1
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Stinglhamer M, Yzeiri X, Rohlfs T, Brandhofer T, Daniliuc CG, García Mancheño O. Direct Access to Unnatural Cyclobutane α-Amino Acids through Visible Light Catalyzed [2+2]-Cycloaddition. ACS ORGANIC & INORGANIC AU 2022; 2:496-501. [PMID: 36510614 PMCID: PMC9732878 DOI: 10.1021/acsorginorgau.2c00026] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Revised: 08/03/2022] [Accepted: 08/03/2022] [Indexed: 12/16/2022]
Abstract
In this work, we report the first selective, photocatalyzed [2+2]-cycloaddition of dehydroamino acids with styrene-type olefins. This simple, mild, and scalable approach relies on the use of the triplet energy transfer catalyst [Ir(dFCF3ppy2)dtbpy]PF6 under visible light irradiation and provides fast access to value-added substituted strained cyclobutane α-amino acid derivatives.
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Affiliation(s)
- Martin Stinglhamer
- Organic
Chemistry Institute, Westfälische-Wilhelms
University Münster, Correnstraße 36, Münster 48149, Germany
| | - Xheila Yzeiri
- Department
of Biotechnology, Chemistry and Pharmacy, University of Siena, via Aldo Moro 2, 53100 Siena, Italy,Institute
of Chemistry of Organometallic Compounds, Via Madonna del Piano 10, 50019 Sesto Fiorentino, Italy
| | - Tabea Rohlfs
- Organic
Chemistry Institute, Westfälische-Wilhelms
University Münster, Correnstraße 36, Münster 48149, Germany
| | - Tobias Brandhofer
- Organic
Chemistry Institute, Westfälische-Wilhelms
University Münster, Correnstraße 36, Münster 48149, Germany
| | - Constantin G. Daniliuc
- Organic
Chemistry Institute, Westfälische-Wilhelms
University Münster, Correnstraße 36, Münster 48149, Germany
| | - Olga García Mancheño
- Organic
Chemistry Institute, Westfälische-Wilhelms
University Münster, Correnstraße 36, Münster 48149, Germany,
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2
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Verkh Y, Illa O, Ortuño RM. Synthesis of Chiral Scaffolds Based on Polyfunctional Cyclobutane β‐Amino Acids. European J Org Chem 2021. [DOI: 10.1002/ejoc.202101192] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Yaroslav Verkh
- Departament de Química Universitat Autònoma de Barcelona 08193 Cerdanyola del Vallès, Barcelona Spain
- The Boston Consulting Group RWTH Aachen University 52078 Aachen North Rhine-Westphalia Germany
| | - Ona Illa
- Departament de Química Universitat Autònoma de Barcelona 08193 Cerdanyola del Vallès, Barcelona Spain
| | - Rosa M. Ortuño
- Departament de Química Universitat Autònoma de Barcelona 08193 Cerdanyola del Vallès, Barcelona Spain
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3
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Ananikov VP, Ledovskaya MS, Voronin VV, Rodygin KS. Acetylene and Ethylene: Universal C2 Molecular Units in Cycloaddition Reactions. SYNTHESIS-STUTTGART 2021. [DOI: 10.1055/a-1654-2318] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
AbstractAcetylene and ethylene are the smallest molecules that contain an unsaturated carbon–carbon bond and can be efficiently utilized in a large variety of cycloaddition reactions. In this review, we summarize the application of these C2 molecular units in cycloaddition chemistry and highlight their amazing synthetic opportunities.1 Introduction2 Fundamental Features and Differences of Cycloaddition Reactions Involving Acetylene and Ethylene3 (2+1) Cycloaddition4 [2+2] Cycloaddition5 (3+2) Cycloaddition6 [4+2] Cycloaddition7 (2+2+1) Cycloaddition8 [2+2+2] Cycloaddition9 The Use of Acetylene and Ethylene Cycloaddition for Deuterium and 13C Labeling10 Conclusions
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Affiliation(s)
- Valentine P. Ananikov
- Institute of Chemistry, Saint Petersburg State University
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences
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4
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Demchuk OP, Hryshchuk OV, Vashchenko BV, Kozytskiy AV, Tymtsunik AV, Komarov IV, Grygorenko OO. Photochemical [2 + 2] Cycloaddition of Alkenyl Boronic Derivatives: An Entry into 3-Azabicyclo[3.2.0]heptane Scaffold. J Org Chem 2020; 85:5927-5940. [PMID: 32233365 DOI: 10.1021/acs.joc.0c00265] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The synthesis of 3-azabicyclo[3.2.0]heptyl boropinacolates and trifluoroborates via the [2 + 2] photocycloaddition of the corresponding alkenyl boronic derivatives and maleimides or maleic anhydride is described. Optimization of the reaction conditions (i.e., wavelength, concentration of the reagents, photosensitizer) was carried out, and the scope and limitations of the method were studied. Alkenyl boronic acid pinacolates were found to be more suitable for the [2 + 2] cycloaddition, providing better reaction outcomes compared to the trifluoroborates. The utility of this approach was shown by the preparation of bi- and trifunctional building blocks (21 examples), which could be easily synthesized on up to 60 g scale. These cycloadducts provide a convenient entry into the 3-azabicyclo[3.2.0]heptane scaffold through the C-C coupling or oxidative deborylation reactions.
