura EK, Huhmann S, Gerling UIM, Lentz D, Koksch B, Czekelius C. Synthesis of enantiomerically pure (2S,3S)-5,5,5-trifluoroisoleucine and (2R,3S)-5,5,5-trifluoro-allo-isoleucine. Beilstein J Org Chem 2013; 9:2009-2014. [PMID: 24204411 PMCID: PMC3817528 DOI: 10.3762/bjoc.9.236] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2013] [Accepted: 09/11/2013] [Indexed: 12/26/2022] Open
Abstract
A practical route for the stereoselective synthesis of (2S,3S)-5,5,5-trifluoroisoleucine (L-5-F3Ile) and (2R,3S)-5,5,5-trifluoro-allo-isoleucine (D-5-F3-allo-Ile) was developed. The hydrophobicity of L-5-F3Ile was examined and it was incorporated into a model peptide via solid phase peptide synthesis to determine its α-helix propensity. The α-helix propensity of 5-F3Ile is significantly lower than Ile, but surprisingly high when compared with 4’-F3Ile.
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Affiliation(s)
- Holger Erdbrink
- Department of Chemistry and Biochemistry, Freie Universität Berlin, Takustr. 3, 14195 Berlin, Germany
| | - Elisabeth K Nyakatura
- Department of Chemistry and Biochemistry, Freie Universität Berlin, Takustr. 3, 14195 Berlin, Germany
| | - Susanne Huhmann
- Department of Chemistry and Biochemistry, Freie Universität Berlin, Takustr. 3, 14195 Berlin, Germany
| | - Ulla I M Gerling
- Department of Chemistry and Biochemistry, Freie Universität Berlin, Takustr. 3, 14195 Berlin, Germany
| | - Dieter Lentz
- Department of Chemistry and Biochemistry, Freie Universität Berlin, Takustr. 3, 14195 Berlin, Germany
| | - Beate Koksch
- Department of Chemistry and Biochemistry, Freie Universität Berlin, Takustr. 3, 14195 Berlin, Germany
| | - Constantin Czekelius
- Department of Chemistry and Biochemistry, Freie Universität Berlin, Takustr. 3, 14195 Berlin, Germany
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Magano J, Dunetz JR. Large-Scale Carbonyl Reductions in the Pharmaceutical Industry. Org Process Res Dev 2012. [DOI: 10.1021/op2003826] [Citation(s) in RCA: 292] [Impact Index Per Article: 24.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Javier Magano
- Chemical Research and Development, Pharmaceutical Sciences, Pfizer Worldwide Research and Development, Eastern Point Road, Groton, Connecticut 06340, United States
| | - Joshua R. Dunetz
- Chemical Research and Development, Pharmaceutical Sciences, Pfizer Worldwide Research and Development, Eastern Point Road, Groton, Connecticut 06340, United States
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Rezende P, Paioti PHS, Coelho F. Diastereoselective Approach to Substituted Oxazolidinones from Morita–Baylis–Hillman Adducts. SYNTHETIC COMMUN 2010. [DOI: 10.1080/00397910903534023] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Patrícia Rezende
- a Laboratory of Synthesis of Natural Products and Drugs, Department of Organic Chemistry , Chemistry Institute, University of Campinas , Campinas, Brazil
| | - Paulo H. S. Paioti
- a Laboratory of Synthesis of Natural Products and Drugs, Department of Organic Chemistry , Chemistry Institute, University of Campinas , Campinas, Brazil
| | - Fernando Coelho
- a Laboratory of Synthesis of Natural Products and Drugs, Department of Organic Chemistry , Chemistry Institute, University of Campinas , Campinas, Brazil
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Kreft AF, Martone R, Porte A. Recent advances in the identification of gamma-secretase inhibitors to clinically test the Abeta oligomer hypothesis of Alzheimer's disease. J Med Chem 2009; 52:6169-88. [PMID: 19694467 DOI: 10.1021/jm900188z] [Citation(s) in RCA: 82] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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12
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López Ó, Zafra E, Maya I, Fuentes J, Diánez MJ, Estrada MD, Pérez-Garrido S, Fernández-Bolaños JG. cis-Fused bicyclic sugar thiocarbamates. Reactivity towards amines. Tetrahedron 2008. [DOI: 10.1016/j.tet.2008.09.093] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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