1
|
Nasiri B, Pasdar G, Zebrowski P, Röser K, Naderer D, Waser M. Towards an asymmetric β-selective addition of azlactones to allenoates. Beilstein J Org Chem 2024; 20:1504-1509. [PMID: 38978748 PMCID: PMC11228823 DOI: 10.3762/bjoc.20.134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2024] [Accepted: 06/24/2024] [Indexed: 07/10/2024] Open
Abstract
We herein report the asymmetric organocatalytic addition of azlactones to allenoates. Upon using chiral quaternary ammonium salt catalysts, i.e., Maruoka's binaphthyl-based spirocyclic ammonium salts, the addition of various azlactones to allenoates proceeds in a β-selective manner with moderate levels of enantioselectivities (up to 83:17 er). Furthermore, the obtained products can be successfully engaged in nucleophilic ring opening reactions, thus giving highly functionalized α-amino acid derivatives.
Collapse
Affiliation(s)
- Behzad Nasiri
- Institute of Organic Chemistry, Johannes Kepler University Linz, Altenbergerstrasse 69, 4040 Linz, Austria
- Department of Chemistry, Faculty of Science, University of Kurdistan, 66177-15175 Sanandaj, Kurdistan, Iran
| | - Ghaffar Pasdar
- Institute of Organic Chemistry, Johannes Kepler University Linz, Altenbergerstrasse 69, 4040 Linz, Austria
| | - Paul Zebrowski
- Institute of Organic Chemistry, Johannes Kepler University Linz, Altenbergerstrasse 69, 4040 Linz, Austria
| | - Katharina Röser
- Institute of Organic Chemistry, Johannes Kepler University Linz, Altenbergerstrasse 69, 4040 Linz, Austria
| | - David Naderer
- Institute of Organic Chemistry, Johannes Kepler University Linz, Altenbergerstrasse 69, 4040 Linz, Austria
| | - Mario Waser
- Institute of Organic Chemistry, Johannes Kepler University Linz, Altenbergerstrasse 69, 4040 Linz, Austria
| |
Collapse
|
2
|
Nosovska O, Liebing P, Vilotijevic I. Synthesis of β-Amino Acid Derivatives via Enantioselective Lewis Base Catalyzed N-Allylation of Halogenated Amides with Morita-Baylis-Hillman Carbonates. Chemistry 2024; 30:e202304014. [PMID: 38116835 DOI: 10.1002/chem.202304014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2023] [Revised: 12/18/2023] [Accepted: 12/19/2023] [Indexed: 12/21/2023]
Abstract
Trifluoro- and trichloroacetamides serving as pronucleophiles undergo enantioselective Lewis base catalyzed N-allylation with Morita-Baylis-Hillman carbonates to produce enantioenriched β-amino acid derivatives. The reactions proceed as a kinetic resolution to give the allylation products and the remaining carbonates in good yields and high enantioselectivity. The obtained products are amenable to diastereoselective derivatization to produce a library of spiro-isoxazoline lactams.
Collapse
Affiliation(s)
- Olena Nosovska
- Institute for Organic Chemistry and Macromolecular Chemistry, Friedrich Schiller University Jena, Humboldtstrasse 10, 07743, Jena, Germany
| | - Phil Liebing
- Institute of Inorganic and Analytical Chemistry, Friedrich Schiller University Jena, Humboldtstrasse 8, 07743, Jena, Germany
| | - Ivan Vilotijevic
- Institute for Organic Chemistry and Macromolecular Chemistry, Friedrich Schiller University Jena, Humboldtstrasse 10, 07743, Jena, Germany
| |
Collapse
|
3
|
Qin Y, Wang Y, Deng R, Pei Z, Xiong HY, Wang T, Zhang G. Straightforward Access to Free β 2,3,3 -Amino Acids through One Pot C-H Activation/C-C Cleavage. Chemistry 2024:e202304254. [PMID: 38236073 DOI: 10.1002/chem.202304254] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Revised: 01/16/2024] [Accepted: 01/18/2024] [Indexed: 01/19/2024]
Abstract
The first synthesis of unnatural β2,3,3 -amino acids with a spirocyclic backbone by one-pot protocol has been presented. This reaction features wide functional group tolerance and feasibility of post-functionalization of natural products and biologically important molecules. Novel dipeptide and tripeptide structures were assembled using this newly developed β2,3,3 -amino acid in high efficiency. The combination of C-H activation and C-C cleavage for the synthesis of β-amino acids would trigger more promising synthetic routes for this compound.
Collapse
Affiliation(s)
- Yibo Qin
- College of Chemistry and Chemical Engineering, Henan University, Kaifeng, 475004, P.R. China
| | - Yaping Wang
- College of Chemistry and Chemical Engineering, Henan University, Kaifeng, 475004, P.R. China
| | - Ruwendan Deng
- College of Chemistry and Chemical Engineering, Henan University, Kaifeng, 475004, P.R. China
| | - Zengkai Pei
- Tianjin Kailiqi Biopharma Technology Co., Ltd, Tianjin, 300190, P.R. China
| | - Heng-Ying Xiong
- College of Chemistry and Chemical Engineering, Henan University, Kaifeng, 475004, P.R. China
| | - Teng Wang
- College of Chemistry, Beijing University of Chemical Technology, Beijing, 100029, P. R. China
| | - Guangwu Zhang
- College of Chemistry and Chemical Engineering, Henan University, Kaifeng, 475004, P.R. China
| |
Collapse
|
4
|
Liu N, Feng J, Chen X, Luo Y, Lv T, Wu Q, Zhu D. Reshaping the Substrate Binding Pocket of β-Amino Acid Dehydrogenase for the Synthesis of Aromatic β-Amino Acids. Org Lett 2023; 25:8469-8473. [PMID: 37972311 DOI: 10.1021/acs.orglett.3c03366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2023]
Abstract
By reshaping the substrate-binding pocket of β-amino acid dehydrogenase (β-AADH), some variants were obtained with up to 2560-fold enhanced activity toward the model substrates (S)-β-homophenylalanine and (R)-β-phenylalanine. A few aromatic β-amino acids were prepared with >99% ee and high isolated yields via either kinetic resolution of racemates or reductive amination of the corresponding β-keto acids. This work expands the catalytic capability of β-AADHs and highlights their practical application in the synthesis of pharmaceutically relevant β-amino acids.
Collapse
Affiliation(s)
- Na Liu
- National Engineering Research Center of Industrial Enzymes, Tianjin Engineering Research Center of Biocatalytic Technology, Key Laboratory of Engineering Biology for Low-Carbon Manufacturing, National Center of Technology Innovation for Synthetic Biology, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin 300308, China
| | - Jinhui Feng
- National Engineering Research Center of Industrial Enzymes, Tianjin Engineering Research Center of Biocatalytic Technology, Key Laboratory of Engineering Biology for Low-Carbon Manufacturing, National Center of Technology Innovation for Synthetic Biology, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin 300308, China
| | - Xi Chen
- National Engineering Research Center of Industrial Enzymes, Tianjin Engineering Research Center of Biocatalytic Technology, Key Laboratory of Engineering Biology for Low-Carbon Manufacturing, National Center of Technology Innovation for Synthetic Biology, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin 300308, China
| | - Yuyang Luo
- National Engineering Research Center of Industrial Enzymes, Tianjin Engineering Research Center of Biocatalytic Technology, Key Laboratory of Engineering Biology for Low-Carbon Manufacturing, National Center of Technology Innovation for Synthetic Biology, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin 300308, China
- School of Biotechnology, Key Lab of Industrial Fermentation Microbiology of the Ministry of Education, State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Tong Lv
- National Engineering Research Center of Industrial Enzymes, Tianjin Engineering Research Center of Biocatalytic Technology, Key Laboratory of Engineering Biology for Low-Carbon Manufacturing, National Center of Technology Innovation for Synthetic Biology, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin 300308, China
| | - Qiaqing Wu
- National Engineering Research Center of Industrial Enzymes, Tianjin Engineering Research Center of Biocatalytic Technology, Key Laboratory of Engineering Biology for Low-Carbon Manufacturing, National Center of Technology Innovation for Synthetic Biology, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin 300308, China
| | - Dunming Zhu
- National Engineering Research Center of Industrial Enzymes, Tianjin Engineering Research Center of Biocatalytic Technology, Key Laboratory of Engineering Biology for Low-Carbon Manufacturing, National Center of Technology Innovation for Synthetic Biology, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin 300308, China
| |
Collapse
|
5
|
Hart AP, DeGraw CJ, Rustin GJ, Donahue MG, Pigza JA. Squaramide Organocatalyzed Addition of a Masked Acyl Cyanide to β-Nitrostyrenes. J Org Chem 2023; 88:16666-16670. [PMID: 37966138 DOI: 10.1021/acs.joc.3c01838] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2023]
Abstract
A method for the squaramide-organocatalyzed enantioselective addition of a silyl-protected masked acyl cyanide (MAC) reagent to various β-nitrostyrenes is described. Reactions are carried out in a freezer and provide products cleanly and in high enantioselectivities at very low catalyst loadings. Adducts are then unmasked, providing various oxidation state 3 functional groups, thereby highlighting the utility of these MAC reagents and a new strategy for the preparation of β-amino acids.
