1
|
Abstract
![]()
A new approach to
polysubstituted spiropentanes is developed
through
a regio- and diastereoselective carbometalation of sp2-disubstituted
cyclopropenes. The control of selectivity originates from a combined syn-facial diastereoselective carbometalation with a regio-directed
addition. The regio-controlling element subsequently serves as a leaving
group in an intramolecular nucleophilic substitution. This method
allows the preparation of various polysubstituted spiropentanes with
up to five contiguous stereocenters.
Collapse
Affiliation(s)
- Yair Cohen
- Schulich Faculty of Chemistry, Technion - Israel Institute of Technology, Technion City, Haifa, 32000, Israel
| | - Dor Toledano
- Schulich Faculty of Chemistry, Technion - Israel Institute of Technology, Technion City, Haifa, 32000, Israel
| | - Ilan Marek
- Schulich Faculty of Chemistry, Technion - Israel Institute of Technology, Technion City, Haifa, 32000, Israel
| |
Collapse
|
2
|
Chernykh AV, Chernykh AV, Radchenko DS, Chheda PR, Rusanov EB, Grygorenko OO, Spies MA, Volochnyuk DM, Komarov IV. A stereochemical journey around spirocyclic glutamic acid analogs. Org Biomol Chem 2022; 20:3183-3200. [PMID: 35348173 PMCID: PMC10170626 DOI: 10.1039/d2ob00146b] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A practical divergent synthetic approach is reported for the library of regio- and stereoisomers of glutamic acid analogs built on the spiro[3.3]heptane scaffold. Formation of the spirocyclic scaffold was achieved starting from a common precursor - an O-silylated 2-(hydroxymethyl)cyclobutanone derivative. Its olefination required using the titanium-based Tebbe protocol since the standard Wittig reaction did not work with this particular substrate. The construction of the second cyclobutane ring of the spirocyclic system was achieved through either subsequent dichloroketene addition or Meinwald oxirane rearrangement as the key synthetic steps, depending on the substitution patterns in the target compounds (1,6- or 1,5-, respectively). Further modified Strecker reaction of the resulting racemic spirocyclic ketones with the Ellman's sulfinamide as a chiral auxiliary had low to moderate diastereoselectivity; nevertheless, all stereoisomers were isolated in pure form via chromatographic separation, and their absolute configuration was confirmed by X-ray crystallography. Members of the library were tested for the inhibitory activity against H. pylori glutamate racemase.
Collapse
Affiliation(s)
- Anton V Chernykh
- Enamine Ltd, Chervonotkatska Street 78, Kyiv 02094, Ukraine.,Taras Shevchenko National University of Kyiv, Volodymyrska Street 60, Kyiv 01601, Ukraine.
| | | | - Dmytro S Radchenko
- Enamine Ltd, Chervonotkatska Street 78, Kyiv 02094, Ukraine.,Taras Shevchenko National University of Kyiv, Volodymyrska Street 60, Kyiv 01601, Ukraine.
| | - Pratik Rajesh Chheda
- Division of Medicinal and Natural Products Chemistry, Department of Pharmaceutics and Experimental Therapeutics, College of Pharmacy, University of Iowa, Iowa City 52246, Iowa, USA
| | - Eduard B Rusanov
- Institute of Organic Chemistry, National Academy of Sciences of Ukraine, Murmanska Street 5, Kyiv 02660, Ukraine
| | - Oleksandr O Grygorenko
- Enamine Ltd, Chervonotkatska Street 78, Kyiv 02094, Ukraine.,Taras Shevchenko National University of Kyiv, Volodymyrska Street 60, Kyiv 01601, Ukraine.
| | - M Ashley Spies
- Division of Medicinal and Natural Products Chemistry, Department of Pharmaceutics and Experimental Therapeutics, College of Pharmacy, University of Iowa, Iowa City 52246, Iowa, USA.,Department of Biochemistry, Carver College of Medicine, University of Iowa, Iowa City 52246, Iowa, USA
| | - Dmitriy M Volochnyuk
- Enamine Ltd, Chervonotkatska Street 78, Kyiv 02094, Ukraine.,Taras Shevchenko National University of Kyiv, Volodymyrska Street 60, Kyiv 01601, Ukraine. .,Institute of Organic Chemistry, National Academy of Sciences of Ukraine, Murmanska Street 5, Kyiv 02660, Ukraine
| | - Igor V Komarov
- Enamine Ltd, Chervonotkatska Street 78, Kyiv 02094, Ukraine.,Taras Shevchenko National University of Kyiv, Volodymyrska Street 60, Kyiv 01601, Ukraine.
