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Koblischek P, Brückner R. Syntheses of 6,7‐Benzotropolone by Using Ring‐Closing Metathesis Variants Obviating a Strongly Acidic Hydrolysis Thereafter. European J Org Chem 2022. [DOI: 10.1002/ejoc.202101070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Philip Koblischek
- Institut für Organische Chemie Albert-Ludwigs-Universität Albertstraße 21 79104 Freiburg Germany
| | - Reinhard Brückner
- Institut für Organische Chemie Albert-Ludwigs-Universität Albertstraße 21 79104 Freiburg Germany
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2
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Králová P, Ručilová V, Soural M. Polymer-Supported Syntheses of Heterocycles Bearing Oxazine and Thiazine Scaffolds. ACS COMBINATORIAL SCIENCE 2018; 20:529-543. [PMID: 30040392 DOI: 10.1021/acscombsci.8b00076] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
In this review, we summarize synthetic approaches to preparing single or fused oxazine and thiazine derivatives using solid-phase synthesis (SPS). The literature survey revealed that diverse compounds bearing variously functionalized 1,2-oxazine, 1,3-oxazine, or 1,4-oxazine scaffolds and the corresponding thiazines are accessible by SPS. The latest contributions involving the stereoselective polymer-supported syntheses of morpholines indicate that the field is continuing to expand.
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Affiliation(s)
- Petra Králová
- Department of Organic Chemistry, Faculty of Science, Palacký University, 17. listopadu 12, 771 46 Olomouc, Czech Republic
| | - Veronika Ručilová
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacký University, Hněvotínská 5, 779 00, Olomouc, Czech Republic
| | - Miroslav Soural
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacký University, Hněvotínská 5, 779 00, Olomouc, Czech Republic
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3
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Traceless Solid-Phase Synthesis of [6,7,8 + 5,6,7]-Fused Molecular Frameworks. Molecules 2018; 23:molecules23051090. [PMID: 29734722 PMCID: PMC6102595 DOI: 10.3390/molecules23051090] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2018] [Revised: 04/30/2018] [Accepted: 05/02/2018] [Indexed: 11/17/2022] Open
Abstract
We report two synthetic strategies for traceless solid-phase synthesis of molecular scaffolds comprising 6- to 8-membered rings fused with 5- to 7-membered rings. Traceless synthesis facilitated preparation of target molecules without any trace of polymer-supported linkers. The cyclization proceeded via acid-mediated tandem N-acylium ion formation followed by the nucleophilic addition of O- and C-nucleophiles. The presented synthetic strategy enabled, through the use of simple building blocks without any conformational preferences, the evaluation of the predisposition of different combinations of ring sizes to form fused ring molecular scaffolds. Compounds with any combination of [6,7 + 5,6,7] ring sizes were accessible with excellent crude purity. The 8-membered cyclic iminium was successfully fused only with the 5-membered cycle and larger fused ring systems were not formed, probably due to their instability.
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Kakish J, Allen KJH, Harkness TA, Krol ES, Lee JS. Novel Dimer Compounds That Bind α-Synuclein Can Rescue Cell Growth in a Yeast Model Overexpressing α-Synuclein. A Possible Prevention Strategy for Parkinson's Disease. ACS Chem Neurosci 2016; 7:1671-1680. [PMID: 27673434 DOI: 10.1021/acschemneuro.6b00209] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
The misfolding of α-synuclein is a critical event in the death of dopaminergic neurons and the progression of Parkinson's disease. Previously, it was suggested that drugs, which bind to α-synuclein and form a loop structure between the N- and C-termini, tend to be neuroprotective, whereas others, which cause a more compact structure, tend to be neurotoxic. To improve the binding to α-synuclein, eight novel compounds were synthesized from a caffeine scaffold attached to (R,S)-1-aminoindan, (R,S)-nicotine, and metformin, and their binding to α-synuclein determined through nanopore analysis and isothermal titration calorimetry. The ability of the dimers to interact with α-synuclein in a cell system was assayed in a yeast model of PD which expresses an AS-GFP (α-synuclein-Green Fluorescent Protein) construct under the control of a galactose promoter. In 5 mM galactose this yeast strain will not grow and large cytoplasmic foci are observed by fluorescent microscopy. Two of the dimers, C8-6-I and C8-6-N, at a concentration of 0.1 μM allowed the yeast to grow normally in 5 mM galactose and the AS-GFP became localized to the periphery of the cell. Both dimers were superior when compared to the monomeric compounds. The presence of the dimers also caused the disappearance of preformed cytoplasmic foci. Nanopore analysis of C8-6-I and C8-6-N were consistent with simultaneous binding to both the N- and C-terminus of α-synuclein but the binding constants were only 105 M-1.
