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Hirata T, Ueda A, Oba M, Doi M, Demizu Y, Kurihara M, Nagano M, Suemune H, Tanaka M. Amino equatorial effect of a six-membered ring amino acid on its peptide 310- and α-helices. Tetrahedron 2015. [DOI: 10.1016/j.tet.2015.02.075] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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2
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Greenfield AA, Butera JA. Convenient Synthesis and Isolation of Conformationally Rigid Glutamic Acid Analogues. SYNTHETIC COMMUN 2011. [DOI: 10.1081/scc-200034791] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- A. A. Greenfield
- a Chemical and Screening Sciences , Wyeth Research , CN 8000, Princeton, New Jersey, 08543‐8000, USA
| | - J. A. Butera
- a Chemical and Screening Sciences , Wyeth Research , CN 8000, Princeton, New Jersey, 08543‐8000, USA
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3
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Yu XQ, Shirai T, Yamamoto Y, Miyaura N. Rhodium-Catalyzed 1,4-Addition of Lithium 2-Furyltriolborates to Unsaturated Ketones and Esters for Enantioselective Synthesis of γ-Oxo-Carboxylic Acids By Oxidation of the Furyl Ring with Ozone. Chem Asian J 2011; 6:932-7. [DOI: 10.1002/asia.201000589] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2010] [Indexed: 11/08/2022]
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4
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Wallace GA, Gordon TD, Hayes ME, Konopacki DB, Fix-Stenzel SR, Zhang X, Grongsaard P, Cusack KP, Schaffter LM, Henry RF, Stoffel RH. Scalable Synthesis and Isolation of the Four Stereoisomers of Methyl 1-Amino-3-(4-bromophenyl)cyclopentanecarboxylate, Useful Intermediates for the Synthesis of S1P1 Receptor Agonists. J Org Chem 2009; 74:4886-9. [DOI: 10.1021/jo900376b] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Grier A. Wallace
- Abbott Bioresearch Center, Medicinal Chemistry Department, 381 Plantation Street, Worcester, Massachusetts 01605, Abbott Laboratories, Structural Chemistry Department, Building AP9, 100 Abbott Park Road, Abbott Park, Illinois 60064, and Genzyme, 500 Kendell Street, Cambridge, Massachusetts 02142
| | - Thomas D. Gordon
- Abbott Bioresearch Center, Medicinal Chemistry Department, 381 Plantation Street, Worcester, Massachusetts 01605, Abbott Laboratories, Structural Chemistry Department, Building AP9, 100 Abbott Park Road, Abbott Park, Illinois 60064, and Genzyme, 500 Kendell Street, Cambridge, Massachusetts 02142
| | - Martin E. Hayes
- Abbott Bioresearch Center, Medicinal Chemistry Department, 381 Plantation Street, Worcester, Massachusetts 01605, Abbott Laboratories, Structural Chemistry Department, Building AP9, 100 Abbott Park Road, Abbott Park, Illinois 60064, and Genzyme, 500 Kendell Street, Cambridge, Massachusetts 02142
| | - Donald B. Konopacki
- Abbott Bioresearch Center, Medicinal Chemistry Department, 381 Plantation Street, Worcester, Massachusetts 01605, Abbott Laboratories, Structural Chemistry Department, Building AP9, 100 Abbott Park Road, Abbott Park, Illinois 60064, and Genzyme, 500 Kendell Street, Cambridge, Massachusetts 02142
| | - Shannon R. Fix-Stenzel
- Abbott Bioresearch Center, Medicinal Chemistry Department, 381 Plantation Street, Worcester, Massachusetts 01605, Abbott Laboratories, Structural Chemistry Department, Building AP9, 100 Abbott Park Road, Abbott Park, Illinois 60064, and Genzyme, 500 Kendell Street, Cambridge, Massachusetts 02142