| |
Collapse
|
3
|
A short synthesis of both enantiomers of 2-aminobicyclo[3.2.0]heptane-2,7-dicarboxylic acid. Tetrahedron Lett 2021. [DOI: 10.1016/j.tetlet.2021.152912] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
4
|
N -Decyl- S -trityl-( R )-cysteine, a new chiral selector for “green” ligand-exchange chromatography applications. J Pharm Biomed Anal 2017; 144:31-40. [DOI: 10.1016/j.jpba.2017.02.009] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2016] [Revised: 01/15/2017] [Accepted: 02/04/2017] [Indexed: 11/21/2022]
|
5
|
Midura WH, Cypryk M, Rzewnicka A, Krysiak JA, Sieroń L. Stereoselective Cyclopropanation as a Way to 1-Aminocyclopropane-1-phosphonic Acids: Rationale for Phosphoryl Group Migration. European J Org Chem 2016. [DOI: 10.1002/ejoc.201600111] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
|
6
|
Lindeman S, Wallock NJ, Donaldson WA. Crystal structure of cis-2-(2-carb-oxy-cyclo-prop-yl)glycine (CCG-III) monohydrate. ACTA CRYSTALLOGRAPHICA SECTION E-CRYSTALLOGRAPHIC COMMUNICATIONS 2015; 71:844-6. [PMID: 26279882 PMCID: PMC4518997 DOI: 10.1107/s2056989015011500] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/12/2015] [Accepted: 06/14/2015] [Indexed: 12/02/2022]
Abstract
The title compound is an example of a ‘false conglomerate’ with two molecules of opposite handedness in the asymmetric unit. Each molecule exists as a zwitterion, with proton transfer from the amino acid carboxylic acid group to the amine group. In the crystal, the components are linked by N—H⋯O and O—H⋯O hydrogen bonds, generating (100) sheets. The title compound, C6H9NO4·H2O [systematic name: (αR,1R,2S)-rel-α-amino-2-carboxycyclopropaneacetic acid monohydrate], crystallizes with two organic molecules and two water molecules in the asymmetric unit. The space group is P21 and the organic molecules are enantiomers, thus this is an example of a ‘false conglomerate’ with two molecules of opposite handedness in the asymmetric unit (r.m.s. overlay fit = 0.056 Å for one molecule and its inverted partner). Each molecule exists as a zwitterion, with proton transfer from the amino acid carboxylic acid group to the amine group. In the crystal, the components are linked by N—H⋯O and O—H⋯O hydrogen bonds, generating (100) sheets. Conformationally restricted glutamate analogs are of interest due to their selective activation of different glutamate receptors, and the naturally occurring (+)-CCG-III is an inhibitor of glutamate uptake and the key geometrical parameters are discussed.