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Affiliation(s)
- Joe Kakish
- Department of Biochemistry, ‡Drug Discovery and Development Research Group, College
of Pharmacy and Nutrition, and §Department of Anatomy and Cell Biology, University of Saskatchewan, 107 Wiggins Road, Saskatoon, Canada S7N 0W0
| | - Kevin J. H. Allen
- Department of Biochemistry, ‡Drug Discovery and Development Research Group, College
of Pharmacy and Nutrition, and §Department of Anatomy and Cell Biology, University of Saskatchewan, 107 Wiggins Road, Saskatoon, Canada S7N 0W0
| | - Troy A. Harkness
- Department of Biochemistry, ‡Drug Discovery and Development Research Group, College
of Pharmacy and Nutrition, and §Department of Anatomy and Cell Biology, University of Saskatchewan, 107 Wiggins Road, Saskatoon, Canada S7N 0W0
| | - Ed S. Krol
- Department of Biochemistry, ‡Drug Discovery and Development Research Group, College
of Pharmacy and Nutrition, and §Department of Anatomy and Cell Biology, University of Saskatchewan, 107 Wiggins Road, Saskatoon, Canada S7N 0W0
| | - Jeremy S. Lee
- Department of Biochemistry, ‡Drug Discovery and Development Research Group, College
of Pharmacy and Nutrition, and §Department of Anatomy and Cell Biology, University of Saskatchewan, 107 Wiggins Road, Saskatoon, Canada S7N 0W0
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Schütznerová E, Verdía P, Krchňák V. Fused Ring Molecular Scaffold with 3D Architecture for Constrained Peptidomimetics: Polymer-Supported Stereoselective Synthesis of Tetrahydrobenzo[e]pyrazino[2,1-c][1,2,4]thiadiazinone 6,6-dioxide via N-Acyl Iminiums. ACS COMBINATORIAL SCIENCE 2016; 18:655-659. [PMID: 27623208 DOI: 10.1021/acscombsci.6b00126] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
3,4,4a,5-Tetrahydrobenzo[e]pyrazino[2,1-c][1,2,4]thiadiazin-1(2H)-one 6,6-dioxides, molecular scaffolds with 3D architecture, were synthesized on solid supports via tandem N-acyl iminium ion cyclization followed by nucleophilic addition. The modular synthesis proceeded under mild conditions using commercially available building blocks and provided crude products with respectable purity. The synthesized compounds are applicable as fused nitrogenous heterocyclic compounds in drug discovery and as constrained peptidomimetics incorporated into a peptide backbone.
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Affiliation(s)
- Eva Schütznerová
- Department
of Organic Chemistry, Institute of Molecular and Translational Medicine,
Faculty of Science, Palacký University, 17. Listopadu 12, 771 46 Olomouc, Czech Republic
| | - Pedro Verdía
- Department
of Organic Chemistry, Institute of Molecular and Translational Medicine,
Faculty of Science, Palacký University, 17. Listopadu 12, 771 46 Olomouc, Czech Republic
| | - Viktor Krchňák
- Department
of Organic Chemistry, Institute of Molecular and Translational Medicine,
Faculty of Science, Palacký University, 17. Listopadu 12, 771 46 Olomouc, Czech Republic
- Department
of Chemistry and Biochemistry, 251 Nieuwland Science Center, University of Notre Dame, Notre
Dame, Indiana 46556, United States
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Komnatnyy VV, Taveras KM, Nandurkar NS, Le Quement ST, Givskov M, Nielsen TE. Synthesis of Substituted γ- and δ-Lactams through Mannich-Type Reactions of Solid-SupportedN-Acyliminium Ions. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500054] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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8
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Petersen R, Le Quement ST, Nielsen TE. Synthesis of a natural product-like compound collection through oxidative cleavage and cyclization of linear peptides. Angew Chem Int Ed Engl 2014; 53:11778-82. [PMID: 25214457 DOI: 10.1002/anie.201405747] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2014] [Indexed: 11/08/2022]
Abstract
Massive efforts in molecular library synthesis have strived for the development of synthesis methodology which systematically delivers natural product-like compounds of high spatial complexity. Herein, we present a conceptually simple approach that builds on the power of solid-phase peptide synthesis to assemble precursor peptides (oligomers) designed to undergo oxidative cascade reactions. By harnessing the structural side-chain diversity and inherent stereochemical features offered by readily available amino acids (monomers), a proof-of-concept collection of 54 skeletally and stereochemically diverse compounds was generated, and selected compounds were elaborated into isoform-selective metalloprotease inhibitors.
