1
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Kumar R, Maurya V, Avinash A, Appayee C. Nonsilyl Bicyclic Secondary Amine Catalysts for the Asymmetric Transfer Hydrogenation of α,β-Unsaturated Aldehydes. J Org Chem 2024; 89:8586-8600. [PMID: 38836633 DOI: 10.1021/acs.joc.4c00523] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2024]
Abstract
The first chiral synthesis of nonsilyl bicyclic secondary amine organocatalysts and their application to the asymmetric transfer hydrogenation of α,β-unsaturated aldehydes are disclosed. A lower catalytic loading (5 mol %) is demonstrated for the reduction of a wide range of α,β-unsaturated aldehydes (up to 97% yield and up to 99% ee). The application of this scalable methodology is showcased for the asymmetric synthesis of bioactive molecules such as phenoxanol, citronellol, ramelteon, and terikalant.
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Affiliation(s)
- Rohtash Kumar
- Department of Chemistry, Indian Institute of Technology Gandhinagar, Palaj, Gandhinagar, Gujarat 382055, India
| | - Vidyasagar Maurya
- Department of Chemistry, Indian Institute of Technology Gandhinagar, Palaj, Gandhinagar, Gujarat 382055, India
| | - Avinash Avinash
- Department of Chemistry, Indian Institute of Technology Gandhinagar, Palaj, Gandhinagar, Gujarat 382055, India
| | - Chandrakumar Appayee
- Department of Chemistry, Indian Institute of Technology Gandhinagar, Palaj, Gandhinagar, Gujarat 382055, India
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2
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Yu MZ, Yuan Y, Li ZJ, Kunthic T, Wang HX, Xu C, Xiang Z. An Artificial Enzyme for Asymmetric Nitrocyclopropanation of α,β-Unsaturated Aldehydes-Design and Evolution. Angew Chem Int Ed Engl 2024; 63:e202401635. [PMID: 38597773 DOI: 10.1002/anie.202401635] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2024] [Revised: 03/24/2024] [Accepted: 04/08/2024] [Indexed: 04/11/2024]
Abstract
The introduction of an abiological catalytic group into the binding pocket of a protein host allows for the expansion of enzyme chemistries. Here, we report the generation of an artificial enzyme by genetic encoding of a non-canonical amino acid that contains a secondary amine side chain. The non-canonical amino acid and the binding pocket function synergistically to catalyze the asymmetric nitrocyclopropanation of α,β-unsaturated aldehydes by the iminium activation mechanism. The designer enzyme was evolved to an optimal variant that catalyzes the reaction at high conversions with high diastereo- and enantioselectivity. This work demonstrates the application of genetic code expansion in enzyme design and expands the scope of enzyme-catalyzed abiological reactions.
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Affiliation(s)
- Ming-Zhu Yu
- State Key Laboratory of Chemical Oncogenomics, Guangdong Provincial Key Laboratory of Chemical Genomics, AI for Science (AI4S) Preferred Program, School of Chemical Biology and Biotechnology Peking University Shenzhen Graduate School, University Town of Shenzhen, Nanshan District, 518055, Shenzhen, P. R. China
| | - Ye Yuan
- State Key Laboratory of Chemical Oncogenomics, Guangdong Provincial Key Laboratory of Chemical Genomics, AI for Science (AI4S) Preferred Program, School of Chemical Biology and Biotechnology Peking University Shenzhen Graduate School, University Town of Shenzhen, Nanshan District, 518055, Shenzhen, P. R. China
| | - Zhen-Jie Li
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology Nanshan District, 518055, Shenzhen, P. R. China
| | - Thittaya Kunthic
- State Key Laboratory of Chemical Oncogenomics, Guangdong Provincial Key Laboratory of Chemical Genomics, AI for Science (AI4S) Preferred Program, School of Chemical Biology and Biotechnology Peking University Shenzhen Graduate School, University Town of Shenzhen, Nanshan District, 518055, Shenzhen, P. R. China
| | - He-Xiang Wang
- State Key Laboratory of Chemical Oncogenomics, Guangdong Provincial Key Laboratory of Chemical Genomics, AI for Science (AI4S) Preferred Program, School of Chemical Biology and Biotechnology Peking University Shenzhen Graduate School, University Town of Shenzhen, Nanshan District, 518055, Shenzhen, P. R. China
| | - Chen Xu
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology Nanshan District, 518055, Shenzhen, P. R. China
| | - Zheng Xiang