| | - Xiaolei Zhang
- Abbott Bioresearch Center, Medicinal Chemistry Department, 381 Plantation Street, Worcester, Massachusetts 01605, Abbott Laboratories, Structural Chemistry Department, Building AP9, 100 Abbott Park Road, Abbott Park, Illinois 60064, and Genzyme, 500 Kendell Street, Cambridge, Massachusetts 02142
| | - Pintipa Grongsaard
- Abbott Bioresearch Center, Medicinal Chemistry Department, 381 Plantation Street, Worcester, Massachusetts 01605, Abbott Laboratories, Structural Chemistry Department, Building AP9, 100 Abbott Park Road, Abbott Park, Illinois 60064, and Genzyme, 500 Kendell Street, Cambridge, Massachusetts 02142
| | - Kevin P. Cusack
- Abbott Bioresearch Center, Medicinal Chemistry Department, 381 Plantation Street, Worcester, Massachusetts 01605, Abbott Laboratories, Structural Chemistry Department, Building AP9, 100 Abbott Park Road, Abbott Park, Illinois 60064, and Genzyme, 500 Kendell Street, Cambridge, Massachusetts 02142
| | - Lisa M. Schaffter
- Abbott Bioresearch Center, Medicinal Chemistry Department, 381 Plantation Street, Worcester, Massachusetts 01605, Abbott Laboratories, Structural Chemistry Department, Building AP9, 100 Abbott Park Road, Abbott Park, Illinois 60064, and Genzyme, 500 Kendell Street, Cambridge, Massachusetts 02142
| | - Rodger F. Henry
- Abbott Bioresearch Center, Medicinal Chemistry Department, 381 Plantation Street, Worcester, Massachusetts 01605, Abbott Laboratories, Structural Chemistry Department, Building AP9, 100 Abbott Park Road, Abbott Park, Illinois 60064, and Genzyme, 500 Kendell Street, Cambridge, Massachusetts 02142
| | - Robert H. Stoffel
- Abbott Bioresearch Center, Medicinal Chemistry Department, 381 Plantation Street, Worcester, Massachusetts 01605, Abbott Laboratories, Structural Chemistry Department, Building AP9, 100 Abbott Park Road, Abbott Park, Illinois 60064, and Genzyme, 500 Kendell Street, Cambridge, Massachusetts 02142
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Abstract
For the second-generation asymmetric synthesis of the trans-tris(homoglutamic) acids via Strecker reaction of chiral ketimines, the cyanide addition as the key stereodifferentiating step produces mixtures of diastereomeric alpha-amino nitrile esters the composition of which is independent of the reaction temperature and the type of the solvent, respectively. The subsequent hydrolysis is exclusively achieved with concentrated H(2)SO(4) yielding diastereomeric mixtures of three secondary alpha-amino alpha-carbamoyl-gamma-esters and two diastereomeric cis-fused angular alpha-carbamoyl gamma-lactams as bicyclic glutamic acid derivatives, gained from in situ stereomer differentiating cyclisation of the secondary cis-alpha-amino alpha-carbamoyl-gamma-esters. Separation was achieved by CC. The pure secondary trans-alpha-amino alpha-carbamoyl-gamma-esters cyclise on heating and treatment with concentrated H(2)SO(4), respectively, to diastereomeric cis-fused angular secondary alpha-amino imides. Their hydrogenolysis led to the enantiomeric cis-fused angular primary alpha-amino imides. The configuration of all compounds was completely established by NMR methods, CD-spectra, and by X-ray analyses of the (alphaR,1R,5R)-1-carbamoyl-2-(1-phenylethyl)-2-azabicyclo[3.3.0]octan-3-one and of the trans-alphaS,1S,2R-2-ethoxycarbonylmethyl-1-(1-phenylethylamino)cyclopentanecarboxamide.
