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Wang X, Feng F, Nie J, Zhang F, Ma J. Enantioselective Construction of Amino Carboxylic‐Phosphonic Acid Derivatives Enabled by Chiral Amino Thiourea‐Catalyzed Decarboxylative Mannich Reaction. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202200306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Xue‐Qi Wang
- Department of Chemistry Tianjin Key Laboratory of Molecular Optoelectronic Sciences Frontiers Science Center for Synthetic Biology (Ministry of Education) Tianjin Collaborative Innovation Centre of Chemical Science & Engineering Tianjin University Tianjin 300072
- Joint School of National University of Singapore and Tianjin University International Campus of Tianjin University Binhai New City Fuzhou 350207 People's Republic of China
| | - Fang‐Fang Feng
- Department of Chemistry Tianjin Key Laboratory of Molecular Optoelectronic Sciences Frontiers Science Center for Synthetic Biology (Ministry of Education) Tianjin Collaborative Innovation Centre of Chemical Science & Engineering Tianjin University Tianjin 300072
- Joint School of National University of Singapore and Tianjin University International Campus of Tianjin University Binhai New City Fuzhou 350207 People's Republic of China
| | - Jing Nie
- Department of Chemistry Tianjin Key Laboratory of Molecular Optoelectronic Sciences Frontiers Science Center for Synthetic Biology (Ministry of Education) Tianjin Collaborative Innovation Centre of Chemical Science & Engineering Tianjin University Tianjin 300072
- Joint School of National University of Singapore and Tianjin University International Campus of Tianjin University Binhai New City Fuzhou 350207 People's Republic of China
| | - Fa‐Guang Zhang
- Department of Chemistry Tianjin Key Laboratory of Molecular Optoelectronic Sciences Frontiers Science Center for Synthetic Biology (Ministry of Education) Tianjin Collaborative Innovation Centre of Chemical Science & Engineering Tianjin University Tianjin 300072
- Joint School of National University of Singapore and Tianjin University International Campus of Tianjin University Binhai New City Fuzhou 350207 People's Republic of China
| | - Jun‐An Ma
- Department of Chemistry Tianjin Key Laboratory of Molecular Optoelectronic Sciences Frontiers Science Center for Synthetic Biology (Ministry of Education) Tianjin Collaborative Innovation Centre of Chemical Science & Engineering Tianjin University Tianjin 300072
- Joint School of National University of Singapore and Tianjin University International Campus of Tianjin University Binhai New City Fuzhou 350207 People's Republic of China
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2
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Organocatalytic esterification of polysaccharides for food applications: A review. Trends Food Sci Technol 2022. [DOI: 10.1016/j.tifs.2021.11.028] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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3
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Wojaczyńska E, Steppeler F, Iwan D, Scherrmann MC, Marra A. Synthesis and Applications of Carbohydrate-Based Organocatalysts. Molecules 2021; 26:7291. [PMID: 34885873 PMCID: PMC8659088 DOI: 10.3390/molecules26237291] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2021] [Revised: 11/22/2021] [Accepted: 11/24/2021] [Indexed: 12/22/2022] Open
Abstract
Organocatalysis is a very useful tool for the asymmetric synthesis of biologically or pharmacologically active compounds because it avoids the use of noxious metals, which are difficult to eliminate from the target products. Moreover, in many cases, the organocatalysed reactions can be performed in benign solvents and do not require anhydrous conditions. It is well-known that most of the above-mentioned reactions are promoted by a simple aminoacid, l-proline, or, to a lesser extent, by the more complex cinchona alkaloids. However, during the past three decades, other enantiopure natural compounds, the carbohydrates, have been employed as organocatalysts. In the present exhaustive review, the detailed preparation of all the sugar-based organocatalysts as well as their catalytic properties are described.
