1
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Pecchini P, Fochi M, Bartoccini F, Piersanti G, Bernardi L. Enantioselective organocatalytic strategies to access noncanonical α-amino acids. Chem Sci 2024; 15:5832-5868. [PMID: 38665517 PMCID: PMC11041364 DOI: 10.1039/d4sc01081g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2024] [Accepted: 03/23/2024] [Indexed: 04/28/2024] Open
Abstract
Organocatalytic asymmetric synthesis has evolved over the years and continues to attract the interest of many researchers worldwide. Enantiopure noncanonical amino acids (ncAAs) are valuable building blocks in organic synthesis, medicinal chemistry, and chemical biology. They are employed in the elaboration of peptides and proteins with enhanced activities and/or improved properties compared to their natural counterparts, as chiral catalysts, in chiral ligand design, and as chiral building blocks for asymmetric syntheses of complex molecules, including natural products. The linkage of ncAA synthesis and enantioselective organocatalysis, the subject of this perspective, tries to imitate the natural biosynthetic process. Herein, we present contemporary and earlier developments in the field of organocatalytic activation of simple feedstock materials, providing potential ncAAs with diverse side chains, unique three-dimensional structures, and a high degree of functionality. These asymmetric organocatalytic strategies, useful for forging a wide range of C-C, C-H, and C-N bonds and/or combinations thereof, vary from classical name reactions, such as Ugi, Strecker, and Mannich reactions, to the most advanced concepts such as deracemisation, transamination, and carbene N-H insertion. Concurrently, we present some interesting mechanistic studies/models, providing information on the chirality transfer process. Finally, this perspective highlights, through the diversity of the amino acids (AAs) not selected by nature for protein incorporation, the most generic modes of activation, induction, and reactivity commonly used, such as chiral enamine, hydrogen bonding, Brønsted acids/bases, and phase-transfer organocatalysis, reflecting their increasingly important role in organic and applied chemistry.
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Affiliation(s)
- Pietro Pecchini
- Department of Industrial Chemistry "Toso Montanari", Center for Chemical Catalysis C3 & INSTM RU Bologna V. Gobetti 85 40129 Bologna Italy
| | - Mariafrancesca Fochi
- Department of Industrial Chemistry "Toso Montanari", Center for Chemical Catalysis C3 & INSTM RU Bologna V. Gobetti 85 40129 Bologna Italy
| | - Francesca Bartoccini
- Department of Biomolecular Sciences, University of Urbino Carlo Bo Piazza Rinascimento 6 61029 Urbino PU Italy
| | - Giovanni Piersanti
- Department of Biomolecular Sciences, University of Urbino Carlo Bo Piazza Rinascimento 6 61029 Urbino PU Italy
| | - Luca Bernardi
- Department of Industrial Chemistry "Toso Montanari", Center for Chemical Catalysis C3 & INSTM RU Bologna V. Gobetti 85 40129 Bologna Italy
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2
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Frost J, Korb SM, Green FE, Youngblood KC, Petersen KS. Chiral Brønsted Acid Catalyzed Cascade Alcohol Deprotection and Enantioselective Cyclization. ACS OMEGA 2024; 9:2962-2969. [PMID: 38250380 PMCID: PMC10795110 DOI: 10.1021/acsomega.3c08869] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Revised: 12/02/2023] [Accepted: 12/07/2023] [Indexed: 01/23/2024]
Abstract
The protection-deprotection sequence is vital to organic synthesis. Here, we describe a novel catalytic cascade where a chiral Brønsted acid selectively removes ether protecting groups and catalyzes intramolecular cyclization in one pot. We tested three model substrates from our previous work and investigated the rate of deprotection through gas chromatography (GC) studies. This work builds on our stereoselective synthesis of lactones by streamlining our synthesis. It also opens the door for additional investigations into other catalytic cascade reactions using chiral Brønsted acid catalysts.