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Affiliation(s)
- Rico Petersen
- Department of Chemistry, Technical University of Denmark, Kemitorvet, Building 201, 2800 Kgs. Lyngby (Denmark)
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9
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Petersen R, Le Quement ST, Nielsen TE. Synthesis of a Natural Product-Like Compound Collection through Oxidative Cleavage and Cyclization of Linear Peptides. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201405747] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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10
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Ishoey M, Nielsen TE. Synthesis of Heterocycles through Transition Metal-Catalyzed Isomerization Reactions. Chemistry 2014; 20:8832-40. [DOI: 10.1002/chem.201400216] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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11
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Petersen R, Jensen JF, Nielsen TE. An Improved Protocol for the Synthesis of 1-(Mesitylenesulfonyl)-3-nitro-1,2,4-triazole (MSNT). ORG PREP PROCED INT 2014. [DOI: 10.1080/00304948.2014.903145] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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12
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Min JY, Kim G. Conversion of oxazolidinediones to isoindoloisoquinolinones via intramolecular Friedel–Crafts reaction. J Org Chem 2014; 79:1444-8. [PMID: 24400908 DOI: 10.1021/jo402345q] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Treatment of oxazolidinediones with TiCl4 in CH2Cl2 resulted in conversion to isoindoloisoquinolinones via intramolecular Friedel–Crafts reaction with extrusion of CO2 in the transformation. The alkaloid nuevamine has been synthesized under these conditions in a regiospecific manner.
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Case studies of the synthesis of bioactive cyclodepsipeptide natural products. Molecules 2013; 18:1337-67. [PMID: 23348990 PMCID: PMC6270203 DOI: 10.3390/molecules18021337] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2012] [Revised: 01/14/2013] [Accepted: 01/16/2013] [Indexed: 11/29/2022] Open
Abstract
Cyclodepsipeptide natural products often display intriguing biological activities that along with their complex molecular scaffolds, makes them interesting targets for chemical synthesis. Although cyclodepsipeptides feature highly diverse chemical structures, their synthesis is often associated with similar synthetic challenges such as the establishment of a suitable macrocyclization methodology. This review therefore compiles case studies of synthetic approaches to different bioactive cyclodepsipeptide natural products, thereby illustrating obstacles of cyclodepsipeptide synthesis as well as their overcomings.
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Komnatnyy VV, Givskov M, Nielsen TE. Solid-phase synthesis of structurally diverse heterocycles by an amide-ketone condensation/N-acyliminium pictet-spengler sequence. Chemistry 2012; 18:16793-800. [PMID: 23132763 DOI: 10.1002/chem.201202745] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2012] [Indexed: 11/12/2022]
Abstract
An efficient approach for the solid-phase synthesis of structurally diverse heterocyclic compounds is presented. Under acidic reaction conditions, peptidic levulinamides undergo intramolecular ketone-amide condensation reactions to form cyclic N-acyliminium intermediates. In the presence of a tethered nucleophile, a second cyclization reaction results in the formation of a fused bicyclic ring system. The scope of the methodology was demonstrated by several combinations of substituted ketones and nucleophiles, the latter conveniently originating from amino acids with functionalized side chains, such as tryptophan, substituted phenylalanines, and cysteine. The cyclization sequence provides diastereomerically pure products in high yields. In one extension of the methodology, the resulting relative stereochemistry of the products enables the formation of bridged ring systems by a unique cyclative release mechanism.