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Affiliation(s)
- Elżbieta Wojaczyńska
- Faculty of Chemistry, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50 370 Wrocław, Poland
| | - Franz Steppeler
- Faculty of Chemistry, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50 370 Wrocław, Poland
| | - Dominika Iwan
- Faculty of Chemistry, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50 370 Wrocław, Poland
| | - Marie-Christine Scherrmann
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO), Université Paris-Saclay, Bâtiment 420, 91405 Orsay, France
| | - Alberto Marra
- Institut des Biomolécules Max Mousseron (IBMM-UMR 5247), Université de Montpellier, Pôle Chimie Balard Recherche, 1919 Route de Mende, 34293 Montpellier, France
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4
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Agrahari AK, Bose P, Jaiswal MK, Rajkhowa S, Singh AS, Hotha S, Mishra N, Tiwari VK. Cu(I)-Catalyzed Click Chemistry in Glycoscience and Their Diverse Applications. Chem Rev 2021; 121:7638-7956. [PMID: 34165284 DOI: 10.1021/acs.chemrev.0c00920] [Citation(s) in RCA: 154] [Impact Index Per Article: 51.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Copper(I)-catalyzed 1,3-dipolar cycloaddition between organic azides and terminal alkynes, commonly known as CuAAC or click chemistry, has been identified as one of the most successful, versatile, reliable, and modular strategies for the rapid and regioselective construction of 1,4-disubstituted 1,2,3-triazoles as diversely functionalized molecules. Carbohydrates, an integral part of living cells, have several fascinating features, including their structural diversity, biocompatibility, bioavailability, hydrophilicity, and superior ADME properties with minimal toxicity, which support increased demand to explore them as versatile scaffolds for easy access to diverse glycohybrids and well-defined glycoconjugates for complete chemical, biochemical, and pharmacological investigations. This review highlights the successful development of CuAAC or click chemistry in emerging areas of glycoscience, including the synthesis of triazole appended carbohydrate-containing molecular architectures (mainly glycohybrids, glycoconjugates, glycopolymers, glycopeptides, glycoproteins, glycolipids, glycoclusters, and glycodendrimers through regioselective triazole forming modular and bio-orthogonal coupling protocols). It discusses the widespread applications of these glycoproducts as enzyme inhibitors in drug discovery and development, sensing, gelation, chelation, glycosylation, and catalysis. This review also covers the impact of click chemistry and provides future perspectives on its role in various emerging disciplines of science and technology.
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Affiliation(s)
- Anand K Agrahari
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi, Uttar Pradesh 221005, India
| | - Priyanka Bose
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi, Uttar Pradesh 221005, India
| | - Manoj K Jaiswal
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi, Uttar Pradesh 221005, India
| | - Sanchayita Rajkhowa
- Department of Chemistry, Jorhat Institute of Science and Technology (JIST), Jorhat, Assam 785010, India
| | - Anoop S Singh
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi, Uttar Pradesh 221005, India
| | - Srinivas Hotha
- Department of Chemistry, Indian Institute of Science and Engineering Research (IISER), Pune, Maharashtra 411021, India
| | - Nidhi Mishra
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi, Uttar Pradesh 221005, India
| | - Vinod K Tiwari
- Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi, Uttar Pradesh 221005, India
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Non-Covalent Interactions in Enantioselective Organocatalysis: Theoretical and Mechanistic Studies of Reactions Mediated by Dual H-Bond Donors, Bifunctional Squaramides, Thioureas and Related Catalysts. Catalysts 2021. [DOI: 10.3390/catal11050569] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Chiral bifunctional dual H-bond donor catalysts have become one of the pillars of organocatalysis. They include squaramide, thiosquaramide, thiourea, urea, and even selenourea-based catalysts combined with chiral amines, cinchona alkaloids, sulfides, phosphines and more. They can promote several types of reactions affording products in very high yields and excellent stereoselectivities in many cases: conjugate additions, cycloadditions, the aldol and Henry reactions, the Morita–Baylis–Hilman reaction, even cascade reactions, among others. The desire to understand mechanisms and the quest for the origins of stereoselectivity, in attempts to find guidelines for developing more efficient catalysts for new transformations, has promoted many mechanistic and theoretical studies. In this review, we survey the literature published in this area since 2015.