Collapse
Affiliation(s)
- Alison P Hart
- Department of Chemistry and Biochemistry, The University of Southern Mississippi, Hattiesburg, Mississippi 39406, United States
| | - Caroline J DeGraw
- Department of Chemistry and Biochemistry, The University of Southern Mississippi, Hattiesburg, Mississippi 39406, United States
| | - Gavin J Rustin
- Department of Chemistry and Biochemistry, The University of Southern Mississippi, Hattiesburg, Mississippi 39406, United States
| | - Matthew G Donahue
- Department of Chemistry and Biochemistry, The University of Southern Mississippi, Hattiesburg, Mississippi 39406, United States
| | - Julie A Pigza
- Department of Chemistry and Biochemistry, The University of Southern Mississippi, Hattiesburg, Mississippi 39406, United States
| |
Collapse
|
6
|
Tanaka N, Zhu JL, Valencia OL, Schull CR, Scheidt KA. Cooperative Carbene Photocatalysis for β-Amino Ester Synthesis. J Am Chem Soc 2023. [PMID: 37906227 DOI: 10.1021/jacs.3c09875] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2023]
Abstract
β-Amino acids are useful building blocks of bioactive molecules, including peptidomimetics and pharmaceutical compounds. The current limited accessibility to β2,2-type amino acids which bear an α-quaternary center has limited their use in chemical synthesis and biological investigations. Disclosed herein is the development of a new N-heterocyclic carbene/photocatalyzed aminocarboxylation of olefins, affording β2,2-amino esters with high regioselectivity. The generation of nitrogen-centered radicals derived from simple imides via a sequence of deprotonation and single-electron oxidation allows for the subsequent addition to geminal-disubstituted olefins regioselectively. The intermediate tertiary radicals then cross-couple with a stabilized azolium-based radical generated in situ to efficiently construct the quaternary centers. Mechanistic studies, including Stern-Volmer fluorescence quenching experiments, support the proposed catalytic cycle.
Collapse
Affiliation(s)
- Nao Tanaka
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Joshua L Zhu
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Oniya L Valencia
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Cullen R Schull
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Karl A Scheidt
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| |
Collapse
|
7
|
Palillero-Cisneros A, Gordillo-Guerra PG, García-Alvarez F, Jackowski O, Ferreira F, Chemla F, Terán JL, Perez-Luna A. α-(Aminomethyl)acrylates as acceptors in radical-polar crossover 1,4-additions of dialkylzincs: insights into enolate formation and trapping. Beilstein J Org Chem 2023; 19:1443-1451. [PMID: 37767333 PMCID: PMC10520473 DOI: 10.3762/bjoc.19.103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Accepted: 09/12/2023] [Indexed: 09/29/2023] Open
Abstract
We demonstrate that α-(aminomethyl)acrylates are suitable acceptors for 1,4-additions of dialkylzincs in aerobic conditions. The air-promoted radical-polar crossover process involves the 1,4-addition of an alkyl radical followed by homolytic substitution at the zinc atom of dialkylzinc. Coordination of the nitrogen atom to zinc enables this SH2 process which represents a rare example of alkylzinc-group transfer to a tertiary α-carbonyl radical. The zinc enolate thus formed readily undergoes β-fragmentation unless it is trapped by electrophiles in situ. Enolates of substrates having free N-H bonds undergo protodemetalation to provide ultimately the 1,4-addition adduct. In the presence of carbonyl acceptors, aldol condensation occurs providing overall a tandem 1,4-addition-aldol process. When a tert-butanesulfinyl moiety is present on the nitrogen atom, these electrophilic substitution reactions occur with good levels of chiral induction, paving the way to enantioenriched β2-amino acids and β2,2-amino acids.
Collapse
Affiliation(s)
- Angel Palillero-Cisneros
- Sorbonne Université, CNRS, Institut Parisien de Chimie Moléculaire, IPCM. 4 place Jussieu, 75005 Paris, France
- Benemérita Universidad Autonóma de Puebla, Instituto de Ciencias, ICUAP, Edificio IC-9, Complejo de Ciencias, C.U., 72570, Puebla, México
| | - Paola G Gordillo-Guerra
- Sorbonne Université, CNRS, Institut Parisien de Chimie Moléculaire, IPCM. 4 place Jussieu, 75005 Paris, France
- Benemérita Universidad Autonóma de Puebla, Instituto de Ciencias, ICUAP, Edificio IC-9, Complejo de Ciencias, C.U., 72570, Puebla, México
- (current adress) Universidad Autónoma Metropolitana, Unidad Xochimilco, Departamento de Sistemas Biológicos, Ciudad de México, C.P., 04690, México
| | - Fernando García-Alvarez
- Sorbonne Université, CNRS, Institut Parisien de Chimie Moléculaire, IPCM. 4 place Jussieu, 75005 Paris, France
- Benemérita Universidad Autonóma de Puebla, Instituto de Ciencias, ICUAP, Edificio IC-9, Complejo de Ciencias, C.U., 72570, Puebla, México
| | - Olivier Jackowski
- Sorbonne Université, CNRS, Institut Parisien de Chimie Moléculaire, IPCM. 4 place Jussieu, 75005 Paris, France
| | - Franck Ferreira
- Sorbonne Université, CNRS, Institut Parisien de Chimie Moléculaire, IPCM. 4 place Jussieu, 75005 Paris, France
| | - Fabrice Chemla
- Sorbonne Université, CNRS, Institut Parisien de Chimie Moléculaire, IPCM. 4 place Jussieu, 75005 Paris, France
| | - Joel L Terán
- Benemérita Universidad Autonóma de Puebla, Instituto de Ciencias, ICUAP, Edificio IC-9, Complejo de Ciencias, C.U., 72570, Puebla, México
| | - Alejandro Perez-Luna
- Sorbonne Université, CNRS, Institut Parisien de Chimie Moléculaire, IPCM. 4 place Jussieu, 75005 Paris, France
| |
Collapse
|
8
|
Zebrowski P, Röser K, Chrenko D, Pospíšil J, Waser M. Enantioselective β-Selective Addition of Isoxazolidin-5-ones to Allenoates Catalyzed by Quaternary Ammonium Salts. SYNTHESIS-STUTTGART 2023; 55:1706-1713. [PMID: 38855403 PMCID: PMC7616069 DOI: 10.1055/a-1948-5493] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Abstract
The enantioselective addition of isoxazolidin-5-ones to the β-carbon of allenoates has been carried out by using a novel spirobiindane-based quaternary ammonium salt catalyst. This protocol, which proceeds under classical liquid-solid phase-transfer conditions, gives access to unprecedented highly functionalized β2,2-amino acid derivatives with good enantioselectivities and in high yields, and further manipulations of these products have been carried out as well.