- State Key Laboratory of Chemical Oncogenomics, Guangdong Provincial Key Laboratory of Chemical Genomics, AI for Science (AI4S) Preferred Program, School of Chemical Biology and Biotechnology Peking University Shenzhen Graduate School, University Town of Shenzhen, Nanshan District, 518055, Shenzhen, P. R. China
- Institute of Chemical Biology, Shenzhen Bay Laboratory Gaoke Innovation Center, Guangqiao Road, Guangming District, 518132, Shenzhen, P. R. China
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3
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Gran-Scheuch A, Hanreich S, Keizer I, W Harteveld J, Ruijter E, Drienovská I. Designing Michaelases: exploration of novel protein scaffolds for iminium biocatalysis. Faraday Discuss 2024. [PMID: 38842386 DOI: 10.1039/d4fd00057a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2024]
Abstract
Biocatalysis is becoming a powerful and sustainable alternative for asymmetric catalysis. However, enzymes are often restricted to metabolic and less complex reactivities. This can be addressed by protein engineering, such as incorporating new-to-nature functional groups into proteins through the so-called expansion of the genetic code to produce artificial enzymes. Selecting a suitable protein scaffold is a challenging task that plays a key role in designing artificial enzymes. In this work, we explored different protein scaffolds for an abiological model of iminium-ion catalysis, Michael addition of nitromethane into E-cinnamaldehyde. We studied scaffolds looking for open hydrophobic pockets and enzymes with described binding sites for the targeted substrate. The proteins were expressed and variants harboring functional amine groups - lysine, p-aminophenylalanine, or N6-(D-prolyl)-L-lysine - were analyzed for the model reaction. Among the newly identified scaffolds, a thermophilic ene-reductase from Thermoanaerobacter pseudethanolicus was shown to be the most promising biomolecular scaffold for this reaction.
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Affiliation(s)
- Alejandro Gran-Scheuch
- Department of Chemistry and Pharmaceutical Sciences, Faculty of Science, Vrije Universiteit Amsterdam, De Boelelaan 1108, 1081 HZ, Amsterdam, The Netherlands.
| | - Stefanie Hanreich
- Department of Chemistry and Pharmaceutical Sciences, Faculty of Science, Vrije Universiteit Amsterdam, De Boelelaan 1108, 1081 HZ, Amsterdam, The Netherlands.
| | - Iris Keizer
- Department of Chemistry and Pharmaceutical Sciences, Faculty of Science, Vrije Universiteit Amsterdam, De Boelelaan 1108, 1081 HZ, Amsterdam, The Netherlands.
| | - Jaap W Harteveld
- Department of Chemistry and Pharmaceutical Sciences, Faculty of Science, Vrije Universiteit Amsterdam, De Boelelaan 1108, 1081 HZ, Amsterdam, The Netherlands.
| | - Eelco Ruijter
- Department of Chemistry and Pharmaceutical Sciences, Faculty of Science, Vrije Universiteit Amsterdam, De Boelelaan 1108, 1081 HZ, Amsterdam, The Netherlands.
| | - Ivana Drienovská
- Department of Chemistry and Pharmaceutical Sciences, Faculty of Science, Vrije Universiteit Amsterdam, De Boelelaan 1108, 1081 HZ, Amsterdam, The Netherlands.
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4
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Zhu Z, Hu Q, Fu Y, Tong Y, Zhou Z. Design and Evolution of an Enzyme for the Asymmetric Michael Addition of Cyclic Ketones to Nitroolefins by Enamine Catalysis. Angew Chem Int Ed Engl 2024:e202404312. [PMID: 38783596 DOI: 10.1002/anie.202404312] [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: 03/02/2024] [Revised: 05/01/2024] [Accepted: 05/23/2024] [Indexed: 05/25/2024]
Abstract
Consistent introduction of novel enzymes is required for developing efficient biocatalysts for challenging biotransformations. Absorbing catalytic modes from organocatalysis may be fruitful for designing new-to-nature enzymes with novel functions. Herein we report a newly designed artificial enzyme harboring a catalytic pyrrolidine residue that catalyzes the asymmetric Michael addition of cyclic ketones to nitroolefins through enamine activation with high efficiency. Diverse chiral γ-nitro cyclic ketones with two stereocenters were efficiently prepared with excellent stereoselectivity (up to 97 % e.e., >20 : 1 d.r.) and good yield (up to 86 %). This work provides an efficient biocatalytic strategy for cyclic ketone functionalization, and highlights the usefulness of artificial enzymes for extending biocatalysis to further non-natural reactions.