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6
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Meninno S. Valorization of Waste: Sustainable Organocatalysts from Renewable Resources. CHEMSUSCHEM 2020; 13:439-468. [PMID: 31634413 DOI: 10.1002/cssc.201902500] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/10/2019] [Indexed: 06/10/2023]
Abstract
One of the greatest challenges facing our society is to reconcile our need to develop efficient and sophisticated chemical processes with the limited resources of our planet and its restricted ability to adsorb pollution. Organocatalysis has allowed many issues to be addressed in the development of sophisticated, but less polluting, processes. However, minimizing waste also means an efficient utilization of raw and renewable materials. Waste biomass represents an alternative to conventional petroleum-based chemical manufacturing and is a highly attractive renewable resource for the production of chemicals and high-value-added organocatalysts. Recent achievements in the use of renewable biomass feedstocks for the synthesis of organocatalysts are presented. Their application in synthetic methodologies, including multicomponent reactions, which are performed under solvent-free conditions or in eco-friendly reaction media, as well as recycling and reusing the organocatalysts, is illustrated. A few pioneering examples that demonstrate the potential of these promoters in asymmetric synthesis have also been documented. In particular, this review covers examples on the use of hetero- and homogeneous organocatalysts derived from 1) waste biopolymers, such as chitosan, alginic acid, and cellulose; ii) renewable platform molecules, such as levoglucosenone, isosorbide, mannose, d-glucosamine, and lecithin; 3) terpenes and rosin, such as pinane, isosteviol, and abietic acid; and iv) natural proteins (gelatin, bovine tendons, silk fibroin proteins).
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Affiliation(s)
- Sara Meninno
- Dipartimento di Chimica e Biologia, University of Salerno, Via Giovanni Paolo II, 84084, Fisciano, Italy
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7
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Nemcsok T, Rapi Z, Bagi P, Bakó P. Synthesis and application of novel carbohydrate-based ammonium and triazolium salts. SYNTHETIC COMMUN 2019. [DOI: 10.1080/00397911.2019.1625403] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Tamás Nemcsok
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, Budapest, Hungary
| | - Zsolt Rapi
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, Budapest, Hungary
| | - Péter Bagi
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, Budapest, Hungary
| | - Péter Bakó
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, Budapest, Hungary
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8
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Chiral tetraoxacalix[2]arene[2]triazine-based organocatalysts for Enantioselective Aldol reactions. Tetrahedron Lett 2019. [DOI: 10.1016/j.tetlet.2019.05.051] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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9
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Adam L, Schefzig L, Pecchioli T, Zimmer R, Reissig HU. New bifunctional carbohydrate-like thiourea derivatives – design and first application in organocatalysis. SYNTHETIC COMMUN 2018. [DOI: 10.1080/00397911.2018.1468465] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Lutz Adam
- Institut für Chemie und Biochemie, Freie Universität Berlin, Takustrasse 3, Berlin, Germany
| | - Luise Schefzig
- Institut für Chemie und Biochemie, Freie Universität Berlin, Takustrasse 3, Berlin, Germany
| | - Tommaso Pecchioli
- Institut für Chemie und Biochemie, Freie Universität Berlin, Takustrasse 3, Berlin, Germany
| | - Reinhold Zimmer
- Institut für Chemie und Biochemie, Freie Universität Berlin, Takustrasse 3, Berlin, Germany
| | - Hans-Ulrich Reissig
- Institut für Chemie und Biochemie, Freie Universität Berlin, Takustrasse 3, Berlin, Germany
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10
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Carmona JA, Gonzalo GD, Serrano I, Crespo-Peña AM, Šimek M, Monge D, Fernández R, Lassaletta JM. Asymmetric organocatalytic synthesis of tertiary azomethyl alcohols: key intermediates towards azoxy compounds and α-hydroxy-β-amino esters. Org Biomol Chem 2018; 15:2993-3005. [PMID: 28294261 DOI: 10.1039/c7ob00308k] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of peracylated glycosamine-derived thioureas have been synthesized and their behavior as bifunctional organocatalysts has been tested in the enantioselective nucleophilic addition of formaldehyde tert-butyl hydrazone to aliphatic α-keto esters for the synthesis of tertiary azomethyl alcohols. Using the 1,3,4,6-tetra-O-acetyl-2-amino-2-deoxy-β-d-glucosamine derived 3,5-bis-(trifluoromethyl)phenyl thiourea the reaction could be accomplished with high yields (75-98%) and moderate enantioselectivities (50-64% ee). Subsequent high-yielding and racemization-free tranformations of both aromatic- and aliphatic-substituted diazene products in a one pot fashion provide a direct entry to valuable azoxy compounds and α-hydroxy-β-amino esters.