Collapse
Affiliation(s)
- Sergey Lindeman
- Department of Chemistry, Marquette University, PO Box 1881, Milwaukee, WI 53201-1881, USA
| | - Nathaniel J Wallock
- Department of Chemistry, Marquette University, PO Box 1881, Milwaukee, WI 53201-1881, USA
| | - William A Donaldson
- Department of Chemistry, Marquette University, PO Box 1881, Milwaukee, WI 53201-1881, USA
| |
Collapse
|
7
|
Nambu H, Fukumoto M, Hirota W, Ono N, Yakura T. An efficient synthesis of cycloalkane-1,3-dione-2-spirocyclopropanes from 1,3-cycloalkanediones using (1-aryl-2-bromoethyl)-dimethylsulfonium bromides: application to a one-pot synthesis of tetrahydroindol-4(5H)-one. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2015.05.069] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
|
8
|
Bechi B, Amantini D, Tintori C, Botta M, Fabio RD. Stereocontrolled synthesis of 5-azaspiro[2.3]hexane derivatives as conformationally "frozen" analogues of L-glutamic acid. Beilstein J Org Chem 2014; 10:1114-20. [PMID: 24991261 PMCID: PMC4077356 DOI: 10.3762/bjoc.10.110] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2014] [Accepted: 04/04/2014] [Indexed: 12/02/2022] Open
Abstract
Several strategies aimed to “freeze” natural amino acids into more constrained analogues have been developed with the aim of enhancing in vitro potency/selectivity and, more in general, drugability properties. The case of L-glutamic acid (L-Glu, 1) is of particular importance since it is the primary excitatory neurotransmitter in the mammalian central nervous system (CNS) and plays a critical role in a wide range of disorders like schizophrenia, depression, neurodegenerative diseases such as Parkinson’s and Alzheimer’s and in the identification of new potent and selective ligands of ionotropic and metabotropic glutamate receptors (GluRs). To this aim, bicycle compound Ib was designed and synthesised from D-serine as novel [2.3]-spiro analogue of L-Glu. This frozen amino acid derivative was designed to further limit the rotation around the C3–C4 bond present in the azetidine derivative Ia by incorporating an appropriate spiro moiety. The cyclopropyl moiety was introduced by a diastereoselective rhodium catalyzed cyclopropanation reaction.
Collapse
Affiliation(s)
- Beatrice Bechi
- Università degli Studi di Siena, Dipartimento Farmaco Chimico Tecnologico, Via A. Moro 2, 53100, Siena, Italy ; Present address: Manchester Institute of Biotechnology, School of Chemistry, University of Manchester, Oxford Road, Manchester, M13 9PL, UK
| | - David Amantini
- Neurosciences Centre of Excellence for Drug Discovery, GlaxoSmithKline Medicines Research Centre, Via A. Fleming 4, 37135, Verona, Italy ; Present address: Galapagos SASU, 102 avenue Gaston Roussel, 93230 Romainville, France
| | - Cristina Tintori
- Università degli Studi di Siena, Dipartimento Farmaco Chimico Tecnologico, Via A. Moro 2, 53100, Siena, Italy
| | - Maurizio Botta