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Affiliation(s)
- Udo Meyer
- Department of Pharmaceutical Chemistry, Albert-Ludwigs-Universität, Freiburg, Germany
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Meyer U, Bisel P, Bräuner-Osborne H, Madsen U, Höfner G, Wanner KT, Frahm AW. Rigid nonproteinogenic cyclic amino acids as ligands for glutamate receptors:trans-Tris(homoglutamic) acids. Chirality 2005; 17:99-107. [PMID: 15660439 DOI: 10.1002/chir.20110] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The second-generation asymmetric synthesis of the trans-tris(homoglutamic) acids reported herein proceeds via Strecker reaction of chiral ketimines, obtained from condensation of racemic 2-ethoxycarbonylmethylcyclopentanone and commercially available (S)- and (R)-1-phenylethylamine, respectively. In the key stereodifferentiating step, the cyanide addition leads to mixtures of diastereomeric alpha-amino nitrile-esters, the composition of which is independent of the reaction temperature and the type of the solvent, respectively. Hydrolysis of the alpha-amino nitrile-esters with concentrated H(2)SO(4) yielded diastereomeric mixtures of secondary alpha-amino amido-esters, which after separation were hydrogenolyzed and hydrolyzed each to the enantiomeric trans-1-amino-2-carboxymethylcyclopentanecarboxylic acids. Their configuration was completely established by NMR methods, CD spectra, and X-ray analysis of the trans-1S,2R-configured secondary alpha-amino amido-ester. In receptor binding assays and functional tests, trans-1S,2R-1-amino-2-carboxymethylcyclopentanecarboxylic acid hydrochloride was found to behave as a selective mGluR(2)-antagonist without relevant binding properties at iGluRs.
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Affiliation(s)
- Udo Meyer
- Department of Pharmaceutical Chemistry, Albert-Ludwigs-Universität, Freiburg, Germany
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8
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Kotha S, Ghosh AK. A Diels–Alder approach for the synthesis of highly functionalized benzo-annulated indane-based α-amino acid derivatives via a sultine intermediate. Tetrahedron Lett 2004. [DOI: 10.1016/j.tetlet.2004.02.060] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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9
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Bradley DM, Mapitse R, Thomson NM, Hayes CJ. Enantioselective synthesis of the excitatory amino acid (1S,3R)-1-aminocyclopentane-1,3-dicarboxylic acid. J Org Chem 2002; 67:7613-7. [PMID: 12398480 DOI: 10.1021/jo025892v] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
An enantioselective synthesis of the alpha,alpha-dialkyl-alpha-amino acid (1S,3R)-ACPD has been achieved using an alkylidene carbene 1,5-CH insertion reaction as a key step. The ketone cyclization precursor was synthesized from Garner's aldehyde in high yield via a Wittig homologation and subsequent catalytic hydrogenation. Treatment of the ketone with 1.2 equiv of lithio(trimethylsilyl)diazomethane in THF resulted in the formation of the corresponding cyclopentene-containing CH-insertion product in 62-69% yield in high enantiomeric excess. Subsequent functional group manipulation allowed the synthesis of the amino acid (1S,3R)-ACPD to be completed.
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Affiliation(s)
- Daniel M Bradley
- The School of Chemistry, University of Nottingham, University Park, UK
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11
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Kotha S, Brahmachary E. Synthesis of constrained phenylalanine derivatives via a [2+2+2] cycloaddition strategy. Bioorg Med Chem 2002; 10:2291-5. [PMID: 11983526 DOI: 10.1016/s0968-0896(02)00039-1] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A simple synthesis of dialkyne building blocks (6, 7, 8 and 9) embodying amino acid moiety is described. The dialkyne 6 participated in a [2+2+2] cycloaddition reaction with various monoalkynes in presence of Wilkinson's catalyst to give 5- and 5,6-disubstituted indan-based -amino acid derivatives. Cobalt catalyst [e.g., CpCo(CO)2] has also been employed in the synthesis of various 2-indanyl glycine derivatives via co-trimerization reaction of the diyne building blocks 6 and 7 with several monoalkynes.
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Affiliation(s)
- Sambasivarao Kotha
- Department of Chemistry, Indian Institute of Technology-Bombay, Mumbai-400 076, India.