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Affiliation(s)
- Zhixi Zhu
- School of Life Sciences and Health Engineering, Jiangnan University, Wuxi, 214122, China
| | - Qinru Hu
- School of Life Sciences and Health Engineering, Jiangnan University, Wuxi, 214122, China
| | - Yi Fu
- School of Life Sciences and Health Engineering, Jiangnan University, Wuxi, 214122, China
| | - Yingjia Tong
- School of Life Sciences and Health Engineering, Jiangnan University, Wuxi, 214122, China
| | - Zhi Zhou
- School of Life Sciences and Health Engineering, Jiangnan University, Wuxi, 214122, China
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5
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Guo H, Sun N, Guo J, Zhou TP, Tang L, Zhang W, Deng Y, Liao RZ, Wu Y, Wu G, Zhong F. Expanding the Promiscuity of a Copper-Dependent Oxidase for Enantioselective Cross-Coupling of Indoles. Angew Chem Int Ed Engl 2023; 62:e202219034. [PMID: 36789864 DOI: 10.1002/anie.202219034] [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: 12/26/2022] [Revised: 02/14/2023] [Accepted: 02/15/2023] [Indexed: 02/16/2023]
Abstract
Herein, we disclose the highly enantioselective oxidative cross-coupling of 3-hydroxyindole esters with various nucleophilic partners as catalyzed by copper efflux oxidase. The biocatalytic transformation delivers functionalized 2,2-disubstituted indolin-3-ones with excellent optical purity (90-99 % ee), which exhibited anticancer activity against MCF-7 cell lines, as shown by preliminary biological evaluation. Mechanistic studies and molecular docking results suggest the formation of a phenoxyl radical and enantiocontrol facilitated by a suited enzyme chiral pocket. This study is significant with regard to expanding the catalytic repertoire of natural multicopper oxidases as well as enlarging the synthetic toolbox for sustainable asymmetric oxidative coupling.
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Affiliation(s)
- Huan Guo
- Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Luoyu Road 1037, Wuhan, 430074, China
| | - Ningning Sun
- Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Luoyu Road 1037, Wuhan, 430074, China
| | - Juan Guo
- Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Luoyu Road 1037, Wuhan, 430074, China
| | - Tai-Ping Zhou
- Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Luoyu Road 1037, Wuhan, 430074, China
| | - Langyu Tang
- Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Luoyu Road 1037, Wuhan, 430074, China
| | - Wentao Zhang
- Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Luoyu Road 1037, Wuhan, 430074, China
| | - Yaming Deng
- Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Luoyu Road 1037, Wuhan, 430074, China
| | - Rong-Zhen Liao
- Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Luoyu Road 1037, Wuhan, 430074, China
| | - Yuzhou Wu
- Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Luoyu Road 1037, Wuhan, 430074, China
| | - Guojiao Wu
- Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Luoyu Road 1037, Wuhan, 430074, China
| | - Fangrui Zhong
- Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Luoyu Road 1037, Wuhan, 430074, China
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6
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Breukelaar W, Polidori N, Singh A, Daniel B, Glueck SM, Gruber K, Kroutil W. Mechanistic Insights into the Ene-Reductase-Catalyzed Promiscuous Reduction of Oximes to Amines. ACS Catal 2023; 13:2610-2618. [PMID: 36846821 PMCID: PMC9942197 DOI: 10.1021/acscatal.2c06137] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Revised: 01/18/2023] [Indexed: 02/08/2023]
Abstract
The biocatalytic reduction of the oxime moiety to the corresponding amine group has only recently been found to be a promiscuous activity of ene-reductases transforming α-oximo β-keto esters. However, the reaction pathway of this two-step reduction remained elusive. By studying the crystal structures of enzyme oxime complexes, analyzing molecular dynamics simulations, and investigating biocatalytic cascades and possible intermediates, we obtained evidence that the reaction proceeds via an imine intermediate and not via the hydroxylamine intermediate. The imine is reduced further by the ene-reductase to the amine product. Remarkably, a non-canonical tyrosine residue was found to contribute to the catalytic activity of the ene-reductase OPR3, protonating the hydroxyl group of the oxime in the first reduction step.