- Università degli Studi di Siena, Dipartimento Farmaco Chimico Tecnologico, Via A. Moro 2, 53100, Siena, Italy
| | - Romano di Fabio
- Neurosciences Centre of Excellence for Drug Discovery, GlaxoSmithKline Medicines Research Centre, Via A. Fleming 4, 37135, Verona, Italy ; Present address: Drug Design and Discovery, Aptuit S.r.l., Via A. Fleming 4, 37135 Verona, Italy
| |
Collapse
|
9
|
|
10
|
Midura WH, Rzewnicka A. Asymmetric synthesis of (R)-[2,2-]-1-aminocyclopropane-1-phosphonic acid (ACPP derivative) conformationally constrained ACC analogue using a chiral sulfinyl auxiliary. ACTA ACUST UNITED AC 2013. [DOI: 10.1016/j.tetasy.2013.05.024] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
11
|
Goulioukina NS, Makukhin NN, Beletskaya IP. 1,3-Dipolar cycloaddition of diazoalkanes onto dimethyl 1-(formylamino)ethylenephosphonate: a new route to 1-aminocyclopropanephosphonic acids and 3-phosphorylated pyrazoles. Tetrahedron 2011. [DOI: 10.1016/j.tet.2011.10.010] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
|
12
|
Gulyukina NS, Makukhin NN, Beletskaya IP. Synthesis methods of (1-aminocyclopropyl)phosphonic acids. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2011. [DOI: 10.1134/s1070428011050010] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
13
|
Natalini B, Sardella R, Giacchè N, Palmiotto S, Camaioni E, Marinozzi M, Macchiarulo A, Pellicciari R. Chiral ligand-exchange separation and resolution of extremely rigid glutamate analogs: 1-aminospiro[2.2]pentyl-1,4-dicarboxylic acids. Anal Bioanal Chem 2010; 397:1997-2011. [DOI: 10.1007/s00216-010-3669-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2010] [Revised: 03/17/2010] [Accepted: 03/21/2010] [Indexed: 11/30/2022]
|
14
|
Synthesis of 2-azaspiro[3.3]heptane-derived amino acids: ornitine and GABA analogues. Amino Acids 2010; 39:515-21. [DOI: 10.1007/s00726-009-0467-9] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2009] [Accepted: 12/24/2009] [Indexed: 11/26/2022]
|
15
|
Lu T, Hayashi R, Hsung RP, DeKrover KA, Lohse AG, Song Z, Tang Y. Synthesis of amido-spiro[2.2]pentanes via Simmons-Smith cyclopropanation of allenamides. Org Biomol Chem 2009; 7:3331-7. [PMID: 19641792 PMCID: PMC2829688 DOI: 10.1039/b908205k] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A detailed account of Simmons-Smith cyclopropanations of allenamides en route to amido-spiro[2.2]pentanes is described here. While the diastereoselectivity was low when using unsubstituted allenamides, the reaction is overall efficient and general, representing the most direct synthesis of both chemically and biologically interesting amido-spiro[2.2]pentane systems. With alpha-substituted allenamides, while the diastereoselectivity could be improved significantly based on a series of conformational analyses, both mono- and bis-cyclopropanation products were observed. Consequently, several structurally intriguing amido-methylene cyclopropanes could also be prepared.