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12
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Fonteneau L, Rosa S, Buisson D. Chemoenzymatic synthesis of enantiopure isopropyl (3R)- and (3S)-3-hydroxycyclohex-1-ene-1-carboxylates and their reduction to isomers of isopropyl 3-hydroxy-cyclohexane-1-carboxylate. ACTA ACUST UNITED AC 2002. [DOI: 10.1016/s0957-4166(02)00152-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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13
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Kotha S, Sreenivasachary N, Brahmachary E. Synthesis of benzocycloheptene-based amino acid derivatives via a [4+2] cycloaddition reaction as a key step. Tetrahedron 2001. [DOI: 10.1016/s0040-4020(01)00575-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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14
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Kotha S, Sreenivasachary N, Brahmachary E. Constrained Phenylalanine Derivatives by Enyne Metathesis and Diels−Alder Reaction. European J Org Chem 2001. [DOI: 10.1002/1099-0690(200102)2001:4<787::aid-ejoc787>3.0.co;2-n] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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15
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Kotha S, Ganesh T, Ghosh AK. Diels-Alder approach to tetralin-based constrained alpha-amino acid derivatives. Bioorg Med Chem Lett 2000; 10:1755-7. [PMID: 10937741 DOI: 10.1016/s0960-894x(00)00333-4] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Tetralin-based constrained alpha-amino acid derivatives were prepared via [4 + 2]-cycloaddition reaction as a key step. Here sultine is used as a latent diene and 2-acetamidoacrylate serves as a dienophile component.
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Affiliation(s)
- S Kotha
- Department of Chemistry, Indian Institute of Technology-Bombay, Mumbai.
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16
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17
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Gabaitsekgosi R, Hayes CJ. An alkylidene carbene CH insertion strategy for the enantioselective synthesis of α,α-dialkyl-α-amino acids. Tetrahedron Lett 1999. [DOI: 10.1016/s0040-4039(99)01613-5] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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18
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On the possibility of carbamate-directed hydroboration. An approach to the asymmetric synthesis of 1-aminocyclopentane-1,3-dicarboxylic acid. Tetrahedron 1999. [DOI: 10.1016/s0040-4020(99)00596-7] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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19
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Carbamate-directed hydroboration: enantioselective synthesis of the excitatory amino acid 1-aminocyclopentane-1,3-dicarboxylic acid. Tetrahedron Lett 1998. [DOI: 10.1016/s0040-4039(98)00490-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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20
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Tellier F, Acher F, Brabet I, Pin JP, Azerad R. Aminobicyclo[2.2.1.]heptane dicarboxylic acids (ABHD), rigid analogs of ACPD and glutamic acid: synthesis and pharmacological activity on metabotropic receptors mGluR1 and mGluR2. Bioorg Med Chem 1998; 6:195-208. [PMID: 9547943 DOI: 10.1016/s0968-0896(97)10031-1] [Citation(s) in RCA: 49] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Isomeric norbornane-derived rigid analogs mimicking different potential conformations of ACPD (1-aminocyclopentane-1,3-dicarboxylic acid) and glutamic acid have been synthesized, via the hydantoin route, to be used as conformational probes for bioactive conformations at the glutamatergic receptors of the central nervous system. Activities on metabotropic receptors mGluR1 and mGluR2 are reported and discussed.
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Affiliation(s)
- F Tellier
- Laboratoire de Chimie et Biochimie Pharmacologiques et Toxicologiques, URA 400 CNRS, Université René Descartes-Paris V, France
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de Raadt A, Griengl H, Petsch M, Plachota P, Schoo N, Weber H, Braunegg G, Kopper I, Kreiner M, Zeiser A. Microbial hydroxylation of 2-cycloalkylbenoxazoles. Part II. Determination of product structures and enhancement of enantiomeric excess. ACTA ACUST UNITED AC 1996. [DOI: 10.1016/0957-4166(96)00031-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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22
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High-pressure and thermally induced asymmetric diels-alder cycloadditions of heterosubstituted dienes to homochiral α,β-didehydro amino acid derivatives. ACTA ACUST UNITED AC 1996. [DOI: 10.1016/0957-4166(95)00429-7] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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23
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Tellier F, Acher F, Brabet I, Pin JP, Bockaert J, Azerad R. Synthesis of conformationally-constrained stereospecific analogs of glutamic acid as antagonists of metabotropic receptors. Bioorg Med Chem Lett 1995. [DOI: 10.1016/0960-894x(95)00457-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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24