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Affiliation(s)
- Oleksandr P Demchuk
- Enamine Ltd., Chervonotkatska Street 78, Kyiv 02094, Ukraine.,Institute of Organic Chemistry, National Academy of Sciences of Ukraine, Murmanska Street 5, Kyiv 02660, Ukraine
| | - Oleksandr V Hryshchuk
- Enamine Ltd., Chervonotkatska Street 78, Kyiv 02094, Ukraine.,Taras Shevchenko National University of Kyiv, Volodymyrska Street 60, Kyiv 01601, Ukraine
| | - Bohdan V Vashchenko
- Enamine Ltd., Chervonotkatska Street 78, Kyiv 02094, Ukraine.,Taras Shevchenko National University of Kyiv, Volodymyrska Street 60, Kyiv 01601, Ukraine
| | - Andriy V Kozytskiy
- Enamine Ltd., Chervonotkatska Street 78, Kyiv 02094, Ukraine.,L. V. Pisarzhevskii Institute of Physical Chemistry of National Academy of Sciences of Ukraine, Nauky Avenue, 31, Kyiv 03028, Ukraine
| | - Andriy V Tymtsunik
- Enamine Ltd., Chervonotkatska Street 78, Kyiv 02094, Ukraine.,National Technical University of Ukraine "Igor Sikorsky Kyiv Polytechnic Institute", Prospect Peremogy 37, Kyiv 03056, Ukraine
| | - Igor V Komarov
- Enamine Ltd., Chervonotkatska Street 78, Kyiv 02094, Ukraine.,Taras Shevchenko National University of Kyiv, Volodymyrska Street 60, Kyiv 01601, Ukraine
| | - Oleksandr O Grygorenko
- Enamine Ltd., Chervonotkatska Street 78, Kyiv 02094, Ukraine.,Taras Shevchenko National University of Kyiv, Volodymyrska Street 60, Kyiv 01601, Ukraine
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5
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Kerres S, Plut E, Malcherek S, Rehbein J, Reiser O. Visible Light‐Mediated Synthesis of Enantiopure γ‐Cyclobutane Amino and 3‐(Aminomethyl)‐5‐phenylpentanoic Acids. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201801413] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Sabine Kerres
- Institut für Organische ChemieUniversität Regensburg Universitätstrasse 31 93053 Regensburg Germany
| | - Eva Plut
- Institut für Organische ChemieUniversität Regensburg Universitätstrasse 31 93053 Regensburg Germany
| | - Simon Malcherek
- Institut für Organische ChemieUniversität Regensburg Universitätstrasse 31 93053 Regensburg Germany
| | - Julia Rehbein
- Institut für Organische ChemieUniversität Regensburg Universitätstrasse 31 93053 Regensburg Germany
| | - Oliver Reiser
- Institut für Organische ChemieUniversität Regensburg Universitätstrasse 31 93053 Regensburg Germany
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6
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Skalenko YA, Druzhenko TV, Denisenko AV, Samoilenko MV, Dacenko OP, Trofymchuk SA, Grygorenko OO, Tolmachev AA, Mykhailiuk PK. [2+2]-Photocycloaddition of N-Benzylmaleimide to Alkenes As an Approach to Functional 3-Azabicyclo[3.2.0]heptanes. J Org Chem 2018. [DOI: 10.1021/acs.joc.8b00077] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yevhen A. Skalenko
- Enamine Ltd., Chervonotkatska 78, Kyiv 02094, Ukraine (www.enamine.net, www.mykhailiukchem.org)
- Institute of High Technologies, Academician Glushkov av. 4G, Kyiv 03022, Ukraine
| | - Tetiana V. Druzhenko
- Enamine Ltd., Chervonotkatska 78, Kyiv 02094, Ukraine (www.enamine.net, www.mykhailiukchem.org)
- Institute of High Technologies, Academician Glushkov av. 4G, Kyiv 03022, Ukraine
| | - Aleksandr V. Denisenko
- Enamine Ltd., Chervonotkatska 78, Kyiv 02094, Ukraine (www.enamine.net, www.mykhailiukchem.org)