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Affiliation(s)
- Vitaly V Komnatnyy
- Department of Chemistry, Technical University of Denmark, Lyngby, Denmark
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Stolze SC, Meltzer M, Ehrmann M, Kaiser M. Development of a Solid-Phase Approach to the Natural Product Class of Ahp-Containing Cyclodepsipeptides. European J Org Chem 2012. [DOI: 10.1002/ejoc.201101757] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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17
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Nandurkar NS, Petersen R, Qvortrup K, Komnatnyy VV, Taveras KM, Le Quement ST, Frauenlob R, Givskov M, Nielsen TE. A convenient procedure for the solid-phase synthesis of hydroxamic acids on PEGA resins. Tetrahedron Lett 2011. [DOI: 10.1016/j.tetlet.2011.10.103] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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18
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Stöckigt J, Antonchick AP, Wu F, Waldmann H. Die Pictet-Spengler-Reaktion in der Natur und der organischen Chemie. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201008071] [Citation(s) in RCA: 137] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Stöckigt J, Antonchick AP, Wu F, Waldmann H. The Pictet-Spengler reaction in nature and in organic chemistry. Angew Chem Int Ed Engl 2011; 50:8538-64. [PMID: 21830283 DOI: 10.1002/anie.201008071] [Citation(s) in RCA: 532] [Impact Index Per Article: 40.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2010] [Indexed: 01/18/2023]
Abstract
Alkaloids are an important class of natural products that are widely distributed in nature and produced by a large variety of organisms. They have a wide spectrum of biological activity and for many years were used in folk medicine. These days, alkaloids also have numerous applications in medicine as therapeutic agents. The importance of these natural products in inspiring drug discovery programs is proven and, therefore, their continued synthesis is of significant interest. The condensation discovered by Pictet and Spengler is the most important method for the synthesis of alkaloid scaffolds. The power of this synthesis method has been convincingly proven in the construction of stereochemicaly and structurally complex alkaloids.
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Affiliation(s)
- Joachim Stöckigt
- Institute of Materia Medica, College of Pharmaceutical Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310058, China.
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Pin F, Comesse S, Daïch A. Intramolecular N-aza-amidoalkylation in association with Witkop–Winterfeldt oxidation as the key step to synthesize Luotonin-A analogues. Tetrahedron 2011. [DOI: 10.1016/j.tet.2011.05.120] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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21
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Selvakumar J, Ramanathan CR. Brønsted acid assisted activation of imide carbonyl group: regioselective synthesis of isoindoloisoquinolinone alkaloid (±)-nuevamine. Org Biomol Chem 2011; 9:7643-6. [DOI: 10.1039/c1ob06349a] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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22
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Stolze SC, Meltzer M, Ehrmann M, Kaiser M. Solid phase total synthesis of the 3-amino-6-hydroxy-2-piperidone (Ahp) cyclodepsipeptide and protease inhibitor Symplocamide A. Chem Commun (Camb) 2010; 46:8857-9. [PMID: 20967347 DOI: 10.1039/c0cc02889d] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The solid phase total synthesis of the marine cyanobacterial Ahp-cyclodepsipeptide Symplocamide A is reported as a model for a general route for the synthesis of tailor-made non-covalent serine protease inhibitors.
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Affiliation(s)
- Sara C Stolze
- Chemical Genomics Centre der Max-Planck-Gesellschaft, Otto-Hahn-Str. 15, 44227 Dortmund, Germany
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23
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Le Quement ST, Petersen R, Meldal M, Nielsen TE. N-acyliminium intermediates in solid-phase synthesis. Biopolymers 2010; 94:242-56. [PMID: 20225296 DOI: 10.1002/bip.21358] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
N-Acyliminium ions are powerful intermediates in synthetic organic chemistry. Examples of their use are numerous in solution-phase synthesis, but there are unmerited few reports on these highly reactive electrophiles in solid-phase synthesis. The present review covers the literature to date and illustrates the methods used to generate N-acyliminium intermediates on solid support and their further elaboration to a range of pharmacologically interesting peptidomimetics, heterocycles, and other small molecules.