Collapse
Affiliation(s)
- Ting Lu
- Division of Pharmaceutical Sciences and Department of Chemistry, Rennebohm Hall, 777 Highland Avenue University of Wisconsin, Madison, WI 53705-2222
| | - Ryuji Hayashi
- Division of Pharmaceutical Sciences and Department of Chemistry, Rennebohm Hall, 777 Highland Avenue University of Wisconsin, Madison, WI 53705-2222
| | - Richard P. Hsung
- Division of Pharmaceutical Sciences and Department of Chemistry, Rennebohm Hall, 777 Highland Avenue University of Wisconsin, Madison, WI 53705-2222
| | - Kyle A. DeKrover
- Division of Pharmaceutical Sciences and Department of Chemistry, Rennebohm Hall, 777 Highland Avenue University of Wisconsin, Madison, WI 53705-2222
| | - Andrew G. Lohse
- Division of Pharmaceutical Sciences and Department of Chemistry, Rennebohm Hall, 777 Highland Avenue University of Wisconsin, Madison, WI 53705-2222
| | - Zhenlei Song
- Division of Pharmaceutical Sciences and Department of Chemistry, Rennebohm Hall, 777 Highland Avenue University of Wisconsin, Madison, WI 53705-2222
| | - Yu Tang
- Division of Pharmaceutical Sciences and Department of Chemistry, Rennebohm Hall, 777 Highland Avenue University of Wisconsin, Madison, WI 53705-2222
| |
Collapse
|
16
|
Qu JP, Xu ZH, Zhou J, Cao CL, Sun XL, Dai LX, Tang Y. Ligand-Accelerated Asymmetric [1,2]-Stevens Rearrangment of Sulfur Ylides via Decomposition of Diazomalonates Catalyzed by Chiral Bisoxazoline/Copper Complex. Adv Synth Catal 2009. [DOI: 10.1002/adsc.200800536] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
17
|
Etayo P, Badorrey R, Díaz-de-Villegas MD, Gálvez JA. Asymmetric Homologation of Ketones. A New Entry to Orthogonally Protected (2R,4R)-Piperidine-2,4-dicarboxylic Acid. J Org Chem 2008; 73:8594-7. [DOI: 10.1021/jo801515k] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Pablo Etayo
- Departamento de Química Orgánica, Instituto de Ciencia de Materiales de Aragón, Instituto Universitario de Catálisis Homogénea, Universidad de Zaragoza-CSIC, E-50009 Zaragoza, Spain
| | - Ramón Badorrey
- Departamento de Química Orgánica, Instituto de Ciencia de Materiales de Aragón, Instituto Universitario de Catálisis Homogénea, Universidad de Zaragoza-CSIC, E-50009 Zaragoza, Spain
| | - María D. Díaz-de-Villegas
- Departamento de Química Orgánica, Instituto de Ciencia de Materiales de Aragón, Instituto Universitario de Catálisis Homogénea, Universidad de Zaragoza-CSIC, E-50009 Zaragoza, Spain
| | - José A. Gálvez
- Departamento de Química Orgánica, Instituto de Ciencia de Materiales de Aragón, Instituto Universitario de Catálisis Homogénea, Universidad de Zaragoza-CSIC, E-50009 Zaragoza, Spain
| |
Collapse
|
18
|
Chemagin AV, Yashin NV, Averina EB, Kuznetsova TS, Zefirov NS. New method for the synthesis of 1-aminospiro[2.2]pentane-1,4-dicarboxylic acid. DOKLADY CHEMISTRY 2008. [DOI: 10.1134/s0012500808040095] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
19
|
Brackmann F, de Meijere A. Natural Occurrence, Syntheses, and Applications of Cyclopropyl-Group-Containing α-Amino Acids. 1. 1-Aminocyclopropanecarboxylic Acid and Other 2,3-Methanoamino Acids. Chem Rev 2007; 107:4493-537. [DOI: 10.1021/cr078376j] [Citation(s) in RCA: 208] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Farina Brackmann
- Institut für Organische und Biomolekulare Chemie der Georg-August-Universität Göttingen, Tammannstrasse 2, 37077 Göttingen, Germany
| | - Armin de Meijere
- Institut für Organische und Biomolekulare Chemie der Georg-August-Universität Göttingen, Tammannstrasse 2, 37077 Göttingen, Germany
| |
Collapse
|
20
|
Matsuda T, Tsuboi T, Murakami M. Rhodium-Catalyzed Carbonylation of Spiropentanes. J Am Chem Soc 2007; 129:12596-7. [PMID: 17914819 DOI: 10.1021/ja0732779] [Citation(s) in RCA: 77] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Takanori Matsuda
- Department of Synthetic Chemistry and Biological Chemistry, Kyoto University, Katsura, Kyoto, Japan
| | | | | |
Collapse
|
21
|
Huang Y, Zhang YB, Chen ZC, Xu PF. A concise synthesis of (R)- and (S)-α-alkyl isoserines from d- and l-malic acids. ACTA ACUST UNITED AC 2006. [DOI: 10.1016/j.tetasy.2006.11.033] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
22
|
Abstract
In the present study, we describe the photochemical behaviour of 2-mesyloxy phenyl ketones 8 and 12 bearing a cyclopropane moiety in the side-chain. Irradiation of 8 and 12 leads to the corresponding benzoyl spiro[2.2]pentanes as a consequence of an initial gamma-H-shift, subsequent elimination of MsOH (accompanied by a spin-center shift) and cyclization of the resulting 1,3-diradicals. In contrast, a corresponding phenyl ketone without a mesyloxy group in the 2-position, and thus a potential reactant of the "classical" Norrish-Yang reaction, shows no photochemical reaction. By means of quantum chemical calculations we discovered that in the presence of a mesyloxy group the activation barrier for the photochemical gamma-H-shift is substantially decreased. Furthermore, a photoinduced skeletal rearrangement of benzoyl spiro[2.2]pentane to 2-cyclobutylidene-acetophenone could be observed. Compared to the common methods used to synthesize spiro[2.2]pentanes, the photochemical preparation of benzoyl spiro[2.2]pentane presented herein is the first example where a bond between the spiro atom and an adjacent atom is formed.