- Department of Chemistry, Taras Shevchenko National University of Kyiv, Volodymyrska 64, Kyiv 01601, Ukraine
| | - Maryna V. Samoilenko
- Enamine Ltd., Chervonotkatska 78, Kyiv 02094, Ukraine (www.enamine.net, www.mykhailiukchem.org)
| | - Oleksandr P. Dacenko
- Enamine Ltd., Chervonotkatska 78, Kyiv 02094, Ukraine (www.enamine.net, www.mykhailiukchem.org)
| | - Serhii A. Trofymchuk
- Enamine Ltd., Chervonotkatska 78, Kyiv 02094, Ukraine (www.enamine.net, www.mykhailiukchem.org)
| | - Oleksandr O. Grygorenko
- Enamine Ltd., Chervonotkatska 78, Kyiv 02094, Ukraine (www.enamine.net, www.mykhailiukchem.org)
- Department of Chemistry, Taras Shevchenko National University of Kyiv, Volodymyrska 64, Kyiv 01601, Ukraine
| | - Andrey A. Tolmachev
- Enamine Ltd., Chervonotkatska 78, Kyiv 02094, Ukraine (www.enamine.net, www.mykhailiukchem.org)
- Department of Chemistry, Taras Shevchenko National University of Kyiv, Volodymyrska 64, Kyiv 01601, Ukraine
| | - Pavel K. Mykhailiuk
- Enamine Ltd., Chervonotkatska 78, Kyiv 02094, Ukraine (www.enamine.net, www.mykhailiukchem.org)
- Department of Chemistry, Taras Shevchenko National University of Kyiv, Volodymyrska 64, Kyiv 01601, Ukraine
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7
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Chang Z, Boyaud F, Guillot R, Boddaert T, Aitken DJ. A Photochemical Route to 3- and 4-Hydroxy Derivatives of 2-Aminocyclobutane-1-carboxylic Acid with an all-cis Geometry. J Org Chem 2017; 83:527-534. [DOI: 10.1021/acs.joc.7b02559] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Zong Chang
- CP3A
Organic Synthesis Group, ICMMO, CNRS UMR 8182, Université Paris
Sud, Université Paris Saclay, 15 rue Georges Clemenceau, 91405 Orsay Cedex, France
| | - France Boyaud
- CP3A
Organic Synthesis Group, ICMMO, CNRS UMR 8182, Université Paris
Sud, Université Paris Saclay, 15 rue Georges Clemenceau, 91405 Orsay Cedex, France
| | - Régis Guillot
- Services
Communs, ICMMO, CNRS UMR 8182, Université Paris Sud, Université Paris Saclay, 15 rue Georges Clemenceau, 91405 Orsay Cedex, France
| | - Thomas Boddaert
- CP3A
Organic Synthesis Group, ICMMO, CNRS UMR 8182, Université Paris
Sud, Université Paris Saclay, 15 rue Georges Clemenceau, 91405 Orsay Cedex, France
| | - David J. Aitken
- CP3A
Organic Synthesis Group, ICMMO, CNRS UMR 8182, Université Paris
Sud, Université Paris Saclay, 15 rue Georges Clemenceau, 91405 Orsay Cedex, France
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8
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Awada H, Grison CM, Charnay-Pouget F, Baltaze JP, Brisset F, Guillot R, Robin S, Hachem A, Jaber N, Naoufal D, Yazbeck O, Aitken DJ. Conformational Effects through Hydrogen Bonding in a Constrained γ-Peptide Template: From Intraresidue Seven-Membered Rings to a Gel-Forming Sheet Structure. J Org Chem 2017; 82:4819-4828. [PMID: 28398045 DOI: 10.1021/acs.joc.7b00494] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
A series of three short oligomers (di-, tri-, and tetramers) of cis-2-(aminomethyl)cyclobutane carboxylic acid, a γ-amino acid featuring a cyclobutane ring constraint, were prepared, and their conformational behavior was examined spectroscopically and by molecular modeling. In dilute solutions, these peptides showed a number of low-energy conformers, including ribbonlike structures pleated around a rarely observed series of intramolecular seven-membered hydrogen bonds. In more concentrated solutions, these interactions defer to an organized supramolecular assembly, leading to thermoreversible organogel formation notably for the tripeptide, which produced fibrillar xerogels. In the solid state, the dipeptide adopted a fully extended conformation featuring a one-dimensional network of intermolecularly H-bonded molecules stacked in an antiparallel sheet alignment. This work provides unique insight into the interplay between inter- and intramolecular H-bonded conformer topologies for the same peptide template.