Collapse
Affiliation(s)
- Paul Zebrowski
- Institute of Organic Chemistry, Johannes Kepler University Linz, Altenbergerstrasse 69, 4040 Linz, Austria
| | - Katharina Röser
- Institute of Organic Chemistry, Johannes Kepler University Linz, Altenbergerstrasse 69, 4040 Linz, Austria
| | - Daniel Chrenko
- Department of Chemical Biology, Faculty of Science, Palacký University, Šlechtitelů 27, 783 71 Olomouc, Czech Republic
| | - Jiří Pospíšil
- Department of Chemical Biology, Faculty of Science, Palacký University, Šlechtitelů 27, 783 71 Olomouc, Czech Republic
- Laboratory of Growth Regulators, Palacký University & Institute of Experimental Botany AS CR, Šlechtitelů 27, 783 71 Olomouc, Czech Republic
| | - Mario Waser
- Institute of Organic Chemistry, Johannes Kepler University Linz, Altenbergerstrasse 69, 4040 Linz, Austria
| |
Collapse
|
9
|
Suzuki H, Kondo S, Yamada K, Matsuda T. Diastereo- and Enantioselective Reductive Mannich-type Reaction of α,β-Unsaturated Carboxylic Acids to Ketimines: A Direct Entry to Unprotected β 2,3,3 -Amino Acids. Chemistry 2023; 29:e202202575. [PMID: 36341524 PMCID: PMC10107894 DOI: 10.1002/chem.202202575] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Revised: 11/05/2022] [Accepted: 11/07/2022] [Indexed: 11/09/2022]
Abstract
Stereoselective construction of unprotected β-amino acids is a significant challenge owing to the lack of methods for the catalytic generation of highly enantioenriched carboxylic acid enolates. In this study, a novel copper-catalyzed diastereo- and enantioselective reductive Mannich-type reaction of α,β-unsaturated carboxylic acids was developed, which provides a direct and scalable synthetic method for enantioenriched β2,3,3 -amino acids with vicinal stereogenic centers. The protocol features in situ generation of transiently protected carboxylic acids by a hydrosilane and their diastereo- and enantioselective reductive coupling with ketimines. The synthetic utility of this process was demonstrated by a gram-scale reaction and the transformation of β-amino acids.
Collapse
Affiliation(s)
- Hirotsugu Suzuki
- Department of Applied Chemistry, Tokyo University of Science, 1-3 Kagrazaka, Shinjuku-ku, Tokyo, 162-8601, Japan
| | - Sora Kondo
- Department of Applied Chemistry, Tokyo University of Science, 1-3 Kagrazaka, Shinjuku-ku, Tokyo, 162-8601, Japan
| | - Koichiro Yamada
- Department of Applied Chemistry, Tokyo University of Science, 1-3 Kagrazaka, Shinjuku-ku, Tokyo, 162-8601, Japan
| | - Takanori Matsuda
- Department of Applied Chemistry, Tokyo University of Science, 1-3 Kagrazaka, Shinjuku-ku, Tokyo, 162-8601, Japan
| |
Collapse
|
10
|
Serusi L, Zebrowski P, Schörgenhumer J, Massa A, Waser M. Stereoselective Syntheses of Masked β-Amino Acid Containing Phthalides. Helv Chim Acta 2022; 105:e202200110. [PMID: 36845268 PMCID: PMC7614226 DOI: 10.1002/hlca.202200110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
We herein report a protocol for the asymmetric aldol-initiated cascade addition of isoxazolidin-5-ones to ortho-cyanobenzaldehydes by using Takemoto's bifunctional organocatalyst. This approach allows for the synthesis of various novel β2,2-amino acid-phthalide conjugates with good enantio- and diastereoselectivities in reasonable yields and the further ring-opening of these compounds to acyclic carboxylic acid derivatives was demonstrated too.
Collapse
Affiliation(s)
- Lorenzo Serusi
- Institute of Organic Chemistry, Johannes Kepler University Linz, Altenbergerstr. 69, AT-4040 Linz, Austria,Dipartimento di Chimica e Biologia “A. Zambelli”, Università degli Studi di Salerno, Via Giovanni Paolo II, IT-84084-Fisciano (SA), Italy
| | - Paul Zebrowski
- Institute of Organic Chemistry, Johannes Kepler University Linz, Altenbergerstr. 69, AT-4040 Linz, Austria
| | - Johannes Schörgenhumer
- Department of Chemistry, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
| | - Antonio Massa
- Dipartimento di Chimica e Biologia “A. Zambelli”, Università degli Studi di Salerno, Via Giovanni Paolo II, IT-84084-Fisciano (SA), Italy
| | - Mario Waser
- Institute of Organic Chemistry, Johannes Kepler University Linz, Altenbergerstr. 69, AT-4040 Linz, Austria,
| |
Collapse
|
11
|
Feng M, Mosiagin I, Kaiser D, Maryasin B, Maulide N. Deployment of Sulfinimines in Charge-Accelerated Sulfonium Rearrangement Enables a Surrogate Asymmetric Mannich Reaction. J Am Chem Soc 2022; 144:13044-13049. [PMID: 35839521 PMCID: PMC9374180 DOI: 10.1021/jacs.2c05368] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
β-Amino acid derivatives are key structural elements in synthetic and biological chemistry. Despite being a hallmark method for their preparation, the direct Mannich reaction encounters significant challenges when carboxylic acid derivatives are employed. Indeed, not only is chemoselective enolate formation a pitfall (particularly with carboxamides), but most importantly the inability to reliably access α-tertiary amines through an enolate/ketimine coupling is an unsolved problem of this century-old reaction. Herein, we report a strategy enabling the first direct coupling of carboxamides with ketimines for the diastereo- and enantioselective synthesis of β-amino amides. This conceptually novel approach hinges on the innovative deployment of enantiopure sulfinimines in sulfonium rearrangements, and at once solves the problems of chemoselectivity, reactivity, and (relative and absolute) stereoselectivity of the Mannich process. In-depth computational studies explain the observed, unexpected (dia)stereoselectivity and showcase the key role of intramolecular interactions, including London dispersion, for the accurate description of the reaction mechanism.
Collapse
Affiliation(s)
- Minghao Feng
- Institute of Organic Chemistry, University of Vienna, Währinger Strasse 38, 1090 Vienna, Austria
| | - Ivan Mosiagin
- Institute of Organic Chemistry, University of Vienna, Währinger Strasse 38, 1090 Vienna, Austria
| | - Daniel Kaiser
- Institute of Organic Chemistry, University of Vienna, Währinger Strasse 38, 1090 Vienna, Austria
| | - Boris Maryasin
- Institute of Organic Chemistry, University of Vienna, Währinger Strasse 38, 1090 Vienna, Austria.,Institute of Theoretical Chemistry, University of Vienna, Währinger Strasse 17, 1090 Vienna, Austria
| | - Nuno Maulide
- Institute of Organic Chemistry, University of Vienna, Währinger Strasse 38, 1090 Vienna, Austria
| |
Collapse
|
12
|
Tokuhiro Y, Yoshikawa K, Murayama S, Nanjo T, Takemoto Y. Highly Stereoselective, Organocatalytic Mannich-type Addition of Glyoxylate Cyanohydrin: A Versatile Building Block for the Asymmetric Synthesis of β-Amino-α-ketoacids. ACS Catal 2022. [DOI: 10.1021/acscatal.2c00950] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yusuke Tokuhiro
- Graduate School of Pharmaceutical Sciences, Kyoto University, Yoshida,
Sakyo-ku, Kyoto 606-8501, Japan
| | - Kosuke Yoshikawa
- Graduate School of Pharmaceutical Sciences, Kyoto University, Yoshida,
Sakyo-ku, Kyoto 606-8501, Japan
| | - Sei Murayama
- Graduate School of Pharmaceutical Sciences, Kyoto University, Yoshida,
Sakyo-ku, Kyoto 606-8501, Japan
| | - Takeshi Nanjo
- Graduate School of Pharmaceutical Sciences, Kyoto University, Yoshida,
Sakyo-ku, Kyoto 606-8501, Japan
| | - Yoshiji Takemoto
- Graduate School of Pharmaceutical Sciences, Kyoto University, Yoshida,
Sakyo-ku, Kyoto 606-8501, Japan
| |
Collapse
|
13
|
Lee M, Heo J, Kim D, Chang S. On the Origin of Rh-Catalyzed Selective Ring-Opening Amidation of Substituted Cyclopropanols to Access β 2-Amino Ketones. J Am Chem Soc 2022; 144:3667-3675. [PMID: 35167292 DOI: 10.1021/jacs.1c12934] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
β2-Amino carbonyls, an α-substituted β-amino scaffold, hold a prominent place in the development of new pharmaceuticals and peptidomimetics. Herein, we report a highly efficient Rh-catalyzed ring-opening amidation of substituted cyclopropanols, which turned out to serve as a linchpin for the selective synthesis of β2-amino ketones to outcompete the formation of β3-isomers. Instead of the generally accepted rationale to consider steric factors for the β2-selectivity, orbital interaction was elucidated to play a more critical role in the amidative ring-opening of cyclopropanols to generate the key Rh-C intermediate. Subsequent inner-sphere acylnitrene transfer was achieved in excellent efficiency (TON > 5000) by using readily accessible dioxazolones as the amino source to afford β2-amino ketones with broad applicability.