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Alonso F, Micó I, Nájera C, Sansano JM, Yus M, Ezquerra J, Yruretagoyena B, Gracia I. Synthesis of 3- and 4-substituted cyclic α-amino acids structurally related to ACPD. Tetrahedron 1995. [DOI: 10.1016/0040-4020(95)00586-w] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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25
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Asymmetric syntheses of all four isomers of 4-amino-4-carboxyproline: Novel conformationally restricted glutamic acid analogues. ACTA ACUST UNITED AC 1995. [DOI: 10.1016/0957-4166(95)00209-8] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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26
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Ezquerra J, Yruretagoyena B, Avendaño C, de la Cuesta E, González R, Prieto L, Pedregal C, Espada M, Prowse W. Conformationally constrained ACPD analogues. Synthesis and resolution of 3-aminobicyclo[3,3,0]octane-1,3-dicarboxylic acids. Tetrahedron 1995. [DOI: 10.1016/0040-4020(95)00049-e] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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27
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Resolution and regioselective protection of glutamic acid analogues. I- resolution of diastereomeric α-boroxazolidone derivatives. ACTA ACUST UNITED AC 1994. [DOI: 10.1016/0957-4166(94)80036-7] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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28
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Pratviel-Sosa F, Acher F, Trigalo F, Blanot D, Azerad R, van Heijenoort J. Effect of various analogues of D-glutamic acid on the D-glutamate-adding enzyme from Escherichia coli. FEMS Microbiol Lett 1994; 115:223-8. [PMID: 7908001 DOI: 10.1111/j.1574-6968.1994.tb06642.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
Twenty-four analogues of D-glutamic acid were tested as substrates or inhibitors of the D-glutamate-adding enzyme from Escherichia coli. The best substrates were, in decreasing order of specific activity, D-erythro-4-methylglutamic acid, D-erythro-3-methylglutamic acid, DL-homocysteic acid, (+/-)-trans-1-amino-3-carboxy-cyclopentanecarboxylic acid and (+/-)-trans-1-amino-3-carboxy-cyclohexanecarboxylic acid. Among the different stereoisomers, only the D-erythro isomers for methylglutamic acids, and the trans isomers for the cyclic analogs, were substrates. Apart from the D-erythro-3- and 4-methylglutamic acids and DL-homocysteic acid, none of the examined compounds significantly inhibited the addition of radioactive D-glutamic acid to UDP-N-acetylmuramyl-L-alanine.
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Affiliation(s)
- F Pratviel-Sosa
- Enveloppes Bactériennes et Peptides, URA 1131 du CNRS, Université de Paris-Sud, Orsay, France
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Kotha S, Kuki A. Synthesis of a New Rigid Quinone-Amino Acid and Diels-Alder Extension to Higher Quinones. CHEM LETT 1993. [DOI: 10.1246/cl.1993.299] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Trigalo F, Molliex C, Champion B, Azerad R. Synthesis of two cyclic analogs of glutamic acid: cis- and trans-pyrrolidine-2,4-dicarboxylic acids. Tetrahedron Lett 1991. [DOI: 10.1016/0040-4039(91)80684-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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33
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Acher F, Azerad R. Synthesis of diastereoisomeric peptides incorporating cycloglutamic acids. Substrate specificity of vitamin K-dependent carboxylation. INTERNATIONAL JOURNAL OF PEPTIDE AND PROTEIN RESEARCH 1991; 37:210-9. [PMID: 1678382 DOI: 10.1111/j.1399-3011.1991.tb00272.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Tripeptides Boc-X-Glu-Val where X is alpha-methyl glutamic acid or various cyclic analogues of glutamic acid, such as 1-amino-1,3-dicarboxycyclohexane (cis or trans-CHGA) or -cyclopentane (cis or trans-CPGA) have been synthesized. Methods for the selective protection, activation, and coupling of such unnatural amino acids are described. The peptides, which are potential competitive inhibitors of the vitamin K-dependent carboxylation, have been preliminarily tested with the rat liver microsomal carboxylase and found to be effective substrates of the carboxylation reaction.
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Affiliation(s)
- F Acher
- Laboratory of Pharmacological and Toxicological Chemistry and Biochemistry, URA 400 CNRS, University René Descartes, Paris, France
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34
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Trigalo F, Acher F, Azerad R. Synthesis and resolution of dhcga, a new conformationally rigid 3,4-dehydroglutamic acid analogue. Tetrahedron 1990. [DOI: 10.1016/s0040-4020(01)87827-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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