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Núñez-Villanueva D, Bonache MÁ, Infantes L, García-López MT, Martín-Martínez M, González-Muñiz R. Quaternary α,α-2-Oxoazepane α-Amino Acids: Synthesis from Ornithine-Derived β-Lactams and Incorporation into Model Dipeptides. J Org Chem 2011; 76:6592-603. [DOI: 10.1021/jo200894d] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
| | - M. Ángeles Bonache
- Instituto de Química Médica (IQM-CSIC), Juan de la Cierva 3, 28006 Madrid, Spain
| | - Lourdes Infantes
- Instituto de Química Física Rocasolano (IQFR-CSIC), Serrano 119, 28006 Madrid, Spain
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15
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Toniolo C, Crisma M, Formaggio F, Peggion C. Control of peptide conformation by the Thorpe-Ingold effect (C alpha-tetrasubstitution). Biopolymers 2002; 60:396-419. [PMID: 12209474 DOI: 10.1002/1097-0282(2001)60:6<396::aid-bip10184>3.0.co;2-7] [Citation(s) in RCA: 580] [Impact Index Per Article: 26.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
The preferred conformations of peptides heavily based on the currently extensively exploited achiral and chiral alpha-amino acids with a quaternary alpha-carbon atom, as determined by conformational energy computations, crystal-state (x-ray diffraction) analyses, and solution ((1)H-NMR and spectroscopic) investigations, are reviewed. It is concluded that 3(10)/alpha-helical structures and the fully extended (C(5)) conformation are preferentially adopted by peptide sequences characterized by this family of amino acids, depending upon overall bulkiness and nature (e.g., whether acyclic or C(alpha) (i) <--> C(alpha) (i) cyclized) of their side chains. The intriguing relationship between alpha-carbon chirality and bend/helix handedness is also illustrated. gamma-Bends and semiextended conformations are rarely observed. Formation of beta-sheet structures is prevented.
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Affiliation(s)
- C Toniolo
- Department of Organic Chemistry, University of Padova, Institute of Biomolecular Chemistry, CNR, 35131 Padova, Italy.
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18
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Jiménez AI, Cativiela C, Gómez-Catalán J, Pérez JJ, Aubry A, París M, Marraud M. Influence of Side Chain Restriction and NH···π Interaction on the β-Turn Folding Modes of Dipeptides Incorporating Phenylalanine Cyclohexane Derivatives. J Am Chem Soc 2000. [DOI: 10.1021/ja993568k] [Citation(s) in RCA: 55] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ana I. Jiménez
- Contribution from the Department of Organic Chemistry, ICMA, CSIC−University of Zaragoza, 50009 Zaragoza, Spain, Department of Chemical Engineering, Technical University of Catalonia, 08028 Barcelona, Spain, Laboratory of Crystallography and Modeling of Mineral and Biological Materials, ESA-7036, University Henri Poincaré of Nancy, BP 236, 54509 Vandoeuvre, France, and Laboratory of Macromolecular Physical Chemistry, UMR-7568 CNRS-INPL, ENSIC, BP 451, 54001 Nancy, France
| | - Carlos Cativiela
- Contribution from the Department of Organic Chemistry, ICMA, CSIC−University of Zaragoza, 50009 Zaragoza, Spain, Department of Chemical Engineering, Technical University of Catalonia, 08028 Barcelona, Spain, Laboratory of Crystallography and Modeling of Mineral and Biological Materials, ESA-7036, University Henri Poincaré of Nancy, BP 236, 54509 Vandoeuvre, France, and Laboratory of Macromolecular Physical Chemistry, UMR-7568 CNRS-INPL, ENSIC, BP 451, 54001 Nancy, France
| | - Jesús Gómez-Catalán
- Contribution from the Department of Organic Chemistry, ICMA, CSIC−University of Zaragoza, 50009 Zaragoza, Spain, Department of Chemical Engineering, Technical University of Catalonia, 08028 Barcelona, Spain, Laboratory of Crystallography and Modeling of Mineral and Biological Materials, ESA-7036, University Henri Poincaré of Nancy, BP 236, 54509 Vandoeuvre, France, and Laboratory of Macromolecular Physical Chemistry, UMR-7568 CNRS-INPL, ENSIC, BP 451, 54001 Nancy, France
| | - Juan J. Pérez
- Contribution from the Department of Organic Chemistry, ICMA, CSIC−University of Zaragoza, 50009 Zaragoza, Spain, Department of Chemical Engineering, Technical University of Catalonia, 08028 Barcelona, Spain, Laboratory of Crystallography and Modeling of Mineral and Biological Materials, ESA-7036, University Henri Poincaré of Nancy, BP 236, 54509 Vandoeuvre, France, and Laboratory of Macromolecular Physical Chemistry, UMR-7568 CNRS-INPL, ENSIC, BP 451, 54001 Nancy, France
| | - André Aubry
- Contribution from the Department of Organic Chemistry, ICMA, CSIC−University of Zaragoza, 50009 Zaragoza, Spain, Department of Chemical Engineering, Technical University of Catalonia, 08028 Barcelona, Spain, Laboratory of Crystallography and Modeling of Mineral and Biological Materials, ESA-7036, University Henri Poincaré of Nancy, BP 236, 54509 Vandoeuvre, France, and Laboratory of Macromolecular Physical Chemistry, UMR-7568 CNRS-INPL, ENSIC, BP 451, 54001 Nancy, France
| | - Miguel París
- Contribution from the Department of Organic Chemistry, ICMA, CSIC−University of Zaragoza, 50009 Zaragoza, Spain, Department of Chemical Engineering, Technical University of Catalonia, 08028 Barcelona, Spain, Laboratory of Crystallography and Modeling of Mineral and Biological Materials, ESA-7036, University Henri Poincaré of Nancy, BP 236, 54509 Vandoeuvre, France, and Laboratory of Macromolecular Physical Chemistry, UMR-7568 CNRS-INPL, ENSIC, BP 451, 54001 Nancy, France
| | - Michel Marraud
- Contribution from the Department of Organic Chemistry, ICMA, CSIC−University of Zaragoza, 50009 Zaragoza, Spain, Department of Chemical Engineering, Technical University of Catalonia, 08028 Barcelona, Spain, Laboratory of Crystallography and Modeling of Mineral and Biological Materials, ESA-7036, University Henri Poincaré of Nancy, BP 236, 54509 Vandoeuvre, France, and Laboratory of Macromolecular Physical Chemistry, UMR-7568 CNRS-INPL, ENSIC, BP 451, 54001 Nancy, France
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