Collapse
Affiliation(s)
- Minhan Lee
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Korea.,Center for Catalytic Hydrocarbon Functionalization, Institute for Basic Science (IBS), Daejeon 34141, Korea
| | - Joon Heo
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Korea.,Center for Catalytic Hydrocarbon Functionalization, Institute for Basic Science (IBS), Daejeon 34141, Korea
| | - Dongwook Kim
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Korea.,Center for Catalytic Hydrocarbon Functionalization, Institute for Basic Science (IBS), Daejeon 34141, Korea
| | - Sukbok Chang
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Korea.,Center for Catalytic Hydrocarbon Functionalization, Institute for Basic Science (IBS), Daejeon 34141, Korea
| |
Collapse
|
14
|
Haider V, Zebrowski P, Michalke J, Monkowius U, Waser M. Enantioselective organocatalytic syntheses of α-selenated α- and β-amino acid derivatives. Org Biomol Chem 2022; 20:824-830. [PMID: 35015015 PMCID: PMC8790592 DOI: 10.1039/d1ob02235k] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Accepted: 01/03/2022] [Indexed: 12/22/2022]
Abstract
Selenium-containing amino acids are valuable targets but methods for the stereoselective α-selenation of simple amino acid precursors are rare. We herein report the enantioselective electrophilic α-selenation of azlactones (masked α-amino acid derivatives) and isoxazolidin-5-ones (masked β-amino acids) using Cinchona alkaloids as easily accessible organocatalysts. A variety of differently substituted derivatives was accessed with reasonable levels of enantioselectivities and further studies concerning the stability and suitability of these compounds for further manipulations have been carried out as well.
Collapse
Affiliation(s)
- Victoria Haider
- Institute of Organic Chemistry, Johannes Kepler University Linz, Altenbergerstrasse 69, 4040 Linz, Austria.
| | - Paul Zebrowski
- Institute of Organic Chemistry, Johannes Kepler University Linz, Altenbergerstrasse 69, 4040 Linz, Austria.
| | - Jessica Michalke
- Institute of Catalysis, Johannes Kepler University Linz, Altenbergerstrasse 69, 4040 Linz, Austria
| | - Uwe Monkowius
- School of Education, Chemistry, Johannes Kepler University Linz, Altenbergerstrasse 69, 4040 Linz, Austria
| | - Mario Waser
- Institute of Organic Chemistry, Johannes Kepler University Linz, Altenbergerstrasse 69, 4040 Linz, Austria.
| |
Collapse
|
15
|
Mikhailov IE, Dushenko GA, Minkin VI. Pentacarboxycyclopentadienes in Organic Synthesis. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2021. [DOI: 10.1134/s1070428021110014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
16
|
Noda H. Imbuing an Old Heterocycle with the Power of Modern Catalysis: An Isoxazolidin-5-one Story. Chem Pharm Bull (Tokyo) 2021; 69:1160-1169. [PMID: 34853282 DOI: 10.1248/cpb.c21-00750] [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] [Indexed: 11/22/2022]
Abstract
Isoxazolidin-5-ones have been regarded as β-amino acid surrogates owing to their labile N-O bond. While many efforts have been devoted to the catalytic enantioselective synthesis of the core of this heterocycle, its further transformation has been less explored, especially in the context of catalysis. This review summarizes the author's research on the development of catalytic reactions using isoxazolidin-5-ones as substrates. Asymmetric catalysis has proven effective for C-C bond formation at the carbonyl α-carbon. Catalytic asymmetric allylation and direct Mannich-type reactions have been developed. Further, the resulting products have been readily converted into the corresponding quaternary β2,2-amino acids. Moreover, isoxazolidin-5-ones have been identified as alkyl nitrene precursors in the presence of a suitable metal catalyst. The generated metallonitrene undergoes either the electrophilic amination of the aromatic ring or aliphatic C-H insertion, affording a series of cyclic β-amino acids. A remarkable difference in chemoselectivity between rhodium and copper alkyl nitrenes has also been demonstrated, highlighting the unique nature of the underexplored reactive intermediates. The various linear and cyclic β-amino acids obtained through the study are likely to find great utility in a broad range of chemical sciences.
Collapse
|
17
|
Trujillo C, Cronin SA, Connon SJ. Mechanistic Insights into the Organocatalytic Kinetic Resolution of Oxazinones through Alcoholysis. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100818] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Cristina Trujillo
- Trinity Biomedical Sciences Institute School of Chemistry The University of Dublin Trinity College Dublin 2 Ireland
| | - Sarah A. Cronin
- Trinity Biomedical Sciences Institute School of Chemistry The University of Dublin Trinity College Dublin 2 Ireland
| | - Stephen J. Connon
- Trinity Biomedical Sciences Institute School of Chemistry The University of Dublin Trinity College Dublin 2 Ireland
| |
Collapse
|
18
|
Tak RK, Noda H, Shibasaki M. Ligand-Enabled, Copper-Catalyzed Electrophilic Amination for the Asymmetric Synthesis of β-Amino Acids. Org Lett 2021; 23:8617-8621. [PMID: 34689558 DOI: 10.1021/acs.orglett.1c03328] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Catalytic asymmetric nitrene transfer has emerged as a reliable method for the synthesis of nitrogen-containing chiral compounds. Herein, we report the copper-catalyzed intramolecular asymmetric electrophilic amination of aromatic rings. The reactive intermediate is a copper-alkyl nitrene generated from isoxazolidin-5-ones. Copper catalysis promotes three classes of asymmetric transformations, namely, asymmetric desymmetrization, parallel kinetic resolution, and kinetic resolution, expanding the repertoire of alkyl nitrene transfer and providing various cyclic and linear β-amino acids in their enantioenriched forms.
Collapse
Affiliation(s)
- Raj K Tak
- Institute of Microbial Chemistry (BIKAKEN), 3-14-23 Kamiosaki, Shinagawa-ku, Tokyo 141-0021, Japan
| | - Hidetoshi Noda
- Institute of Microbial Chemistry (BIKAKEN), 3-14-23 Kamiosaki, Shinagawa-ku, Tokyo 141-0021, Japan
| | - Masakatsu Shibasaki
- Institute of Microbial Chemistry (BIKAKEN), 3-14-23 Kamiosaki, Shinagawa-ku, Tokyo 141-0021, Japan
| |
Collapse
|
19
|
Enantioselective formal carbene insertion into C–N bond of aminal as a concise track to chiral α-amino-β2,2-amino acids and synthetic applications. GREEN SYNTHESIS AND CATALYSIS 2021. [DOI: 10.1016/j.gresc.2021.10.007] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
|
20
|
Peng Q, Yan B, Li F, Lang M, Zhang B, Guo D, Bierer D, Wang J. Biomimetic enantioselective synthesis of β,β-difluoro-α-amino acid derivatives. Commun Chem 2021; 4:148. [PMID: 36697625 PMCID: PMC9814941 DOI: 10.1038/s42004-021-00586-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Accepted: 10/06/2021] [Indexed: 01/28/2023] Open
Abstract
Although utilization of fluorine compounds has a long history, synthesis of chiral fluorinated amino acid derivatives with structural diversity and high stereoselectivity is still very appealing and challenging. Here, we report a biomimetic study of enantioselective [1,3]-proton shift of β,β-difluoro-α-imine amides catalyzed by chiral quinine derivatives. A wide range of corresponding β,β-difluoro-α-amino amides were achieved in good yields with high enantioselectivities. The optically pure β,β-difluoro-α-amino acid derivatives were further obtained, which have high application values in the synthesis of fluoro peptides, fluoro amino alcohols and other valuable fluorine-containing molecules.