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Affiliation(s)
- Hawraà Awada
- CP3A Organic Synthesis Group and Services Communs, ICMMO, UMR 8182, CNRS, Université Paris Sud, Université Paris Saclay , Bât. 420, 15 rue Georges Clemenceau, 91405 Orsay cedex, France.,Inorganic and Organometallic Coordination Chemistry Laboratory and Laboratory for Medicinal Chemistry and Natural Products, Faculty of Sciences (I) & PRASE-EDST, Lebanese University , Hadath, Lebanon
| | - Claire M Grison
- CP3A Organic Synthesis Group and Services Communs, ICMMO, UMR 8182, CNRS, Université Paris Sud, Université Paris Saclay , Bât. 420, 15 rue Georges Clemenceau, 91405 Orsay cedex, France
| | - Florence Charnay-Pouget
- CP3A Organic Synthesis Group and Services Communs, ICMMO, UMR 8182, CNRS, Université Paris Sud, Université Paris Saclay , Bât. 420, 15 rue Georges Clemenceau, 91405 Orsay cedex, France
| | - Jean-Pierre Baltaze
- CP3A Organic Synthesis Group and Services Communs, ICMMO, UMR 8182, CNRS, Université Paris Sud, Université Paris Saclay , Bât. 420, 15 rue Georges Clemenceau, 91405 Orsay cedex, France
| | - François Brisset
- CP3A Organic Synthesis Group and Services Communs, ICMMO, UMR 8182, CNRS, Université Paris Sud, Université Paris Saclay , Bât. 420, 15 rue Georges Clemenceau, 91405 Orsay cedex, France
| | - Régis Guillot
- CP3A Organic Synthesis Group and Services Communs, ICMMO, UMR 8182, CNRS, Université Paris Sud, Université Paris Saclay , Bât. 420, 15 rue Georges Clemenceau, 91405 Orsay cedex, France
| | - Sylvie Robin
- CP3A Organic Synthesis Group and Services Communs, ICMMO, UMR 8182, CNRS, Université Paris Sud, Université Paris Saclay , Bât. 420, 15 rue Georges Clemenceau, 91405 Orsay cedex, France.,UFR Sciences Pharmaceutiques et Biologiques, Université Paris Descartes , 4 avenue de l'Observatoire, 75270 Paris cedex 06, France
| | - Ali Hachem
- Inorganic and Organometallic Coordination Chemistry Laboratory and Laboratory for Medicinal Chemistry and Natural Products, Faculty of Sciences (I) & PRASE-EDST, Lebanese University , Hadath, Lebanon
| | - Nada Jaber
- Inorganic and Organometallic Coordination Chemistry Laboratory and Laboratory for Medicinal Chemistry and Natural Products, Faculty of Sciences (I) & PRASE-EDST, Lebanese University , Hadath, Lebanon
| | - Daoud Naoufal
- Inorganic and Organometallic Coordination Chemistry Laboratory and Laboratory for Medicinal Chemistry and Natural Products, Faculty of Sciences (I) & PRASE-EDST, Lebanese University , Hadath, Lebanon
| | - Ogaritte Yazbeck
- Inorganic and Organometallic Coordination Chemistry Laboratory and Laboratory for Medicinal Chemistry and Natural Products, Faculty of Sciences (I) & PRASE-EDST, Lebanese University , Hadath, Lebanon
| | - David J Aitken
- CP3A Organic Synthesis Group and Services Communs, ICMMO, UMR 8182, CNRS, Université Paris Sud, Université Paris Saclay , Bât. 420, 15 rue Georges Clemenceau, 91405 Orsay cedex, France