Collapse
Affiliation(s)
- Olaf Muehling
- Humboldt-Universität zu Berlin, Institut für Chemie, Brook-Taylor-Str., 2, 12489, Berlin, Germany
| | | |
Collapse
|
23
|
Grygorenko OO, Artamonov OS, Palamarchuk GV, Zubatyuk RI, Shishkin OV, Komarov IV. Stereoselective synthesis of 2,4-methanoproline homologues. ACTA ACUST UNITED AC 2006. [DOI: 10.1016/j.tetasy.2005.12.009] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
24
|
Synthesis of the constrained glutamate analogues (2S,1′R,2′R)- and (2S,1′S,2′S)-2-(2′-carboxycyclobutyl)glycines L-CBG-II and L-CBG-I by enzymatic transamination. Tetrahedron Lett 2006. [DOI: 10.1016/j.tetlet.2005.10.156] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
25
|
Bunch L, Nielsen B, Jensen AA, Bräuner-Osborne H. Rational Design and Enantioselective Synthesis of (1R,4S,5R,6S)-3-Azabicyclo[3.3.0]octane-4,6-dicarboxylic Acid A Novel Inhibitor at Human Glutamate Transporter Subtypes 1, 2, and 3. J Med Chem 2005; 49:172-8. [PMID: 16392801 DOI: 10.1021/jm0508336] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The natural product kainic acid is used as template for the rational design of a novel conformationally restricted (S)-glutamic acid (Glu) analogue, (1R,4S,5R,6S)-3-azabicyclo[3.3.0]octane-4,6-dicarboxylic acid (1a). The target structure 1a was synthesized from commercially available (S)-pyroglutaminol, in an enantioselective fashion, in 14 steps. Pharmacological characterization of 1a at human glutamate transporter subtypes 1, 2, and 3 yielded K(i) values of 127, 52, and 46 microM, respectively. Furthermore, binding studies at native ionotropic Glu (iGlu) receptors revealed low affinity for alpha-amino-3-hydroxy-5-methyl-4-isoxazolepropionate (AMPA)-preferring iGlu receptors (IC(50) > 100 microM), whereas affinities for the KAIN-preferring iGlu receptors and the N-methyl-d-aspartate (NMDA)-preferring group of iGlu receptors were in the low micromolar range (IC(50) = 14 and 2.9 microM, respectively). At metabotropic Glu receptors (mGluR), EC(50) values for 1a were >1000 microM for mGluR1 and 4, representing group I and III, respectively, and approximately 1000 microM (agonist) for mGluR2, representing group II.
Collapse
Affiliation(s)
- Lennart Bunch
- Department of Medicinal Chemistry, The Danish University of Pharmaceutical Sciences, Universitetsparken 2, DK-2100 Copenhagen, Denmark.
| | | | | | | |
Collapse
|
26
|
Díez D, García P, Marcos IS, Garrido N, Basabe P, Broughton HB, Urones JG. Chemistry of vinyl sulfones. Approach to novel conformationally restricted analogues of glutamic acid. Tetrahedron 2005. [DOI: 10.1016/j.tet.2004.10.072] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
27
|
Yashin NV, Averina EB, Gerdov SM, Kuznetsova TS, Zefirov NS. Catalytic cyclopropanation of methylenecyclobutanes using ethyl nitrodiazoacetate. Synthesis of spirohexane amino acids. Tetrahedron Lett 2003. [DOI: 10.1016/j.tetlet.2003.09.083] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
28
|
Bunch L, Liljefors T, Greenwood JR, Frydenvang K, Bräuner-Osborne H, Krogsgaard-Larsen P, Madsen U. Rational design, synthesis, and pharmacological evaluation of 2-azanorbornane-3-exo,5-endo-dicarboxylic acid: a novel conformationally restricted glutamic acid analogue. J Org Chem 2003; 68:1489-95. [PMID: 12585893 DOI: 10.1021/jo026509p] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The design and synthesis of conformationally restricted analogues of alpha-amino acids is an often used strategy in medicinal chemistry research. Here we present the rational design, synthesis, and pharmacological evaluation of 2-azanorbornane-3-exo,5-endo-dicarboxylic acid (1), a novel conformationally restricted (S)-glutamic acid (Glu) analogue intended as a mimic of the folded Glu conformation. The synthesis of 1 was completed in its racemic form in eight steps from commercially available starting materials. As a key step, the first facially selective hydroboration of a 5-methylidene[2.2.1]bicyclic intermediate was investigated. In this transformation, the catalytic methodology of Wilkinson's/catechol borane proved superior to stoichiometric borane or dialkyl borane reagents, in terms of higher diastereomeric excess and chemical yield. To our surprise (+/-)-1 did not show affinity in binding studies on native 2-amino-3-(3-hydroxy-5-methyl-4-isoxazolyl)propionic acid (AMPA) (IC(50) > 300 microM, [(3)H]AMPA) or kainic acid (IC(50) > 160 microM, [(3)H]kainic acid) receptors nor in binding studies on the cloned iGluR5,6 subtypes (IC(50) > 300 microM, [(3)H]kainic acid).
Collapse
Affiliation(s)
- Lennart Bunch
- Department of Medicinal Chemistry, The Royal Danish School of Pharmacy, Universitetsparken 2, DK-2100 Copenhagen, Denmark.
| | | | | | | | | | | | | |
Collapse
|