Collapse
Affiliation(s)
- Qiupeng Peng
- grid.12527.330000 0001 0662 3178School of Pharmaceutical Sciences, Department of Chemistry, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases Key Laboratory of Bioorganic Phosphorous Chemistry and Chemical Biology (Ministry of Education), Tsinghua University, 100084 Beijing, China
| | - Bingjia Yan
- grid.12527.330000 0001 0662 3178School of Pharmaceutical Sciences, Department of Chemistry, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases Key Laboratory of Bioorganic Phosphorous Chemistry and Chemical Biology (Ministry of Education), Tsinghua University, 100084 Beijing, China ,grid.418832.40000 0001 0610 524XPresent Address: Leibniz-Forchungsinstituts für Molekulare Pharmakologies (FMP), 13125 Berlin, Germany
| | - Fangyi Li
- grid.12527.330000 0001 0662 3178School of Pharmaceutical Sciences, Department of Chemistry, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases Key Laboratory of Bioorganic Phosphorous Chemistry and Chemical Biology (Ministry of Education), Tsinghua University, 100084 Beijing, China
| | - Ming Lang
- grid.12527.330000 0001 0662 3178School of Pharmaceutical Sciences, Department of Chemistry, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases Key Laboratory of Bioorganic Phosphorous Chemistry and Chemical Biology (Ministry of Education), Tsinghua University, 100084 Beijing, China
| | - Bei Zhang
- grid.12527.330000 0001 0662 3178School of Pharmaceutical Sciences, Department of Chemistry, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases Key Laboratory of Bioorganic Phosphorous Chemistry and Chemical Biology (Ministry of Education), Tsinghua University, 100084 Beijing, China
| | - Donghui Guo
- grid.12527.330000 0001 0662 3178School of Pharmaceutical Sciences, Department of Chemistry, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases Key Laboratory of Bioorganic Phosphorous Chemistry and Chemical Biology (Ministry of Education), Tsinghua University, 100084 Beijing, China
| | - Donald Bierer
- grid.420044.60000 0004 0374 4101Department of Medicinal Chemistry, Bayer AG, Aprather Weg 18A, 42096 Wuppertal, Germany
| | - Jian Wang
- grid.12527.330000 0001 0662 3178School of Pharmaceutical Sciences, Department of Chemistry, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases Key Laboratory of Bioorganic Phosphorous Chemistry and Chemical Biology (Ministry of Education), Tsinghua University, 100084 Beijing, China
| |
Collapse
|
21
|
Affiliation(s)
- Hidetoshi Noda
- Institute of Microbial Chemistry 3-14-23 Kamiosaki, Shinagaku-ku Tokyo 141-0021 Japan
| | - Xinxin Tang
- Institute of Microbial Chemistry 3-14-23 Kamiosaki, Shinagaku-ku Tokyo 141-0021 Japan
| | - Masakatsu Shibasaki
- Institute of Microbial Chemistry 3-14-23 Kamiosaki, Shinagaku-ku Tokyo 141-0021 Japan
| |
Collapse
|
22
|
Zebrowski P, Eder I, Eitzinger A, Mallojjala SC, Waser M. Enantioselective Catalytic Synthesis of α-Halogenated α-Aryl-β 2,2-amino Acid Derivatives. ACS ORGANIC & INORGANIC AU 2021; 2:34-43. [PMID: 35141714 PMCID: PMC8815071 DOI: 10.1021/acsorginorgau.1c00025] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Revised: 09/13/2021] [Accepted: 09/13/2021] [Indexed: 01/22/2023]
Abstract
The enantioselective synthesis of a broad variety of novel differently functionalized α-halogenated α-aryl-β2,2-amino acid derivatives by means of an ammonium-salt-catalyzed asymmetric α-halogenation of isoxazolidin-5-ones was accomplished. Key to success to obtain high levels of enantioselectivities was the use of Maruoka's spirocyclic binaphthyl-based ammonium salts, and detailed accompanying mechanistic studies using density functional theory methods revealed the key features for the catalyst-substrate interactions.
Collapse
Affiliation(s)
- Paul Zebrowski
- Institute
of Organic Chemistry, Johannes Kepler University
Linz, Altenbergerstrasse 69, 4040 Linz, Austria
| | - Isabella Eder
- Institute
of Organic Chemistry, Johannes Kepler University
Linz, Altenbergerstrasse 69, 4040 Linz, Austria
| | - Andreas Eitzinger
- Institute
of Organic Chemistry, Johannes Kepler University
Linz, Altenbergerstrasse 69, 4040 Linz, Austria
| | - Sharath Chandra Mallojjala
- Department
of Chemistry, State University of New York
at Binghamton, Binghamton, New York 13902, United States,
| | - Mario Waser
- Institute
of Organic Chemistry, Johannes Kepler University
Linz, Altenbergerstrasse 69, 4040 Linz, Austria,Phone: +4373224685411.
| |
Collapse
|
23
|
Larionova NA, Ondozabal JM, Smith EG, Cambeiro XC. A Photocatalytic Regioselective Direct Hydroaminoalkylation of Aryl-Substituted Alkenes with Amines. Org Lett 2021; 23:5383-5388. [PMID: 34197124 DOI: 10.1021/acs.orglett.1c01715] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A photocatalytic method for the α-selective hydroaminoalkylation of cinnamate esters has been developed. The reaction involves the regioselective addition of α-aminoalkyl radicals generated from aniline derivatives or aliphatic amines to the α-position of unsaturated esters. The scope of aromatic alkenes was extended to styrenes undergoing hydroaminoalkylation with anti-Markovnikov selectivity, which confirms the importance of the aromatic group at the β-position. Simple scale-up is demonstrated under continuous flow conditions, highlighting the practicality of the method.
Collapse
Affiliation(s)
- Natalia A Larionova
- Department of Chemistry, School of Biological and Chemical Sciences, Queen Mary University of London, Mile End Road, London, E1 4NS, United Kingdom
| | - Jun Miyatake Ondozabal
- Department of Chemistry, School of Biological and Chemical Sciences, Queen Mary University of London, Mile End Road, London, E1 4NS, United Kingdom
| | - Emily G Smith
- Department of Chemistry, School of Biological and Chemical Sciences, Queen Mary University of London, Mile End Road, London, E1 4NS, United Kingdom
| | - Xacobe C Cambeiro
- School of Science, University of Greenwich. Chatham Maritime, ME4 4TB, United Kingdom.,Department of Chemistry, School of Biological and Chemical Sciences, Queen Mary University of London, Mile End Road, London, E1 4NS, United Kingdom
| |
Collapse
|
24
|
Zhao F, Shu C, Young CM, Carpenter‐Warren C, Slawin AMZ, Smith AD. Enantioselective Synthesis of α-Aryl-β 2 -Amino-Esters by Cooperative Isothiourea and Brønsted Acid Catalysis. Angew Chem Int Ed Engl 2021; 60:11892-11900. [PMID: 33646631 PMCID: PMC8252622 DOI: 10.1002/anie.202016220] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2020] [Indexed: 01/07/2023]
Abstract
The synthesis of α-aryl-β2 -amino esters through enantioselective aminomethylation of an arylacetic acid ester in high yields and enantioselectivity via cooperative isothiourea and Brønsted acid catalysis is demonstrated. The scope and limitations of this process are explored (25 examples, up to 94 % yield and 96:4 er), with applications to the synthesis of (S)-Venlafaxine⋅HCl and (S)-Nakinadine B. Mechanistic studies are consistent with a C(1)-ammonium enolate pathway being followed rather than an alternative dynamic kinetic resolution process. Control studies indicate that (i) a linear effect between catalyst and product er is observed; (ii) an acyl ammonium ion can be used as a precatalyst; (iii) reversible isothiourea addition to an in situ generated iminium ion leads to an off-cycle intermediate that can be used as a productive precatalyst.