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Affiliation(s)
- José A Carmona
- Instituto de Investigaciones Químicas (CSIC-US) and Centro de Innovación en Química Avanzada (ORFEO-CINQA), Avda. Américo Vespucio, 49, 41092 Sevilla, Spain.
| | - Gonzalo de Gonzalo
- Departamento de Química Orgánica, Universidad de Sevilla and Centro de Innovación en Química Avanzada (ORFEO-CINQA), C/ Prof. García González, 1, 41012 Sevilla, Spain.
| | - Inmaculada Serrano
- Departamento de Química Orgánica, Universidad de Sevilla and Centro de Innovación en Química Avanzada (ORFEO-CINQA), C/ Prof. García González, 1, 41012 Sevilla, Spain.
| | - Ana M Crespo-Peña
- Instituto de Investigaciones Químicas (CSIC-US) and Centro de Innovación en Química Avanzada (ORFEO-CINQA), Avda. Américo Vespucio, 49, 41092 Sevilla, Spain.
| | - Michal Šimek
- Instituto de Investigaciones Químicas (CSIC-US) and Centro de Innovación en Química Avanzada (ORFEO-CINQA), Avda. Américo Vespucio, 49, 41092 Sevilla, Spain.
| | - David Monge
- Departamento de Química Orgánica, Universidad de Sevilla and Centro de Innovación en Química Avanzada (ORFEO-CINQA), C/ Prof. García González, 1, 41012 Sevilla, Spain.
| | - Rosario Fernández
- Departamento de Química Orgánica, Universidad de Sevilla and Centro de Innovación en Química Avanzada (ORFEO-CINQA), C/ Prof. García González, 1, 41012 Sevilla, Spain.
| | - José M Lassaletta
- Instituto de Investigaciones Químicas (CSIC-US) and Centro de Innovación en Química Avanzada (ORFEO-CINQA), Avda. Américo Vespucio, 49, 41092 Sevilla, Spain.