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Affiliation(s)
- Willem
B. Breukelaar
- Department
of Chemistry, NAWI Graz, University of Graz, Heinrichstraße 28, 8010 Graz, Austria
| | - Nakia Polidori
- Institute
of Molecular Biosciences, University of
Graz, Humboldtstraße 50, 8010 Graz, Austria
| | - Amit Singh
- Institute
of Molecular Biosciences, University of
Graz, Humboldtstraße 50, 8010 Graz, Austria
| | - Bastian Daniel
- Institute
of Molecular Biosciences, University of
Graz, Humboldtstraße 50, 8010 Graz, Austria
| | - Silvia M. Glueck
- Department
of Chemistry, NAWI Graz, University of Graz, Heinrichstraße 28, 8010 Graz, Austria
| | - Karl Gruber
- Institute
of Molecular Biosciences, University of
Graz, Humboldtstraße 50, 8010 Graz, Austria,Field
of Excellence BioHealth, University of Graz, 8010 Graz, Austria,BioTechMed
Graz, 8010 Graz, Austria,
| | - Wolfgang Kroutil
- Department
of Chemistry, NAWI Graz, University of Graz, Heinrichstraße 28, 8010 Graz, Austria,Field
of Excellence BioHealth, University of Graz, 8010 Graz, Austria,BioTechMed
Graz, 8010 Graz, Austria,
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7
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Fu H, Qiao T, Carceller JM, MacMillan SN, Hyster TK. Asymmetric C-Alkylation of Nitroalkanes via Enzymatic Photoredox Catalysis. J Am Chem Soc 2023; 145:787-793. [PMID: 36608280 DOI: 10.1021/jacs.2c12197] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Tertiary nitroalkanes and the corresponding α-tertiary amines represent important motifs in bioactive molecules and natural products. The C-alkylation of secondary nitroalkanes with electrophiles is a straightforward strategy for constructing tertiary nitroalkanes; however, controlling the stereoselectivity of this type of reaction remains challenging. Here, we report a highly chemo- and stereoselective C-alkylation of nitroalkanes with alkyl halides catalyzed by an engineered flavin-dependent "ene"-reductase (ERED). Directed evolution of the old yellow enzyme from Geobacillus kaustophilus provided a triple mutant, GkOYE-G7, capable of synthesizing tertiary nitroalkanes in high yield and enantioselectivity. Mechanistic studies indicate that the excitation of an enzyme-templated charge-transfer complex formed between the substrates and cofactor is responsible for radical initiation. Moreover, a single-enzyme two-mechanism cascade reaction was developed to prepare tertiary nitroalkanes from simple nitroalkenes, highlighting the potential to use one enzyme for two mechanistically distinct reactions.
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Affiliation(s)
- Haigen Fu
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14850, United States
| | - Tianzhang Qiao
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14850, United States
| | - Jose M Carceller
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14850, United States.,Institute of Chemical Technology (ITQ), Universitat Politècnica de València, València 46022, Spain
| | - Samantha N MacMillan
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14850, United States
| | - Todd K Hyster
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14850, United States
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8
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Zhang N, Wu C. Tailoring Protein-Polymer Conjugates as Efficient Artificial Enzymes for Aqueous Asymmetric Aldol Reactions. ACS Synth Biol 2022; 11:3797-3804. [PMID: 36343337 DOI: 10.1021/acssynbio.2c00387] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Artificial enzymes are becoming a powerful toolbox for selective organic syntheses. Herein, we first propose an advanced artificial enzyme by polymeric modularity as an efficient aldolase mimic for aqueous asymmetric aldol reactions. Based on an in-depth understanding of the aldolase reaction mechanism and our previous work, we demonstrate the modular design of protein-polymer conjugates by co-incorporating l-proline and styrene onto a noncatalytic protein scaffold with a high degree of controllability. The tailored conjugates exhibited remarkable catalytic performance toward the aqueous asymmetric aldol reaction of p-nitrobenzaldehyde and cyclohexanone, achieving 94% conversion and excellent selectivity (95/5 diastereoselectivity, 98% enantiomeric excess). In addition, this artificial enzyme showed high tolerance against extreme conditions (e.g., wide pH range, high temperature) and could be reused for more than four times without significant loss of reactivity. Experiments have shown that the artificial enzyme displayed broad specificity for various aldehydes.