Collapse
Affiliation(s)
- Feng Zhao
- EaStCHEMSchool of ChemistryUniversity of St AndrewsSt AndrewsFifeKY16 9STUK
| | - Chang Shu
- EaStCHEMSchool of ChemistryUniversity of St AndrewsSt AndrewsFifeKY16 9STUK
| | - Claire M. Young
- EaStCHEMSchool of ChemistryUniversity of St AndrewsSt AndrewsFifeKY16 9STUK
| | | | | | - Andrew D. Smith
- EaStCHEMSchool of ChemistryUniversity of St AndrewsSt AndrewsFifeKY16 9STUK
| |
Collapse
|
25
|
Zhao F, Shu C, Young CM, Carpenter‐Warren C, Slawin AMZ, Smith AD. Enantioselective Synthesis of α‐Aryl‐β
2
‐Amino‐Esters by Cooperative Isothiourea and Brønsted Acid Catalysis. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202016220] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Feng Zhao
- EaStCHEM School of Chemistry University of St Andrews St Andrews Fife KY16 9ST UK
| | - Chang Shu
- EaStCHEM School of Chemistry University of St Andrews St Andrews Fife KY16 9ST UK
| | - Claire M. Young
- EaStCHEM School of Chemistry University of St Andrews St Andrews Fife KY16 9ST UK
| | | | | | - Andrew D. Smith
- EaStCHEM School of Chemistry University of St Andrews St Andrews Fife KY16 9ST UK
| |
Collapse
|
26
|
Murakami H, Yamada A, Michigami K, Takemoto Y. Novel Aza‐Michael Addition‐Asymmetric Protonation to α,β‐Unsaturated Carboxylic Acids with Chiral Thiourea‐Boronic Acid Hybrid Catalysts. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100145] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Hiroki Murakami
- Graduate School of Pharmaceutical Sciences Kyoto university 46–29 Shimoadachi-cho, Yoshida, Sakyo-ku Kyoto 606-8501 Japan
| | - Ayano Yamada
- Graduate School of Pharmaceutical Sciences Kyoto university 46–29 Shimoadachi-cho, Yoshida, Sakyo-ku Kyoto 606-8501 Japan
| | - Kenichi Michigami
- Graduate School of Pharmaceutical Sciences Kyoto university 46–29 Shimoadachi-cho, Yoshida, Sakyo-ku Kyoto 606-8501 Japan
| | - Yoshiji Takemoto
- Graduate School of Pharmaceutical Sciences Kyoto university 46–29 Shimoadachi-cho, Yoshida, Sakyo-ku Kyoto 606-8501 Japan
| |
Collapse
|
27
|
Liu N, Wu L, Feng J, Sheng X, Li J, Chen X, Li J, Liu W, Zhou J, Wu Q, Zhu D. Crystal Structures and Catalytic Mechanism of l-erythro-3,5-Diaminohexanoate Dehydrogenase and Rational Engineering for Asymmetric Synthesis of β-Amino Acids. Angew Chem Int Ed Engl 2021; 60:10203-10210. [PMID: 33624917 DOI: 10.1002/anie.202017225] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Revised: 02/02/2021] [Indexed: 12/12/2022]
Abstract
Amino acid dehydrogenases (AADHs) have shown considerable potential as biocatalysts in the asymmetric synthesis of chiral amino acids. However, compared to the widely studied α-AADHs, limited knowledge is available about β-AADHs that enable the synthesis of β-amino acids. Herein, we report the crystal structures of a l-erythro-3,5-diaminohexanoate dehydrogenase and its variants, the only known member of β-AADH family. Crystal structure analysis, site-directed mutagenesis studies and quantum chemical calculations revealed the differences in the substrate binding and catalytic mechanism from α-AADHs. A number of rationally engineered variants were then obtained with improved activity (by 110-800 times) toward various aliphatic β-amino acids without an enantioselectivity trade-off. Two β-amino acids were prepared by using the outstanding variants with excellent enantioselectivity (>99 % ee) and high isolated yields (86-87 %). These results provide important insights into the molecular mechanism of 3,5-DAHDH, and establish a solid foundation for further design of β-AADHs for the asymmetric synthesis of β-amino acids.
Collapse
Affiliation(s)
- Na Liu
- National Engineering Laboratory for Industrial Enzymes and Tianjin Engineering Research Center of Biocatalytic Technology, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, and, National Technology Innovation Center for Synthetic Biology, Tianjin, 300308, China.,University of Chinese Academy of Sciences, 19A Yuquan Road, Beijing, 100049, China
| | - Lian Wu
- University of Chinese Academy of Sciences, 19A Yuquan Road, Beijing, 100049, China.,State Key Laboratory of Bio-organic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, 200032, China.,The Key Laboratory of Synthetic Biology, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai, 200032, China
| | - Jinhui Feng
- National Engineering Laboratory for Industrial Enzymes and Tianjin Engineering Research Center of Biocatalytic Technology, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, and, National Technology Innovation Center for Synthetic Biology, Tianjin, 300308, China.,University of Chinese Academy of Sciences, 19A Yuquan Road, Beijing, 100049, China
| | - Xiang Sheng
- National Engineering Laboratory for Industrial Enzymes and Tianjin Engineering Research Center of Biocatalytic Technology, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, and, National Technology Innovation Center for Synthetic Biology, Tianjin, 300308, China
| | - Jian Li
- University of Chinese Academy of Sciences, 19A Yuquan Road, Beijing, 100049, China.,State Key Laboratory of Bio-organic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, 200032, China
| | - Xi Chen
- National Engineering Laboratory for Industrial Enzymes and Tianjin Engineering Research Center of Biocatalytic Technology, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, and, National Technology Innovation Center for Synthetic Biology, Tianjin, 300308, China
| | - Jianjiong Li
- National Engineering Laboratory for Industrial Enzymes and Tianjin Engineering Research Center of Biocatalytic Technology, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, and, National Technology Innovation Center for Synthetic Biology, Tianjin, 300308, China
| | - Weidong Liu
- National Engineering Laboratory for Industrial Enzymes and Tianjin Engineering Research Center of Biocatalytic Technology, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, and, National Technology Innovation Center for Synthetic Biology, Tianjin, 300308, China
| | - Jiahai Zhou
- CAS Key Laboratory of Quantitative Engineering Biology, Shenzhen Institute of Synthetic Biology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China.,State Key Laboratory of Bio-organic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, 200032, China
| | - Qiaqing Wu
- National Engineering Laboratory for Industrial Enzymes and Tianjin Engineering Research Center of Biocatalytic Technology, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, and, National Technology Innovation Center for Synthetic Biology, Tianjin, 300308, China.,University of Chinese Academy of Sciences, 19A Yuquan Road, Beijing, 100049, China
| | - Dunming Zhu
- National Engineering Laboratory for Industrial Enzymes and Tianjin Engineering Research Center of Biocatalytic Technology, Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, and, National Technology Innovation Center for Synthetic Biology, Tianjin, 300308, China.,University of Chinese Academy of Sciences, 19A Yuquan Road, Beijing, 100049, China
| |
Collapse
|
28
|
Liu N, Wu L, Feng J, Sheng X, Li J, Chen X, Li J, Liu W, Zhou J, Wu Q, Zhu D. Crystal Structures and Catalytic Mechanism of
l
‐
erythro
‐3,5‐Diaminohexanoate Dehydrogenase and Rational Engineering for Asymmetric Synthesis of β‐Amino Acids. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202017225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Na Liu
- National Engineering Laboratory for Industrial Enzymes and Tianjin Engineering Research Center of Biocatalytic Technology Tianjin Institute of Industrial Biotechnology Chinese Academy of Sciences, and National Technology Innovation Center for Synthetic Biology Tianjin 300308 China