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9
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Jirásek M, Straková K, Neveselý T, Svobodová E, Rottnerová Z, Cibulka R. Flavin-Mediated Visible-Light [2+2] Photocycloaddition of Nitrogen- and Sulfur-Containing Dienes. European J Org Chem 2017. [DOI: 10.1002/ejoc.201601377] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Michael Jirásek
- Department of Organic Chemistry; University of Chemistry and Technology, Prague; Technická 5 16628 Prague Czech Republic
| | - Karolína Straková
- Department of Organic Chemistry; University of Chemistry and Technology, Prague; Technická 5 16628 Prague Czech Republic
| | - Tomáš Neveselý
- Department of Organic Chemistry; University of Chemistry and Technology, Prague; Technická 5 16628 Prague Czech Republic
| | - Eva Svobodová
- Department of Organic Chemistry; University of Chemistry and Technology, Prague; Technická 5 16628 Prague Czech Republic
| | - Zdeňka Rottnerová
- Central Laboratories; University of Chemistry and Technology, Prague; Prague Czech Republic
| | - Radek Cibulka
- Department of Organic Chemistry; University of Chemistry and Technology, Prague; Technická 5 16628 Prague Czech Republic
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10
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Ordóñez M, Cativiela C, Romero-Estudillo I. An update on the stereoselective synthesis of γ-amino acids. ACTA ACUST UNITED AC 2016. [DOI: 10.1016/j.tetasy.2016.08.011] [Citation(s) in RCA: 58] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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11
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Kassir AF, Ragab SS, Nguyen TAM, Charnay-Pouget F, Guillot R, Scherrmann MC, Boddaert T, Aitken DJ. Synthetic Access to All Four Stereoisomers of Oxetin. J Org Chem 2016; 81:9983-9991. [DOI: 10.1021/acs.joc.6b01795] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
| | - Sherif S. Ragab
- Photochemistry
Department, Chemical Industries Research Division, National Research Center, Dokki, 12622 Giza, Egypt
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12
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Poplata S, Tröster A, Zou YQ, Bach T. Recent Advances in the Synthesis of Cyclobutanes by Olefin [2 + 2] Photocycloaddition Reactions. Chem Rev 2016; 116:9748-815. [PMID: 27018601 PMCID: PMC5025837 DOI: 10.1021/acs.chemrev.5b00723] [Citation(s) in RCA: 646] [Impact Index Per Article: 80.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2015] [Indexed: 11/30/2022]
Abstract
The [2 + 2] photocycloaddition is undisputedly the most important and most frequently used photochemical reaction. In this review, it is attempted to cover all recent aspects of [2 + 2] photocycloaddition chemistry with an emphasis on synthetically relevant, regio-, and stereoselective reactions. The review aims to comprehensively discuss relevant work, which was done in the field in the last 20 years (i.e., from 1995 to 2015). Organization of the data follows a subdivision according to mechanism and substrate classes. Cu(I) and PET (photoinduced electron transfer) catalysis are treated separately in sections 2 and 4 , whereas the vast majority of photocycloaddition reactions which occur by direct excitation or sensitization are divided within section 3 into individual subsections according to the photochemically excited olefin.