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11
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Borges-González J, Feher-Voelger A, Crisóstomo FP, Morales EQ, Martín T. Tetrahydropyran-Based Hybrid Dipeptides as Asymmetric Catalysts for Michael Addition of Aldehydes to β-Nitrostyrenes. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201601193] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Jorge Borges-González
- Instituto de Productos Naturales y Agrobiología-CSIC; Avda. Astrofísico Francisco Sánchez, 3 38206 La Laguna, S/C de Tenerife Spain
| | - Andrés Feher-Voelger
- Instituto de Productos Naturales y Agrobiología-CSIC; Avda. Astrofísico Francisco Sánchez, 3 38206 La Laguna, S/C de Tenerife Spain
| | - Fernando Pinacho Crisóstomo
- Instituto de Productos Naturales y Agrobiología-CSIC; Avda. Astrofísico Francisco Sánchez, 3 38206 La Laguna, S/C de Tenerife Spain
- Instituto Universitario de Bio-Orgánica “Antonio González”, CIBICAN; Avda. Astrofísico Francisco Sánchez, 2 38206 La Laguna, S/C de Tenerife Spain
| | - Ezequiel Q. Morales
- Instituto de Productos Naturales y Agrobiología-CSIC; Avda. Astrofísico Francisco Sánchez, 3 38206 La Laguna, S/C de Tenerife Spain
| | - Tomás Martín
- Instituto de Productos Naturales y Agrobiología-CSIC; Avda. Astrofísico Francisco Sánchez, 3 38206 La Laguna, S/C de Tenerife Spain
- Instituto Universitario de Bio-Orgánica “Antonio González”, CIBICAN; Avda. Astrofísico Francisco Sánchez, 2 38206 La Laguna, S/C de Tenerife Spain
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12
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Tamaddon F, KazemiVarnamkhasti M. Scalable preparation, characterization, and application of alkali-treated starch as a new organic base catalyst. Carbohydr Res 2017; 437:9-15. [PMID: 27883908 DOI: 10.1016/j.carres.2016.10.014] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2016] [Revised: 10/27/2016] [Accepted: 10/28/2016] [Indexed: 11/27/2022]
Abstract
Preparation, characterization, and application of alkali starch (AS) given by dry co-grinding of starch and alkali is described in this work. Grinding using a mortar (agate) and pestle or, more conveniently, a ball mill has been found to be satisfactory for the preparation of the AS. The AS products were characterized by scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR) and x-ray fluorescence (XRF) analyses. The base capacities of ASs were 4.25-4.45 mmol/g, respectively. AS is a low cost and easy to handle base catalyst that showed promising catalytic performance in the synthesis of a dihydroquinazoline-based antibacterial drug that involves tandem hydration or decarboxylative amidation, imination, and Aza-Michael reactions.
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Affiliation(s)
- Fatemeh Tamaddon
- Department of Chemistry, Faculty of Science, Yazd University, Yazd 89195-741, Iran.
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13
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Vasicine from Adhatoda vasica as an organocatalyst for metal-free Henry reaction and reductive heterocyclization of o-nitroacylbenzenes. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.09.095] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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14
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WITHDRAWN: Scalable preparation, characterization, and application of alkali-treated starch as a new organic base catalyst. Carbohydr Res 2016. [DOI: 10.1016/j.carres.2016.11.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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15
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Esfandiary N, Nakisa A, Azizi K, Azarnia J, Radfar I, Heydari A. Glucose-coated superparamagnetic nanoparticle-catalysed pyrazole synthesis in water. Appl Organomet Chem 2016. [DOI: 10.1002/aoc.3641] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
| | - Athar Nakisa
- Tarbiat Modares University; Tehran PO Box: 14155-4838 Iran
| | - Kobra Azizi
- Tarbiat Modares University; Tehran PO Box: 14155-4838 Iran
| | | | - Iman Radfar
- Tarbiat Modares University; Tehran PO Box: 14155-4838 Iran
| | - Akbar Heydari
- Tarbiat Modares University; Tehran PO Box: 14155-4838 Iran
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16
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Janvier M, Moebs-Sanchez S, Popowycz F. Bio-Based Amides from Renewable Isosorbide by a Direct and Atom-Economic Boric Acid Amidation Methodology. European J Org Chem 2016. [DOI: 10.1002/ejoc.201600186] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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17
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Tiwari VK, Mishra BB, Mishra KB, Mishra N, Singh AS, Chen X. Cu-Catalyzed Click Reaction in Carbohydrate Chemistry. Chem Rev 2016; 116:3086-240. [PMID: 26796328 DOI: 10.1021/acs.chemrev.5b00408] [Citation(s) in RCA: 523] [Impact Index Per Article: 65.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Cu(I)-catalyzed azide-alkyne 1,3-dipolar cycloaddition (CuAAC), popularly known as the "click reaction", serves as the most potent and highly dependable tool for facile construction of simple to complex architectures at the molecular level. Click-knitted threads of two exclusively different molecular entities have created some really interesting structures for more than 15 years with a broad spectrum of applicability, including in the fascinating fields of synthetic chemistry, medicinal science, biochemistry, pharmacology, material science, and catalysis. The unique properties of the carbohydrate moiety and the advantages of highly chemo- and regioselective click chemistry, such as mild reaction conditions, efficient performance with a wide range of solvents, and compatibility with different functionalities, together produce miraculous neoglycoconjugates and neoglycopolymers with various synthetic, biological, and pharmaceutical applications. In this review we highlight the successful advancement of Cu(I)-catalyzed click chemistry in glycoscience and its applications as well as future scope in different streams of applied sciences.