- University of Chinese Academy of Sciences 19A Yuquan Road Beijing 100049 China
| | - Lian Wu
- University of Chinese Academy of Sciences 19A Yuquan Road Beijing 100049 China
- State Key Laboratory of Bio-organic and Natural Products Chemistry Center for Excellence in Molecular Synthesis Shanghai Institute of Organic Chemistry Chinese Academy of Sciences Shanghai 200032 China
- The Key Laboratory of Synthetic Biology CAS Center for Excellence in Molecular Plant Sciences Institute of Plant Physiology and Ecology Chinese Academy of Sciences Shanghai 200032 China
| | - Jinhui Feng
- National Engineering Laboratory for Industrial Enzymes and Tianjin Engineering Research Center of Biocatalytic Technology Tianjin Institute of Industrial Biotechnology Chinese Academy of Sciences, and National Technology Innovation Center for Synthetic Biology Tianjin 300308 China
- University of Chinese Academy of Sciences 19A Yuquan Road Beijing 100049 China
| | - Xiang Sheng
- National Engineering Laboratory for Industrial Enzymes and Tianjin Engineering Research Center of Biocatalytic Technology Tianjin Institute of Industrial Biotechnology Chinese Academy of Sciences, and National Technology Innovation Center for Synthetic Biology Tianjin 300308 China
| | - Jian Li
- University of Chinese Academy of Sciences 19A Yuquan Road Beijing 100049 China
- State Key Laboratory of Bio-organic and Natural Products Chemistry Center for Excellence in Molecular Synthesis Shanghai Institute of Organic Chemistry Chinese Academy of Sciences Shanghai 200032 China
| | - Xi Chen
- National Engineering Laboratory for Industrial Enzymes and Tianjin Engineering Research Center of Biocatalytic Technology Tianjin Institute of Industrial Biotechnology Chinese Academy of Sciences, and National Technology Innovation Center for Synthetic Biology Tianjin 300308 China
| | - Jianjiong Li
- National Engineering Laboratory for Industrial Enzymes and Tianjin Engineering Research Center of Biocatalytic Technology Tianjin Institute of Industrial Biotechnology Chinese Academy of Sciences, and National Technology Innovation Center for Synthetic Biology Tianjin 300308 China
| | - Weidong Liu
- National Engineering Laboratory for Industrial Enzymes and Tianjin Engineering Research Center of Biocatalytic Technology Tianjin Institute of Industrial Biotechnology Chinese Academy of Sciences, and National Technology Innovation Center for Synthetic Biology Tianjin 300308 China
| | - Jiahai Zhou
- CAS Key Laboratory of Quantitative Engineering Biology Shenzhen Institute of Synthetic Biology Shenzhen Institutes of Advanced Technology Chinese Academy of Sciences Shenzhen 518055 China
- State Key Laboratory of Bio-organic and Natural Products Chemistry Center for Excellence in Molecular Synthesis Shanghai Institute of Organic Chemistry Chinese Academy of Sciences Shanghai 200032 China
| | - Qiaqing Wu
- National Engineering Laboratory for Industrial Enzymes and Tianjin Engineering Research Center of Biocatalytic Technology Tianjin Institute of Industrial Biotechnology Chinese Academy of Sciences, and National Technology Innovation Center for Synthetic Biology Tianjin 300308 China
- University of Chinese Academy of Sciences 19A Yuquan Road Beijing 100049 China
| | - Dunming Zhu
- National Engineering Laboratory for Industrial Enzymes and Tianjin Engineering Research Center of Biocatalytic Technology Tianjin Institute of Industrial Biotechnology Chinese Academy of Sciences, and National Technology Innovation Center for Synthetic Biology Tianjin 300308 China
- University of Chinese Academy of Sciences 19A Yuquan Road Beijing 100049 China
| |
Collapse
|
29
|
Zhu C, Mandrelli F, Zhou H, Maji R, List B. Catalytic Asymmetric Synthesis of Unprotected β 2-Amino Acids. J Am Chem Soc 2021; 143:3312-3317. [PMID: 33645969 PMCID: PMC7953379 DOI: 10.1021/jacs.1c00249] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
![]()
We report here a
scalable, catalytic one-pot approach to enantiopure
and unmodified β2-amino acids. A newly developed
confined imidodiphosphorimidate (IDPi) catalyzes a broadly applicable
reaction of diverse bis-silyl ketene acetals with a silylated aminomethyl
ether, followed by hydrolytic workup, to give free β2-amino acids in high yields, purity, and enantioselectivity. Importantly,
both aromatic and aliphatic β2-amino acids can be
obtained using this method. Mechanistic studies are consistent with
the aminomethylation to proceed via silylium-based asymmetric counteranion-directed
catalysis (Si-ACDC) and a transition state to explain the enantioselectivity
is suggested on the basis of density functional theory calculation.
Collapse
Affiliation(s)
- Chendan Zhu
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470 Mülheim an der Ruhr, Germany
| | - Francesca Mandrelli
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470 Mülheim an der Ruhr, Germany
| | - Hui Zhou
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470 Mülheim an der Ruhr, Germany
| | - Rajat Maji
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470 Mülheim an der Ruhr, Germany
| | - Benjamin List
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470 Mülheim an der Ruhr, Germany
| |
Collapse
|
30
|
Kimura Y, Uraguchi D, Ooi T. Catalytic asymmetric synthesis of 5-membered alicyclic α-quaternary β-amino acids via [3 + 2]-photocycloaddition of α-substituted acrylates. Org Biomol Chem 2021; 19:1744-1747. [PMID: 33555277 DOI: 10.1039/d1ob00126d] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The photocatalytically active salt of a cationic iridium polypyridyl complex and a chiral borate is competent to promote a highly stereoselective [3 + 2]-cycloaddition of cyclopropylurea with α-substituted acrylates. This protocol provides straightforward access to a variety of stereochemically defined 5-membered alicyclic α-quaternary β-amino acids, useful building blocks of β-peptides and peptidomimetics.
Collapse
Affiliation(s)
- Yuto Kimura
- Institute of Transformative Bio-Molecules (WPI-ITbM) and Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University, Nagoya 464-8601, Japan.
| | - Daisuke Uraguchi
- Institute for Catalysis, Hokkaido University, Sapporo 001-0021, Japan
| | - Takashi Ooi
- Institute of Transformative Bio-Molecules (WPI-ITbM) and Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University, Nagoya 464-8601, Japan.
| |
Collapse
|
31
|
Zhong X, Zhong Z, Wu Z, Ye Z, Feng Y, Dong S, Liu X, Peng Q, Feng X. Chiral Lewis acid-bonded picolinaldehyde enables enantiodivergent carbonyl catalysis in the Mannich/condensation reaction of glycine ester. Chem Sci 2021; 12:4353-4360. [PMID: 34163698 PMCID: PMC8179594 DOI: 10.1039/d0sc07052a] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Accepted: 01/22/2021] [Indexed: 01/18/2023] Open
Abstract
A new strategy of asymmetric carbonyl catalysis via a chiral Lewis acid-bonded aldehyde has been developed for the direct Mannich/condensation cascade reaction of glycine ester with aromatic aldimines. The co-catalytic system of 2-picolinaldehyde and chiral YbIII-N,N'-dioxides was identified to be efficient under mild conditions, providing a series of trisubstituted imidazolidines in moderate to good yields with high diastereo- and enantioselectivities. Enantiodivergent synthesis was achieved via changing the sub-structures of the chiral ligands. The reaction could be carried out in a three-component version involving glycine ester, aldehydes, and anilines with equally good results. Based on control experiments, the X-ray crystal structure study and theoretical calculations, a possible dual-activation mechanism and stereo-control modes were provided to elucidate carbonyl catalysis and enantiodivergence.