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Affiliation(s)
- Joshua
A. Frost
- Department of Chemistry and
Biochemistry, University of North Carolina
at Greensboro, 320 College Avenue, Greensboro, North Carolina 27412, United States
| | - Sarah M. Korb
- Department of Chemistry and
Biochemistry, University of North Carolina
at Greensboro, 320 College Avenue, Greensboro, North Carolina 27412, United States
| | - Fiona E. Green
- Department of Chemistry and
Biochemistry, University of North Carolina
at Greensboro, 320 College Avenue, Greensboro, North Carolina 27412, United States
| | - Kala C. Youngblood
- Department of Chemistry and
Biochemistry, University of North Carolina
at Greensboro, 320 College Avenue, Greensboro, North Carolina 27412, United States
| | - Kimberly S. Petersen
- Department of Chemistry and
Biochemistry, University of North Carolina
at Greensboro, 320 College Avenue, Greensboro, North Carolina 27412, United States
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3
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Shan C, Li R, Wang X. Efficient construction of a β-naphthol library under continuous flow conditions. RSC Adv 2024; 14:2673-2677. [PMID: 38226147 PMCID: PMC10789443 DOI: 10.1039/d3ra08660g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Accepted: 01/04/2024] [Indexed: 01/17/2024] Open
Abstract
A β-naphthol library has been efficiently constructed utilizing a mild continuous flow procedure, relying on a tandem Friedel-Crafts reaction and starting from readily available arylacetyl chloride and alkynes. Multiple functionalized β-naphthols can be acquired within 160 s in generally high yields (up to 83%). Using an electron-rich phenylacetyl chloride derivative (4-OH- or 4-MeO-) provides spirofused triene dione as the primary product. A scale-up preparation affords a throughput of 4.70 g h-1, indicating potential large-scale application. Herein, we present a rapid, reliable, and scalable method to obtain various β-naphthols in the compound library.
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Affiliation(s)
- Chao Shan
- Heze University Heze Shandong Province 274015 China
| | - Ranran Li
- Heze University Heze Shandong Province 274015 China
| | - Xinchao Wang
- Heze University Heze Shandong Province 274015 China
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4
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OuYang M, Yuan M, Li J, Yang W. Brønsted Acid-Catalyzed Tandem Double Friedel-Crafts Alkylation to Construct a Dihydrophenalene Skeleton Bearing an All-Carbon Quaternary Center. J Org Chem 2024; 89:576-588. [PMID: 38145504 DOI: 10.1021/acs.joc.3c02310] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2023]
Abstract
An efficient Brønsted acid-catalyzed tandem reaction has been developed for the construction of a dihydrophenalene skeleton bearing an all-carbon quaternary center. Starting with 2-naphthol-tethered ketones and indoles, the tandem reaction catalyzed by TsOH monohydrate proceeded smoothly with good to excellent efficiency through a double Friedel-Crafts alkylation process. Moreover, the synthetic utility of this method was demonstrated by easy gram-scale preparation and product transformations to fused hexacyclic compounds.
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Affiliation(s)
- Mingjing OuYang
- Advanced Catalytic Engineering Research Center of the Ministry of Education, College of Chemistry and Chemical Engineering, Hunan University, Changsha, Hunan 410082, P. R. China
| | - Min Yuan
- Advanced Catalytic Engineering Research Center of the Ministry of Education, College of Chemistry and Chemical Engineering, Hunan University, Changsha, Hunan 410082, P. R. China
| | - Jinwei Li
- Advanced Catalytic Engineering Research Center of the Ministry of Education, College of Chemistry and Chemical Engineering, Hunan University, Changsha, Hunan 410082, P. R. China
| | - Wen Yang
- Advanced Catalytic Engineering Research Center of the Ministry of Education, College of Chemistry and Chemical Engineering, Hunan University, Changsha, Hunan 410082, P. R. China
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5
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Biswas A. Aromatic C-H bond functionalization through organocatalyzed asymmetric intermolecular aza-Friedel-Crafts reaction: a recent update. Beilstein J Org Chem 2023; 19:956-981. [PMID: 37404800 PMCID: PMC10315893 DOI: 10.3762/bjoc.19.72] [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: 04/09/2023] [Accepted: 06/15/2023] [Indexed: 07/06/2023] Open
Abstract
The aza-Friedel-Crafts reaction allows an efficient coupling of electron-rich aromatic systems with imines for the facile incorporation of aminoalkyl groups into the aromatic ring. This reaction has a great scope of forming aza-stereocenters which can be tuned by different asymmetric catalysts. This review assembles recent advances in asymmetric aza-Friedel-Crafts reactions mediated by organocatalysts. The mechanistic interpretation with the origin of stereoselectivity is also explained.