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Affiliation(s)
- Saner Poplata
- Department Chemie and Catalysis
Research Center (CRC), Technische Universität
München, D-85747 Garching, Germany
| | - Andreas Tröster
- Department Chemie and Catalysis
Research Center (CRC), Technische Universität
München, D-85747 Garching, Germany
| | - You-Quan Zou
- Department Chemie and Catalysis
Research Center (CRC), Technische Universität
München, D-85747 Garching, Germany
| | - Thorsten Bach
- Department Chemie and Catalysis
Research Center (CRC), Technische Universität
München, D-85747 Garching, Germany
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13
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Pelkey ET, Pelkey SJ, Greger JG. De Novo Synthesis of 3-Pyrrolin-2-Ones. ADVANCES IN HETEROCYCLIC CHEMISTRY 2015. [DOI: 10.1016/bs.aihch.2015.04.001] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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14
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Awada H, Robin S, Guillot R, Yazbeck O, Naoufal D, Jaber N, Hachem A, Aitken DJ. Practical Syntheses of Both Enantiomers of the Conformationally Restricted GABA Analoguecis-(2-Aminocyclobutyl)acetic Acid. European J Org Chem 2014. [DOI: 10.1002/ejoc.201402676] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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15
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Stereocontrolled synthesis and functionalization of cyclobutanes and cyclobutanones. Molecules 2013; 18:15541-72. [PMID: 24352013 PMCID: PMC6269998 DOI: 10.3390/molecules181215541] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2013] [Revised: 12/09/2013] [Accepted: 12/11/2013] [Indexed: 02/02/2023] Open
Abstract
In the last decade a certain number of new cyclobutane and cyclobutanone synthesis and functionalization protocols have been published. Organo- and biocatalyzed eco-friendly approaches to cyclobutane-containing molecules have been developed with interesting results. Also, successful new total synthesis of bioactive compounds and drugs have been recently reported where a four membered ring represented the key intermediate. Therefore, the rising interest in this field represents a great point of discussion for the scientific community, disclosing the synthetic potential of strained four membered ring carbocyclic compounds. Herein we report a critical survey on the literature concerning the enantiocontrolled synthesis and functionalization of cyclobutane derivatives, with particular attention to metal-free, low impact methodologies, published during the period 2000-2013.
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16
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A compendium of cyclic sugar amino acids and their carbocyclic and heterocyclic nitrogen analogues. Amino Acids 2013; 45:613-89. [DOI: 10.1007/s00726-013-1521-1] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2013] [Accepted: 05/21/2013] [Indexed: 12/19/2022]
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17
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18
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O’Reilly E, Pes L, Ortin Y, Müller-Bunz H, Paradisi F. Synthesis of a conformationally constrained δ-amino acid building block. Amino Acids 2012; 44:511-8. [DOI: 10.1007/s00726-012-1362-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2012] [Accepted: 07/06/2012] [Indexed: 10/28/2022]
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19
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Guo L, Zhang W, Guzei IA, Spencer LC, Gellman SH. New preorganized γ-amino acids as foldamer building blocks. Org Lett 2012; 14:2582-5. [PMID: 22568480 PMCID: PMC3445736 DOI: 10.1021/ol3008815] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
An asymmetric synthesis of two new diastereomeric γ-amino acids is described. Both molecules contain a cyclohexyl ring to limit conformational flexibility about the Cα-Cβ bond; they differ in having cis vs trans stereochemistry on the ring. Residues derived from the cis γ isomer are shown to support helical secondary structures in α/γ-peptide oligomers.
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Affiliation(s)
- Li Guo
- Department of Chemistry, University of Wisconsin, Madison, WI 53706 USA
| | - Weicheng Zhang
- Department of Chemistry, University of Wisconsin, Madison, WI 53706 USA
| | - Ilia A. Guzei
- Department of Chemistry, University of Wisconsin, Madison, WI 53706 USA
| | - Lara C. Spencer
- Department of Chemistry, University of Wisconsin, Madison, WI 53706 USA
| | - Samuel H. Gellman
- Department of Chemistry, University of Wisconsin, Madison, WI 53706 USA
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