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Affiliation(s)
- Sebastian T Le Quement
- Department of Chemistry, Technical University of Denmark, Kemitorvet, Building 201, DK-2800 Kgs. Lyngby, Denmark
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24
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Mar Kayser M, de Paz JL, Nieto PM. Polymer-Supported Synthesis of Oligosaccharides Using a Diisopropylsiloxane Linker and Trichloroacetimidate Donors. European J Org Chem 2010. [DOI: 10.1002/ejoc.200901445] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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25
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Meldal M, Tornøe CW, Nielsen TE, Diness F, Le Quement ST, Christensen CA, Jensen JF, Worm-Leonhard K, Groth T, Bouakaz L, Wu B, Hagel G, Keinicke L. Ralph F. Hirschmann award address 2009: Merger of organic chemistry with peptide diversity. Biopolymers 2010; 94:161-82. [DOI: 10.1002/bip.21344] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Airiau E, Girard N, Mann A, Salvadori J, Taddei M. Four-Component Reactions toward Fused Heterocyclic Rings. Org Lett 2009; 11:5314-7. [DOI: 10.1021/ol902279m] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Etienne Airiau
- Faculté de Pharmacie, UMR 7200, CNRS-Université de Strasbourg, Laboratoire d’Innovation Thérapeutique, 74 route du Rhin, F-67401 Illkirch, France, and Dipartimento Farmaco Chimico Tecnologico, Università degli Studi di Siena, Via A. Moro 2, 53100 Siena, Italy
| | - Nicolas Girard
- Faculté de Pharmacie, UMR 7200, CNRS-Université de Strasbourg, Laboratoire d’Innovation Thérapeutique, 74 route du Rhin, F-67401 Illkirch, France, and Dipartimento Farmaco Chimico Tecnologico, Università degli Studi di Siena, Via A. Moro 2, 53100 Siena, Italy
| | - André Mann
- Faculté de Pharmacie, UMR 7200, CNRS-Université de Strasbourg, Laboratoire d’Innovation Thérapeutique, 74 route du Rhin, F-67401 Illkirch, France, and Dipartimento Farmaco Chimico Tecnologico, Università degli Studi di Siena, Via A. Moro 2, 53100 Siena, Italy
| | - Jessica Salvadori
- Faculté de Pharmacie, UMR 7200, CNRS-Université de Strasbourg, Laboratoire d’Innovation Thérapeutique, 74 route du Rhin, F-67401 Illkirch, France, and Dipartimento Farmaco Chimico Tecnologico, Università degli Studi di Siena, Via A. Moro 2, 53100 Siena, Italy
| | - Maurizio Taddei
- Faculté de Pharmacie, UMR 7200, CNRS-Université de Strasbourg, Laboratoire d’Innovation Thérapeutique, 74 route du Rhin, F-67401 Illkirch, France, and Dipartimento Farmaco Chimico Tecnologico, Università degli Studi di Siena, Via A. Moro 2, 53100 Siena, Italy
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Tang Y, Fettinger JC, Shaw JT. One-Step Synthesis of Complex Nitrogen Heterocycles from Imines and Alkyl-Substituted Maleic Anhydrides. Org Lett 2009; 11:3802-5. [DOI: 10.1021/ol901018k] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yuchen Tang
- Department of Chemistry, University of California, One Shields Avenue, Davis, California 95616
| | - James C. Fettinger
- Department of Chemistry, University of California, One Shields Avenue, Davis, California 95616
| | - Jared T. Shaw
- Department of Chemistry, University of California, One Shields Avenue, Davis, California 95616
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28
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Boomer JA, Qualls MM, Inerowicz HD, Haynes RH, Patri VS, Kim JM, Thompson DH. Cytoplasmic delivery of liposomal contents mediated by an acid-labile cholesterol-vinyl ether-PEG conjugate. Bioconjug Chem 2009; 20:47-59. [PMID: 19072698 DOI: 10.1021/bc800239b] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
An acid-cleavable PEG lipid, 1'-(4'-cholesteryloxy-3'-butenyl)-omega-methoxy-polyethylene[112] glycolate (CVEP), has been developed that produces stable liposomes when dispersed as a minor component (0.5-5 mol %) in 1,2-dioleoyl-sn-glycero-3-phosphoethanolamine (DOPE). Cleavage of CVEP at mildly acidic pHs results in dePEGylation of the latently fusogenic DOPE liposomes, thereby triggering the onset of content release. This paper describes the synthesis of CVEP via a six-step sequence starting from the readily available precursors 1,4-butanediol, cholesterol, and mPEG acid. The hydrolysis rates and release kinetics from CVEP/DOPE liposome dispersions as a function of CVEP loading, as well as the cryogenic transmission electron microscopy and pH-dependent monolayer properties of 9:91 CVEP/DOPE mixtures, also are reported. When folate receptor-positive KB cells were exposed to calcein-loaded 5:95 CVEP/DOPE liposomes containing 0.1 mol % folate-modified 1,2-distearoyl-sn-glycero-3-phosphoethanolamine-N-polyethylene[76] glycolamide (folate-PEG-DSPE), delivery of the calcein cargo to the cytoplasm of the cells was observed as determined by fluorescence microscopy and flow cytometry. Fluorescence resonance energy transfer analysis of lipid mixing in these cells was consistent with membrane-membrane fusion between the liposome and endosomal membranes.