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Affiliation(s)
- Anup Biswas
- Department of Chemistry, Hooghly Women’s College, Vivekananda Road, Pipulpati, Hooghly - 712103, WB, India
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6
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Retini M, Bartolucci S, Bartoccini F, Piersanti G. Asymmetric Alkylation of Cyclic Ketones with Dehydroalanine via H-Bond-Directing Enamine Catalysis: Straightforward Access to Enantiopure Unnatural α-Amino Acids. Chemistry 2022; 28:e202201994. [PMID: 35916657 PMCID: PMC9805190 DOI: 10.1002/chem.202201994] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Indexed: 01/09/2023]
Abstract
The growing importance of structurally diverse and functionalized enantiomerically pure unnatural amino acids in the design of drugs, including peptides, has stimulated the development of new synthetic methods. This study reports the challenging direct asymmetric alkylation of cyclic ketones with dehydroalanine derivatives via a conjugate addition reaction for the synthesis of enantiopure ketone-based α-unnatural amino acids. The key to success was the design of a bifunctional primary amine-thiourea catalyst that combines H-bond-directing activation and enamine catalysis. The simultaneous dual activation of the two relatively unreactive partners, confirmed by mass spectrometry studies, results in high reactivity while securing high levels of stereocontrol. A broad substrate scope is accompanied by versatile downstream chemical modifications. The mild reaction conditions and consistently excellent enantioselectivities (>95 % ee in most cases) render this protocol highly practical for the rapid construction of valuable noncanonical enantiopure α-amino-acid building blocks.
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Affiliation(s)
- Michele Retini
- Department of Biomolecular SciencesUniversity of Urbino Carlo BoPiazza Rinascimento 661029UrbinoPUItaly
| | - Silvia Bartolucci
- Department of Biomolecular SciencesUniversity of Urbino Carlo BoPiazza Rinascimento 661029UrbinoPUItaly
| | - Francesca Bartoccini
- Department of Biomolecular SciencesUniversity of Urbino Carlo BoPiazza Rinascimento 661029UrbinoPUItaly
| | - Giovanni Piersanti
- Department of Biomolecular SciencesUniversity of Urbino Carlo BoPiazza Rinascimento 661029UrbinoPUItaly
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7
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Ellefsen JD, Miller SJ. Photocatalytic Reductive Olefin Hydrodifluoroalkylation Enabled by Tertiary Amine Reductants Compatible with Complex Systems. J Org Chem 2022; 87:10250-10255. [PMID: 35829693 PMCID: PMC9357216 DOI: 10.1021/acs.joc.2c01231] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Noncanonical amino acids (NCAAs) are imperative to many facets of chemistry and biology. Herein, we report a method for the reductive hydrodifluoroalkylation of olefins that utilizes triethylamine base as the terminal reductant. The alkene acceptors include a range of electronically diverse alkenes, chief among them, dehydroalanine in variously protected forms, which provides access to synthetically relevant NCAA scaffolds under mild and general reaction conditions. We have demonstrated that a chiral auxiliary may be incorporated to provide diastereocontrol for pro-stereogenic substrates. Mechanistically motivated experiments provide some insight into the reaction mechanism, which supports a terminal step involving proton transfer for electron-poor olefins, while H atom transfer assisted by a thiol cocatalyst may complete the catalytic cycle for electron-rich olefins. The protocol is found to be compatible with additions to complex molecules, including the natural product thiostrepton.
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Affiliation(s)
- Jonathan D Ellefsen
- Department of Chemistry, Yale University, P.O. Box 208107, New Haven, Connecticut 06520-8107, United States
| | - Scott J Miller
- Department of Chemistry, Yale University, P.O. Box 208107, New Haven, Connecticut 06520-8107, United States
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8
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Caballero-García G, Goodman JM. N-Triflylphosphoramides: highly acidic catalysts for asymmetric transformations. Org Biomol Chem 2021; 19:9565-9618. [PMID: 34723293 DOI: 10.1039/d1ob01708j] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
N-Triflylphosphoramides (NTPA), have become increasingly popular catalysts in the development of enantioselective transformations as they are stronger Brønsted acids than the corresponding phosphoric acids (PA). Their highly acidic, asymmetric active site can activate difficult, unreactive substrates. In this review, we present an account of asymmetric transformations using this type of catalyst that have been reported in the past ten years and we classify these reactions using the enantio-determining step as the key criterion. This compendium of NTPA-catalysed reactions is organised into the following categories: (1) cycloadditions, (2) electrocyclisations, polyene and related cyclisations, (3) addition reactions to imines, (4) electrophilic aromatic substitutions, (5) addition reactions to carbocations, (6) aldol and related reactions, (7) addition reactions to double bonds, and (8) rearrangements and desymmetrisations. We highlight the use of NTPA in total synthesis and suggest mnemonics which account for their enantioselectivity.