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Affiliation(s)
- Vinod K Tiwari
- Department of Chemistry, Centre of Advanced Study, Institute of Science, Banaras Hindu University , Varanasi, Uttar Pradesh-221005, India
| | - Bhuwan B Mishra
- Department of Chemistry, Centre of Advanced Study, Institute of Science, Banaras Hindu University , Varanasi, Uttar Pradesh-221005, India
| | - Kunj B Mishra
- Department of Chemistry, Centre of Advanced Study, Institute of Science, Banaras Hindu University , Varanasi, Uttar Pradesh-221005, India
| | - Nidhi Mishra
- Department of Chemistry, Centre of Advanced Study, Institute of Science, Banaras Hindu University , Varanasi, Uttar Pradesh-221005, India
| | - Anoop S Singh
- Department of Chemistry, Centre of Advanced Study, Institute of Science, Banaras Hindu University , Varanasi, Uttar Pradesh-221005, India
| | - Xi Chen
- Department of Chemistry, One Shields Avenue, University of California-Davis , Davis, California 95616, United States
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18
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Azad CS, Khan IA, Narula AK. Organocatalyzed asymmetric Michael addition by an efficient bifunctional carbohydrate–thiourea hybrid with mechanistic DFT analysis. Org Biomol Chem 2016; 14:11454-11461. [DOI: 10.1039/c6ob02158a] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of thiourea based bifunctional organocatalysts having d-glucose as a core scaffold were synthesized and examined as catalysts for the asymmetric Michael addition reaction of aryl/alkyl trans-β-nitrostyrenes over cyclohexanone and other Michael donors having active methylene.
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Affiliation(s)
- Chandra S. Azad
- “Hygeia” Centre of Excellence in Pharmaceutical Sciences (CEPS)
- GGS Indraprastha University
- New Delhi
- India
| | - Imran A. Khan
- Department of Chemistry
- Guru Nanak Dev University
- Amritsar
- India
| | - Anudeep K. Narula
- “Hygeia” Centre of Excellence in Pharmaceutical Sciences (CEPS)
- GGS Indraprastha University
- New Delhi
- India
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19
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Pinheiro DLJ, Batista GMF, Gonçalves JR, Duarte TN, Amarante GW. Sugar-Based Organocatalyst for the Diastereoselective Desymmetrization of Dibenzylideneacetones. European J Org Chem 2015. [DOI: 10.1002/ejoc.201501393] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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20
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Novel 3-C-aminomethyl-hexofuranose-derived thioureas and their testing in asymmetric catalysis. ACTA ACUST UNITED AC 2015. [DOI: 10.1016/j.tetasy.2015.07.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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21
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Sucman N, Pogrebnoi V, Obushak M, Melnic E, Kravtsov V, Macaev F. The Synthesis of New Spirolactones from Substituted Isatins. CHEMISTRY JOURNAL OF MOLDOVA 2015. [DOI: 10.19261/cjm.2015.10(1).09] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
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