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Affiliation(s)
- Jeremy A Boomer
- Department of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, Indiana 47907-1393, USA
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29
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Dolle RE, Bourdonnec BL, Goodman AJ, Morales GA, Thomas CJ, Zhang W. Comprehensive Survey of Chemical Libraries for Drug Discovery and Chemical Biology: 2007. ACTA ACUST UNITED AC 2008; 10:753-802. [PMID: 18991466 DOI: 10.1021/cc800119z] [Citation(s) in RCA: 92] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Roland E. Dolle
- Adolor Corporation, 700 Pennsylvania Drive, Exton, Pennsylvania 19341, Semafore Pharmaceuticals Inc., 8496 Georgetown Road, Indianapolis, Indiana 46268, NIH Chemical Genomics Center, National Human Genome Research Institute, National Institutes of Health, 9800 Medical Center Drive, Rockville, Maryland 20850, and Department of Chemistry, University of Massachusetts, 100 Morrissey Boulevard, Boston, Massachusetts 02125
| | - Bertrand Le Bourdonnec
- Adolor Corporation, 700 Pennsylvania Drive, Exton, Pennsylvania 19341, Semafore Pharmaceuticals Inc., 8496 Georgetown Road, Indianapolis, Indiana 46268, NIH Chemical Genomics Center, National Human Genome Research Institute, National Institutes of Health, 9800 Medical Center Drive, Rockville, Maryland 20850, and Department of Chemistry, University of Massachusetts, 100 Morrissey Boulevard, Boston, Massachusetts 02125
| | - Allan J. Goodman
- Adolor Corporation, 700 Pennsylvania Drive, Exton, Pennsylvania 19341, Semafore Pharmaceuticals Inc., 8496 Georgetown Road, Indianapolis, Indiana 46268, NIH Chemical Genomics Center, National Human Genome Research Institute, National Institutes of Health, 9800 Medical Center Drive, Rockville, Maryland 20850, and Department of Chemistry, University of Massachusetts, 100 Morrissey Boulevard, Boston, Massachusetts 02125
| | - Guillermo A. Morales
- Adolor Corporation, 700 Pennsylvania Drive, Exton, Pennsylvania 19341, Semafore Pharmaceuticals Inc., 8496 Georgetown Road, Indianapolis, Indiana 46268, NIH Chemical Genomics Center, National Human Genome Research Institute, National Institutes of Health, 9800 Medical Center Drive, Rockville, Maryland 20850, and Department of Chemistry, University of Massachusetts, 100 Morrissey Boulevard, Boston, Massachusetts 02125
| | - Craig J. Thomas
- Adolor Corporation, 700 Pennsylvania Drive, Exton, Pennsylvania 19341, Semafore Pharmaceuticals Inc., 8496 Georgetown Road, Indianapolis, Indiana 46268, NIH Chemical Genomics Center, National Human Genome Research Institute, National Institutes of Health, 9800 Medical Center Drive, Rockville, Maryland 20850, and Department of Chemistry, University of Massachusetts, 100 Morrissey Boulevard, Boston, Massachusetts 02125
| | - Wei Zhang
- Adolor Corporation, 700 Pennsylvania Drive, Exton, Pennsylvania 19341, Semafore Pharmaceuticals Inc., 8496 Georgetown Road, Indianapolis, Indiana 46268, NIH Chemical Genomics Center, National Human Genome Research Institute, National Institutes of Health, 9800 Medical Center Drive, Rockville, Maryland 20850, and Department of Chemistry, University of Massachusetts, 100 Morrissey Boulevard, Boston, Massachusetts 02125
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30
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Le Quement ST, Nielsen TE, Meldal M. Solid-Phase Synthesis of Aryl-Substituted Thienoindolizines: Sequential Pictet−Spengler, Bromination and Suzuki Cross-Coupling Reactions of Thiophenes. ACTA ACUST UNITED AC 2008; 10:447-55. [DOI: 10.1021/cc700199n] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | - Thomas E. Nielsen
- Carlsberg Laboratory, SPOCC Centre, Gamle Carlsberg Vej 10, DK-2500 Valby, Denmark
| | - Morten Meldal
- Carlsberg Laboratory, SPOCC Centre, Gamle Carlsberg Vej 10, DK-2500 Valby, Denmark
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