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Affiliation(s)
| | - Jonathan M Goodman
- Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Road, CB2 1EW, Cambridge, UK.
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9
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Bartoccini F, Mari M, Retini M, Galarini R, Bartolucci S, Piersanti G. Single‐Step Synthesis of Dehydroalanine Derivatives via a Brønsted Acid‐Catalyzed Multicomponent Reaction. ChemistrySelect 2020. [DOI: 10.1002/slct.202000898] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Francesca Bartoccini
- Department of Biomolecular SciencesUniversity of Urbino Carlo Bo Piazza Rinascimento 6 61029 Urbino, PU Italy
| | - Michele Mari
- Department of Biomolecular SciencesUniversity of Urbino Carlo Bo Piazza Rinascimento 6 61029 Urbino, PU Italy
| | - Michele Retini
- Department of Biomolecular SciencesUniversity of Urbino Carlo Bo Piazza Rinascimento 6 61029 Urbino, PU Italy
| | - Roberta Galarini
- Centro Sviluppo e Validazione MetodiIstituto Zooprofilattico Sperimentale dell'Umbria e delle Marche “Togo Rosati” Via G. Salvemini 1 06126 Perugia, PG Italy
| | - Silvia Bartolucci
- Department of Biomolecular SciencesUniversity of Urbino Carlo Bo Piazza Rinascimento 6 61029 Urbino, PU Italy
| | - Giovanni Piersanti
- Department of Biomolecular SciencesUniversity of Urbino Carlo Bo Piazza Rinascimento 6 61029 Urbino, PU Italy
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10
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Gui H, Jangra H, Mao B, Wang T, Yi H, Xu Q, Wei Y, Zipse H, Shi M. Construction of α,α‐disubstituted α‐Amino Acid Derivatives
via
aza‐Morita‐Baylis‐Hillman Reactions of 2‐Aminoacrylates with Activated Olefins. ChemCatChem 2020. [DOI: 10.1002/cctc.201901987] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Hou‐Ze Gui
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals School of Chemistry & Molecular EngineeringEast China University of Science and Technology Meilong Road No. 130 200237 Shanghai China
| | - Harish Jangra
- Department of ChemistryLMU München Butenandtstrasse 5–13 81377 München Germany
| | - Ben Mao
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals School of Chemistry & Molecular EngineeringEast China University of Science and Technology Meilong Road No. 130 200237 Shanghai China
| | - Tian‐Yu Wang
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals School of Chemistry & Molecular EngineeringEast China University of Science and Technology Meilong Road No. 130 200237 Shanghai China
| | - Heng Yi
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals School of Chemistry & Molecular EngineeringEast China University of Science and Technology Meilong Road No. 130 200237 Shanghai China
| | - Qin Xu
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals School of Chemistry & Molecular EngineeringEast China University of Science and Technology Meilong Road No. 130 200237 Shanghai China
| | - Yin Wei
- State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic ChemistryChinese Academy of Sciences 345 Linglin Lu Shanghai 200032 China
| | - Hendrik Zipse
- Department of ChemistryLMU München Butenandtstrasse 5–13 81377 München Germany
| | - Min Shi
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals School of Chemistry & Molecular EngineeringEast China University of Science and Technology Meilong Road No. 130 200237 Shanghai China
- State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic ChemistryChinese Academy of Sciences 345 Linglin Lu Shanghai 200032 China
- Shenzhen Grubbs InstituteSouthern University of Science and Technology Shenzhen 518000 Guangdong China
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11
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Chang MY, Chen KT, Hsiao YT, Chen SM. Ac2O-Mediated Dearylacetylative Dimerization of 2-Arylacetyl-1-naphthols: Synthesis of Naphtho[1,2-b]furan-3-ones. J Org Chem 2020; 85:3605-3616. [DOI: 10.1021/acs.joc.9b03298] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Meng-Yang Chang
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 807, Taiwan
- Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung 807, Taiwan
| | - Kuan-Ting Chen
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Yu-Ting Hsiao
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Shin-Mei Chen
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 807, Taiwan
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12
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Cai L, Liu X, Wang J, Chen L, Li X, Cheng JP. Enantioselective and regioselective aza-Friedel–Crafts reaction of electron-rich phenols with isatin-derived ketimines. Chem Commun (Camb) 2020; 56:10361-10364. [DOI: 10.1039/d0cc04966b] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
An efficient asymmetric aza-Friedel–Crafts reaction of phenols with isatin-derived ketimines is described.
