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Ramachandran PV, Choudhary S. One-Pot, Tandem Reductive Amination/Alkylation-Cycloamidation for Lactam Synthesis from Keto or Amino Acids. J Org Chem 2023; 88:15956-15963. [PMID: 37932035 DOI: 10.1021/acs.joc.3c01126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2023]
Abstract
Monotrifluoroacetoxyborane-amines, prepared by treating borane-amines with trifluoroacetic acid, have been shown to be efficient reagents for a one-pot, tandem reductive amination/alkylation-cycloamidation of keto or amino acids to achieve the synthesis of 5-aryl or 5-methyl pyrrolidin-2-ones and 6-aryl or 6-methyl piperidin-2-ones.
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Affiliation(s)
| | - Shivani Choudhary
- Department of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, Indiana 47907, United States
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2
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Exceptional efficiency of palladium nanoparticle catalyzed Heck cross-coupling in binary task specific ionic liquids. CR CHIM 2011. [DOI: 10.1016/j.crci.2010.07.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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3
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Lindner JP, Studer A. Carboaminoxylation as a Tool to Prepare Functionalized Polymeric Materials: Introduction of Biologically Important Residues by Metal-Free Radical CC Coupling Reactions. Chemistry 2011; 17:4090-4. [DOI: 10.1002/chem.201003163] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2010] [Indexed: 12/15/2022]
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4
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Fischer W, Calderón M, Schulz A, Andreou I, Weber M, Haag R. Dendritic polyglycerols with oligoamine shells show low toxicity and high siRNA transfection efficiency in vitro. Bioconjug Chem 2011; 21:1744-52. [PMID: 20857928 DOI: 10.1021/bc900459n] [Citation(s) in RCA: 67] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
RNA interference provides great opportunities for treating diseases from genetic disorders, infection, and cancer. The successful application of small interference RNA (siRNA) in cells with high transfection efficiency and low cytotoxicity is, however, a major challenge in gene-mediated therapy. Several pH-responsive core shell architectures have been designed that contain a nitrogen shell motif and a polyglycerol core, which has been prepared by a two-step protocol involving the activation of primary and secondary hydroxyl groups by phenyl chloroformate and amine substitution. Each polymer was analyzed by particle size and ζ potential measurements, whereas the respective polyplex formation was determined by ethidium bromide displacement assay, atomic force microscopy (AFM), and surface charge analysis. The in vitro gene silencing properties of the different polymers were evaluated by using a human epithelial carcinoma cell (HeLaS3) line with different proteins (Lamin, CDC2, MAPK2). Polyplexes yielded similar knockdown efficiencies as HiPerFect controls, with comparably low cytotoxicity. Therefore, these efficient and highly biocompatible dendritic polyamines are promising candidates for siRNA delivery in vivo.
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Affiliation(s)
- Wiebke Fischer
- Institut für Chemie und Biochemie, Freie Universität Berlin, Berlin, Germany
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Wagner CB, Studer A. Synthesis of Macro(alkoxyamines) via Hydroboration of Polyolefins with Subsequent Nitroxide Oxidation for Controlled NMP. MACROMOL CHEM PHYS 2010. [DOI: 10.1002/macp.201000420] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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6
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Mangold C, Wurm F, Obermeier B, Frey H. “Functional Poly(ethylene glycol)”: PEG-Based Random Copolymers with 1,2-Diol Side Chains and Terminal Amino Functionality. Macromolecules 2010. [DOI: 10.1021/ma1015352] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Christine Mangold
- Institute of Organic Chemistry, Organic and Macromolecular Chemistry, Duesbergweg 10-14, Johannes Gutenberg-Universität Mainz, D-55099 Mainz, Germany
| | - Frederik Wurm
- Institut des Matériaux, Laboratoire des Polymères, Batiment MXD, Station 12, Ecole Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland
| | - Boris Obermeier
- Institute of Organic Chemistry, Organic and Macromolecular Chemistry, Duesbergweg 10-14, Johannes Gutenberg-Universität Mainz, D-55099 Mainz, Germany
| | - Holger Frey
- Institute of Organic Chemistry, Organic and Macromolecular Chemistry, Duesbergweg 10-14, Johannes Gutenberg-Universität Mainz, D-55099 Mainz, Germany
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Wagner CB, Studer A. Oxidation of Alkylcatecholboranes with Functionalized Nitroxides for Chemical Modification of Cyclohexene, Perallylated Polyglycerol and of Poly(butadiene). European J Org Chem 2010. [DOI: 10.1002/ejoc.201001043] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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8
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Lu J, Toy PH. Organic polymer supports for synthesis and for reagent and catalyst immobilization. Chem Rev 2009; 109:815-38. [PMID: 19128147 DOI: 10.1021/cr8004444] [Citation(s) in RCA: 532] [Impact Index Per Article: 35.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Jinni Lu
- Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, People's Republic of China
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NAGANO T, MIKAMI Y, KIM S, CHIBA K. Construction of Cycloalkane-based Thermomorphic (CBT) Electrolyte Solution Systems and Application for Anodic Conversion of a Furan Derivative. ELECTROCHEMISTRY 2008. [DOI: 10.5796/electrochemistry.76.874] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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10
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Hassine F, Gmouh S, Pucheault M, Vaultier M. Task Specific Onium Salts and Ionic Liquids as Soluble Supports in Grieco’s Multicomponent Synthesis of Tetrahydroquinolines. MONATSHEFTE FUR CHEMIE 2007. [DOI: 10.1007/s00706-007-0708-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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11
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Verron J, Joerger JM, Pucheault M, Vaultier M. Task specific onium salts (TSOSs) as efficient soluble supports for Zard radical addition to olefins. Tetrahedron Lett 2007. [DOI: 10.1016/j.tetlet.2007.04.024] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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12
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Martinelli M, Calderón M, Rodríguez E, Freire JJ, Strumia MC. Polyfunctional MDI oligomers through dendrimerization. Eur Polym J 2007. [DOI: 10.1016/j.eurpolymj.2007.02.005] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Roller S, Türk H, Stumbé JF, Rapp W, Haag R. Polystyrene-graft-Polyglycerol Resins: A New Type of High-Loading Hybrid Support for Organic Synthesis. ACTA ACUST UNITED AC 2006; 8:350-4. [PMID: 16677004 DOI: 10.1021/cc050139b] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The preparation of a dendritic graft polymer by a very efficient synthesis of polyglycerol directly on a polystyrene resin is presented. This one-step process can be performed on a multigram scale to provide a chemically stable polymeric support. The resulting hybrid polymers were fully characterized by diverse analytical methods (NMR, IR, ESEM, UV detection of cleaved protecting groups, and mass-spectrometric methods). They combine a high loading capacity (up to 4.3 mmol g(-1)) with good swelling properties in a wide range of solvents (including water), which is the major drawback for many existing solid phase supports. In comparison to the widely employed PEGylated resins, these hybrid materials offer a 10-fold higher loading capacity. Their suitability as supports for organic synthesis and for the immobilization of reagents has been demonstrated. These materials also swell in water, and consequently, it should be possible to use these new hybrid materials for synthesis in protic solvents.
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Affiliation(s)
- Sebastian Roller
- Institut für Chemie und Biochemie, Freie Universität Berlin, Germany
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Nad S, Roller S, Haag R, Breinbauer R. Electrolysis as an Efficient Key Step in the Homogeneous Polymer-Supported Synthesis of N-Substituted Pyrroles. Org Lett 2006; 8:403-6. [PMID: 16435845 DOI: 10.1021/ol052096d] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
[reaction: see text]. An efficient and general route to the soluble polymer-assisted synthesis of a set of 14 different N-substituted pyrroles using dendritic polyglycerol as a high-loading support is presented. The transformation of furan to the key intermediate 2,5-dialkoxytetrahydrofuran was performed by electrochemical oxidation followed by catalytic hydrogenation with Pt/C in high yield. Both reactions required heterogeneous reagents which can be conveniently used with polyglycerol as a soluble support.
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Affiliation(s)
- Sukanya Nad
- Organische Chemie, Universität Dortmund, Otto-Hahn-Str. 6, D-44227 Dortmund, Germany
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Roller S, Zhou H, Haag R. High-loading polyglycerol supported reagents for Mitsunobu- and acylation-reactions and other useful polyglycerol derivatives. Mol Divers 2005; 9:305-16. [PMID: 16311807 DOI: 10.1007/s11030-005-8117-y] [Citation(s) in RCA: 125] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2004] [Accepted: 11/30/2004] [Indexed: 11/26/2022]
Abstract
In this paper we present soluble dendritic polyglycerol (PG) supported reagents PG-DEAD, PG-PPh3, and PG-DCC as well as scavengers PG-carbonate, PG-carbazate, and PG-amine, which all have been synthesized in high overall conversions and yields using simple purification techniques. The supported reagents have been used simultaneously in Mitsunobu and acylation reactions. All polymeric reagents and scavengers can be removed by simple precipitation/filtration protocols to give chromatography-free products of high purity. In the course of the syntheses of the polymeric reagents three intermediates turned out to be precious polyglycerol derivatives: a mixed carbonate as an electrophilic derivative, polyglyceryl carbazate as a scavenger for carbonyl compounds, as well as polyglycerylamines as amino analogues of polyglycerol.
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Kantchev EAB, Bader SJ, Parquette JR. Oligosaccharide synthesis on a soluble, hyperbranched polymer support via thioglycoside activation. Tetrahedron 2005. [DOI: 10.1016/j.tet.2005.06.101] [Citation(s) in RCA: 15] [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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