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Affiliation(s)
- Ningning Zhang
- Institute of Microbiology, Technische Universität Dresden, Zellescher Weg 20b, 01217 Dresden, Germany
| | - Changzhu Wu
- Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, Campusvej 55, 5230 Odense, Denmark.,Danish Institute for Advanced Study (DIAS), University of Southern Denmark, Campusvej 55, 5230 Odense, Denmark
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9
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Sigmund M, Xu G, Grandi E, Poelarends GJ. Enhancing the Peroxygenase Activity of a Cofactor-Independent Peroxyzyme by Directed Evolution Enabling Gram-Scale Epoxide Synthesis. Chemistry 2022; 28:e202201651. [PMID: 35861144 PMCID: PMC9804992 DOI: 10.1002/chem.202201651] [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: 05/28/2022] [Indexed: 01/09/2023]
Abstract
Peroxygenases selectively incorporate oxygen into organic molecules making use of the environmentally friendly oxidant H2 O2 with water being the sole by-product. These biocatalysts can provide 'green' routes for the synthesis of enantioenriched epoxides, which are fundamental intermediates in the production of pharmaceuticals. The peroxyzyme 4-oxalocrotonate tautomerase (4-OT), catalysing the epoxidation of a variety of α,β-unsaturated aldehydes with H2 O2 , is outstanding because of its independence from any cost-intensive cofactor. However, its low-level peroxygenase activity and the decrease in the enantiomeric excess of the corresponding α,β-epoxy-aldehydes under preparative-scale conditions is limiting the potential of 4-OT. Herein we report the directed evolution of a tandem-fused 4-OT variant, which showed an ∼150-fold enhanced peroxygenase activity compared to 4-OT wild type, enabling the synthesis of α,β-epoxy-aldehydes in milligram- and gram-scale with high enantiopurity (up to 98 % ee) and excellent conversions. This engineered cofactor-independent peroxyzyme can provide new opportunities for the eco-friendly and practical synthesis of enantioenriched epoxides at large scale.
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Affiliation(s)
- Marie‐Cathérine Sigmund
- Department of Chemical and Pharmaceutical BiologyUniversity of GroningenAntonius Deusignlaan 19713 AVGroningenThe Netherlands
| | - Guangcai Xu
- Department of Chemical and Pharmaceutical BiologyUniversity of GroningenAntonius Deusignlaan 19713 AVGroningenThe Netherlands
| | - Eleonora Grandi
- Department of Chemical and Pharmaceutical BiologyUniversity of GroningenAntonius Deusignlaan 19713 AVGroningenThe Netherlands
| | - Gerrit J. Poelarends
- Department of Chemical and Pharmaceutical BiologyUniversity of GroningenAntonius Deusignlaan 19713 AVGroningenThe Netherlands
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10
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Tseliou V, Faraone A, Kqiku L, Vilím J, Simionato G, Melchiorre P. Enantioselective Biocascade Catalysis with a Single Multifunctional Enzyme. Angew Chem Int Ed Engl 2022; 61:e202212176. [DOI: 10.1002/anie.202212176] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Indexed: 12/12/2022]
Affiliation(s)
- Vasilis Tseliou
- ICIQ, Institute of Chemical Research of Catalonia The Barcelona Institute of Science and Technology Avenida Països Catalans 16 43007 Tarragona Spain
| | - Adriana Faraone
- University Rovira i Virgili 43007 Tarragona Spain
- ICIQ, Institute of Chemical Research of Catalonia The Barcelona Institute of Science and Technology Avenida Països Catalans 16 43007 Tarragona Spain
| | - Laura Kqiku
- University Rovira i Virgili 43007 Tarragona Spain
- ICIQ, Institute of Chemical Research of Catalonia The Barcelona Institute of Science and Technology Avenida Països Catalans 16 43007 Tarragona Spain
| | - Jan Vilím
- ICIQ, Institute of Chemical Research of Catalonia The Barcelona Institute of Science and Technology Avenida Països Catalans 16 43007 Tarragona Spain
| | - Gianluca Simionato
- ICIQ, Institute of Chemical Research of Catalonia The Barcelona Institute of Science and Technology Avenida Països Catalans 16 43007 Tarragona Spain
| | - Paolo Melchiorre
- ICREA Passeig Lluís Companys 23 08010 Barcelona Spain
- ICIQ, Institute of Chemical Research of Catalonia The Barcelona Institute of Science and Technology Avenida Països Catalans 16 43007 Tarragona Spain
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11