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Affiliation(s)
- Liu Cai
- State Key Laboratory of Elemento-Organic Chemistry
- College of Chemistry
- Nankai University
- Tianjin 300071
- P. R. China
| | - Xiangshuai Liu
- State Key Laboratory of Elemento-Organic Chemistry
- College of Chemistry
- Nankai University
- Tianjin 300071
- P. R. China
| | - Jie Wang
- State Key Laboratory of Elemento-Organic Chemistry
- College of Chemistry
- Nankai University
- Tianjin 300071
- P. R. China
| | - Li Chen
- State Key Laboratory of Elemento-Organic Chemistry
- College of Chemistry
- Nankai University
- Tianjin 300071
- P. R. China
| | - Xin Li
- State Key Laboratory of Elemento-Organic Chemistry
- College of Chemistry
- Nankai University
- Tianjin 300071
- P. R. China
| | - Jin-Pei Cheng
- State Key Laboratory of Elemento-Organic Chemistry
- College of Chemistry
- Nankai University
- Tianjin 300071
- P. R. China
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13
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Retini M, Bartolucci S, Bartoccini F, Mari M, Piersanti G. Concise and Convergent Enantioselective Total Syntheses of (+)- and (-)-Fumimycin. J Org Chem 2019; 84:12221-12227. [PMID: 31476858 DOI: 10.1021/acs.joc.9b02020] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The concise and convergent total syntheses of (+)- and (-)-Fumimycin have been achieved by taking advantage of strategies for the asymmetric aza-Friedel-Crafts reaction of a highly substituted hydroquinone and N-fumaryl ketimine generated from the corresponding dehydroalanine. The enantiomerically pure natural product and its enantiomer were prepared in seven steps and 22% overall yield by employing both enantiomers of a BINOL-derived chiral phosphoric acid (CPA) catalyst.
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Affiliation(s)
- Michele Retini
- Department of Biomolecular Sciences , University of Urbino "Carlo Bo" , P.zza Rinascimento 6 , 61029 Urbino , PU , Italy
| | - Silvia Bartolucci
- Department of Biomolecular Sciences , University of Urbino "Carlo Bo" , P.zza Rinascimento 6 , 61029 Urbino , PU , Italy
| | - Francesca Bartoccini
- Department of Biomolecular Sciences , University of Urbino "Carlo Bo" , P.zza Rinascimento 6 , 61029 Urbino , PU , Italy
| | - Michele Mari
- Department of Biomolecular Sciences , University of Urbino "Carlo Bo" , P.zza Rinascimento 6 , 61029 Urbino , PU , Italy
| | - Giovanni Piersanti
- Department of Biomolecular Sciences , University of Urbino "Carlo Bo" , P.zza Rinascimento 6 , 61029 Urbino , PU , Italy
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14
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Zaghouani M, Bögeholz LAK, Mercier E, Wintermeyer W, Roche SP. Total synthesis of (±)-fumimycin and analogues for biological evaluation as peptide deformylase inhibitors. Tetrahedron 2019; 75:3216-3230. [PMID: 31555018 PMCID: PMC6759494 DOI: 10.1016/j.tet.2019.03.037] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A concise 7-step total synthesis of (±)-fumimycin in 11.6 % overall yield is reported. An acid-catalyzed intramolecular aza-Friedel-Crafts cyclization was developed to construct the benzofuranone skeleton of the natural product bearing an α,α-disubstituted amino acid moiety in a single step. Regioselective chlorination followed by a Suzuki-Miyaura cross-coupling rapidly enabled the preparation of a library of analogues which were evaluated against peptide deformylase for antibacterial activity.
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Affiliation(s)
- Mehdi Zaghouani
- Department of Chemistry and Biochemistry, Florida Atlantic University, Boca Raton, Florida 33431, USA
| | - Lena A. K. Bögeholz
- Department of Physical Biochemistry, Max Planck Institute for Biophysical Chemistry, Göttingen 37077, Germany
| | - Evan Mercier
- Department of Physical Biochemistry, Max Planck Institute for Biophysical Chemistry, Göttingen 37077, Germany
| | - Wolfgang Wintermeyer
- Department of Physical Biochemistry, Max Planck Institute for Biophysical Chemistry, Göttingen 37077, Germany
| | - Stéphane P. Roche
- Department of Chemistry and Biochemistry, Florida Atlantic University, Boca Raton, Florida 33431, USA
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