Collapse
Affiliation(s)
- Xia Zhong
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University Chengdu 610064 P. R. China http://www.scu.edu.cn/chem_asl/
| | - Ziwei Zhong
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University Chengdu 610064 P. R. China http://www.scu.edu.cn/chem_asl/
| | - Zhikun Wu
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University Chengdu 610064 P. R. China http://www.scu.edu.cn/chem_asl/
| | - Zhen Ye
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University 94 Weijin Road Tianjin 300071 P. R. China
| | - Yuxiang Feng
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University 94 Weijin Road Tianjin 300071 P. R. China
| | - Shunxi Dong
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University Chengdu 610064 P. R. China http://www.scu.edu.cn/chem_asl/
| | - Xiaohua Liu
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University Chengdu 610064 P. R. China http://www.scu.edu.cn/chem_asl/
| | - Qian Peng
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University 94 Weijin Road Tianjin 300071 P. R. China
| | - Xiaoming Feng
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University Chengdu 610064 P. R. China http://www.scu.edu.cn/chem_asl/
| |
Collapse
|
32
|
Aguilar Troyano FJ, Merkens K, Anwar K, Gómez‐Suárez A. Radical-Based Synthesis and Modification of Amino Acids. Angew Chem Int Ed Engl 2021; 60:1098-1115. [PMID: 32841470 PMCID: PMC7820943 DOI: 10.1002/anie.202010157] [Citation(s) in RCA: 68] [Impact Index Per Article: 22.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Indexed: 12/30/2022]
Abstract
Amino acids (AAs) are key structural motifs with widespread applications in organic synthesis, biochemistry, and material sciences. Recently, with the development of milder and more versatile radical-based procedures, the use of strategies relying on radical chemistry for the synthesis and modification of AAs has gained increased attention, as they allow rapid access to libraries of novel unnatural AAs containing a wide range of structural motifs. In this Minireview, we provide a broad overview of the advancements made in this field during the last decade, focusing on methods for the de novo synthesis of α-, β-, and γ-AAs, as well as for the selective derivatisation of canonical and non-canonical α-AAs.
Collapse
Affiliation(s)
| | - Kay Merkens
- Organic ChemistryBergische Universität WuppertalGaussstrasse 2042119WuppertalGermany
| | - Khadijah Anwar
- Organic ChemistryBergische Universität WuppertalGaussstrasse 2042119WuppertalGermany
| | - Adrián Gómez‐Suárez
- Organic ChemistryBergische Universität WuppertalGaussstrasse 2042119WuppertalGermany
| |
Collapse
|
33
|
|
34
|
Zhang X, Gao Y, Hu X, Ji C, Liu Y, Yu J. Recent Advances in Catalytic Enantioselective Synthesis of Fluorinated α‐ and β‐Amino Acids. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000966] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Xue‐Xin Zhang
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development School of Chemistry and Molecular Engineering East China Normal University Shanghai 200062 People's Republic of China
| | - Yang Gao
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development School of Chemistry and Molecular Engineering East China Normal University Shanghai 200062 People's Republic of China
| | - Xiao‐Si Hu
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development School of Chemistry and Molecular Engineering East China Normal University Shanghai 200062 People's Republic of China
| | - Cong‐Bin Ji
- School of Chemistry and Environmental Sciences Shangrao Normal University Jiangxi 334001 People's Republic of China
| | - Yun‐Lin Liu
- School of Chemistry and Chemical Engineering Guangzhou University Guangzhou 510006 People's Republic of China
| | - Jin‐Sheng Yu
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development School of Chemistry and Molecular Engineering East China Normal University Shanghai 200062 People's Republic of China
- Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education Hainan Normal University Haikou 571158 People's Republic of China
| |
Collapse
|
35
|
Eder I, Haider V, Zebrowski P, Waser M. Recent Progress in the Asymmetric Syntheses of α‐Heterofunctionalized (Masked) α‐ and β‐Amino Acid Derivatives. European J Org Chem 2020. [DOI: 10.1002/ejoc.202001077] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Isabella Eder
- Institute of Organic Chemistry Johannes Kepler University Linz Altenbergerstr. 69 4040 Linz Austria
| | - Victoria Haider
- Institute of Organic Chemistry Johannes Kepler University Linz Altenbergerstr. 69 4040 Linz Austria
| | - Paul Zebrowski
- Institute of Organic Chemistry Johannes Kepler University Linz Altenbergerstr. 69 4040 Linz Austria
| | - Mario Waser
- Institute of Organic Chemistry Johannes Kepler University Linz Altenbergerstr. 69 4040 Linz Austria
| |
Collapse
|
36
|
Hou KQ, Zhou F, Chen XP, Ge Y, Chan ASC, Xiong XF. Asymmetric Synthesis of Oxindole-Derived Vicinal Tetrasubstituted Acyclic Amino Acid Derivatives by the Mannich-Type Reaction. J Org Chem 2020; 85:9661-9671. [PMID: 32603113 DOI: 10.1021/acs.joc.0c00981] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The catalytic asymmetric Mannich-type reaction of 3-hydroxy/3-aminooxindoles with 2-aminoacrylates to afford oxindole-derived acyclic amino acid derivatives bearing vicinal tetrasubstituted stereocenters is reported. (DHQ)2PHAL (4g) and quinine-derived squaramide (4d) were identified as efficient catalysts. Transformations of the Mannich-type reaction products highlight the utility of this synthetic strategy.
Collapse
Affiliation(s)
- Ke-Qiang Hou
- Guangdong Provincial Key Laboratory of Chiral Molecules and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Feng Zhou
- Guangdong Provincial Key Laboratory of Chiral Molecules and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Xue-Ping Chen
- Guangdong Provincial Key Laboratory of Chiral Molecules and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Yang Ge
- Guangdong Provincial Key Laboratory of Chiral Molecules and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Albert S C Chan
- Guangdong Provincial Key Laboratory of Chiral Molecules and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Xiao-Feng Xiong
- Guangdong Provincial Key Laboratory of Chiral Molecules and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| |
Collapse
|
37
|
Chen C, Wu WB, Li YH, Zhao QH, Yu JS, Zhou J. Activation of Chiral (Salen)TiCl2 Complex by Phosphorane for the Highly Enantioselective Cyanation of Nitroolefins. Org Lett 2020; 22:2099-2104. [DOI: 10.1021/acs.orglett.0c00612] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
| | | | | | | | | | - Jian Zhou
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Shanghai 200032, China
| |
Collapse
|
38
|
Zhang Y, Yin Z, Wu XF. Copper-Catalyzed Carbonylative Synthesis of β-Homoprolines from N-Fluoro-sulfonamides. Org Lett 2020; 22:1889-1893. [DOI: 10.1021/acs.orglett.0c00227] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Youcan Zhang
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock, Albert-Einstein-Straße 29a, 18059 Rostock, Germany
| | - Zhiping Yin
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock, Albert-Einstein-Straße 29a, 18059 Rostock, Germany
| | - Xiao-Feng Wu
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock, Albert-Einstein-Straße 29a, 18059 Rostock, Germany
| |
Collapse
|
39
|
Eitzinger A, Brière JF, Cahard D, Waser M. Enantioselective catalytic synthesis of α-aryl-α-SCF 3-β 2,2-amino acids. Org Biomol Chem 2020; 18:405-408. [PMID: 31915785 PMCID: PMC6989214 DOI: 10.1039/c9ob02666e] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
We herein report a novel entry towards chiral α-SCF3-β2,2-amino acids by carrying out the ammonium salt-catalyzed α-trifluoromethylthiolation of isoxazolidin-5-ones. This approach allowed for high enantioselectivities and high yields and the obtained heterocycles proved to be versatile platforms to access other targets of potential interest.
Collapse
Affiliation(s)
- Andreas Eitzinger
- Johannes Kepler University Linz, Institute of Organic Chemistry, Altenbergerstraße 69, 4040 Linz, Austria
| | | | - Dominique Cahard
- CNRS, UMR 6014 COBRA, Normandie Univ, UNIROUEN, INSA Rouen, 76000 Rouen, France
| | - Mario Waser
- Johannes Kepler University Linz, Institute of Organic Chemistry, Altenbergerstraße 69, 4040 Linz, Austria
| |
Collapse
|