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Tseliou V, Faraone A, Kqiku L, Vilím J, Simionato G, Melchiorre P. Enantioselective Biocascade Catalysis with a Single Multifunctional Enzyme. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202212176] [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)
- Vasilis Tseliou
- ICIQ: Institut Catala d'Investigacio Quimica Melchiorre group 43007 Tarragona SPAIN
| | - Adriana Faraone
- ICIQ: Institut Catala d'Investigacio Quimica Melchiorre group SPAIN
| | - Laura Kqiku
- ICIQ: Institut Catala d'Investigacio Quimica Melchiorre group SPAIN
| | - Jan Vilím
- ICIQ: Institut Catala d'Investigacio Quimica Melchiorre group SPAIN
| | | | - Paolo Melchiorre
- Institute of Chemical Research of Catalonia (ICIQ) ICIQ Av. Països Catalans 16 43007 Tarragona SPAIN
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12
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Costa AM, Castro-Alvarez A, Vilarrasa J, Fillot D. Computational Comparison of the Stability of Iminium Ions and Salts from Enals and Pyrrolidine Derivatives (Aminocatalysts). European J Org Chem 2022. [DOI: 10.1002/ejoc.202200627] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Anna M. Costa
- Universitat de Barcelona Facultat de Química: Universitat de Barcelona Facultat de Quimica Organic Chemistry Section Av. Diagonal 645 08028 Barcelona SPAIN
| | - Alejandro Castro-Alvarez
- Universidad de la Frontera Facultad de Medicina Ciencias Preclínicas Av. Alemania 0458 4810296 Temuco CHILE
| | - Jaume Vilarrasa
- Universitat de Barcelona Organic Chemistry Section, Fac. Quimica Av. Diagonal 645 08028 Barcelona SPAIN
| | - Daniel Fillot
- Universidad de Barcelona Facultad de Química: Universitat de Barcelona Facultat de Quimica Organic Chemistry Section (Dep. Quim. Inorg. i Org.) Diagonal 645 08028 Barcelona SPAIN
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13
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Benitéz‐Buelga C, Helleday T, Michel M. Synthetic switches of OGG1 control initiation of base excision repair and offer new treatment strategies. Clin Transl Med 2022; 12:e1035. [PMID: 36037066 PMCID: PMC9423131 DOI: 10.1002/ctm2.1035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Accepted: 08/15/2022] [Indexed: 11/08/2022] Open
Affiliation(s)
| | - Thomas Helleday
- Sheffield Cancer Centre, Department of Oncology and MetabolismUniversity of SheffieldSheffieldUK
- Science for Life Laboratory, Department of Oncology‐PathologyKarolinska InstituteStockholmSweden
| | - Maurice Michel
- Science for Life Laboratory, Department of Oncology‐PathologyKarolinska InstituteStockholmSweden
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14
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Eggbauer B, Schrittwieser JH, Kerschbaumer B, Macheroux P, Kroutil W. Regioselective Biocatalytic C4-Prenylation of Unprotected Tryptophan Derivatives. Chembiochem 2022; 23:e202200311. [PMID: 35770709 PMCID: PMC9540666 DOI: 10.1002/cbic.202200311] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Revised: 06/23/2022] [Indexed: 11/25/2022]
Abstract
Regioselective carbon−carbon bond formation belongs to the challenging tasks in organic synthesis. In this context, C−C bond formation catalyzed by 4‐dimethylallyltryptophan synthases (4‐DMATSs) represents a possible tool to regioselectively synthesize C4‐prenylated indole derivatives without site‐specific preactivation and circumventing the need of protection groups as used in chemical synthetic approaches. In this study, a toolbox of 4‐DMATSs to produce a set of 4‐dimethylallyl tryptophan and indole derivatives was identified. Using three wild‐type enzymes as well as variants, various C5‐substituted tryptophan derivatives as well as N‐methyl tryptophan were successfully prenylated with conversions up to 90 %. Even truncated tryptophan derivatives like tryptamine and 3‐indole propanoic acid were regioselectively prenylated in position C4. The acceptance of C5‐substituted tryptophan derivatives was improved up to 5‐fold by generating variants (e. g. T108S). The feasibility of semi‐preparative prenylation of selected tryptophan derivatives was successfully demonstrated on 100 mg scale at 15 mM substrate concentration, allowing to reduce the previously published multistep chemical synthetic sequence to just a single step.
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Affiliation(s)
- Bettina Eggbauer
- University of Graz: Karl-Franzens-Universitat Graz, Chemistry, AUSTRIA
| | | | | | | | - Wolfgang Kroutil
- University of Graz: Karl-Franzens-Universitat Graz, Institute of Chemistry, Heinrichstrasse 28, 8010, Graz, AUSTRIA
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