1
|
Porras M, Hernández D, González CC, Boto A. “Cut and Paste” Processes in the Search of Bioactive Products: One-Pot, Metal-free O-Radical Scission-Oxidation-Addition of C, N or P-Nucleophiles. Front Chem 2022; 10:884124. [PMID: 35665068 PMCID: PMC9158125 DOI: 10.3389/fchem.2022.884124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Accepted: 04/05/2022] [Indexed: 11/13/2022] Open
Abstract
Hypervalent iodine reagents have been applied in many metal-free, efficient synthesis of natural products and other bioactive compounds. In particular, treatment of alcohols, acetals and acids with hypervalent iodine reagents and iodine results in O-radicals that can undergo a β-scission reaction. Under these oxidative conditions, derivatives of amino acids, peptides or carbohydrates are converted into cationic intermediates, which can subsequently undergo inter- or intramolecular addition of nucleophiles. Most reported papers describe the addition of oxygen nucleophiles, but this review is focused on the addition of carbon, nitrogen and phosphorous nucleophiles. The resulting products (nucleoside and alkaloid analogs, unnatural amino acids, site-selectively modified peptides) are valuable intermediates or analogs of bioactive compounds.
Collapse
|
2
|
Farshadfar K, Gouranourimi A, Ariafard A. How the combination of PhIO and I 2 provides a species responsible for conducting organic reactions through radical mechanisms. Org Biomol Chem 2020; 18:8103-8108. [PMID: 33006357 DOI: 10.1039/d0ob01705a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
A combination of iodosobenzene (PhIO) and molecular iodine (I2) is well-documented to produce a key species capable of conducting various organic reactions through radical mechanisms. This key species is identified here by density functional theory (DFT) calculations to be the hypoiodite radical (IO˙). The calculations show that two equivalents of IO˙ are generated when I2 reacts with two equivalents of PhIO. One of the ensuing IO˙ species acts as a hydrogen abstractor and thus forms an organic radical and the other one is involved in oxidation of the resultant organic radical to afford the final product.
Collapse
Affiliation(s)
- Kaveh Farshadfar
- Department of Chemistry, Islamic Azad University, Central Tehran Branch, Poonak, Tehran 1469669191, Iran
| | - Ali Gouranourimi
- School of Natural Sciences (Chemistry), University of Tasmania, Private Bag 75, Hobart TAS 7001, Australia.
| | - Alireza Ariafard
- School of Natural Sciences (Chemistry), University of Tasmania, Private Bag 75, Hobart TAS 7001, Australia.
| |
Collapse
|
3
|
Liu Q, Gupta A, Okesli-Armlovich A, Qiao W, Fischer CR, Smith M, Carette JE, Bassik MC, Khosla C. Enhancing the Antiviral Efficacy of RNA-Dependent RNA Polymerase Inhibition by Combination with Modulators of Pyrimidine Metabolism. Cell Chem Biol 2020; 27:668-677.e9. [PMID: 32442424 PMCID: PMC7241336 DOI: 10.1016/j.chembiol.2020.05.002] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Revised: 03/12/2020] [Accepted: 05/04/2020] [Indexed: 12/21/2022]
Abstract
Genome-wide analysis of the mode of action of GSK983, a potent antiviral agent, led to the identification of dihydroorotate dehydrogenase as its target along with the discovery that genetic knockdown of pyrimidine salvage sensitized cells to GSK983. Because GSK983 is an ineffective antiviral in the presence of physiological uridine concentrations, we explored combining GSK983 with pyrimidine salvage inhibitors. We synthesized and evaluated analogs of cyclopentenyl uracil (CPU), an inhibitor of uridine salvage. We found that CPU was converted into its triphosphate in cells. When combined with GSK983, CPU resulted in large drops in cellular UTP and CTP pools. Consequently, CPU-GSK983 suppressed dengue virus replication in the presence of physiological concentrations of uridine. In addition, the CPU-GSK983 combination markedly enhanced the effect of RNA-dependent RNA polymerase (RdRp) inhibition on viral infection. Our findings highlight a new host-targeting strategy for potentiating the antiviral activity of RdRp inhibitors.
Collapse
Affiliation(s)
- Qi Liu
- Department of Chemistry, Stanford University, Stanford, CA 94305, USA; Stanford Chemistry, Engineering and Medicine for Human Health (ChEM-H), Stanford University, Stanford, CA 94305, USA
| | - Amita Gupta
- Stanford Chemistry, Engineering and Medicine for Human Health (ChEM-H), Stanford University, Stanford, CA 94305, USA; Department of Chemical Engineering, Stanford University, Stanford, CA 94305, USA
| | - Ayse Okesli-Armlovich
- Department of Chemistry, Stanford University, Stanford, CA 94305, USA; Stanford Chemistry, Engineering and Medicine for Human Health (ChEM-H), Stanford University, Stanford, CA 94305, USA
| | - Wenjie Qiao
- Department of Microbiology and Immunology, Stanford University, Stanford, CA 94305, USA
| | - Curt R Fischer
- Stanford Chemistry, Engineering and Medicine for Human Health (ChEM-H), Stanford University, Stanford, CA 94305, USA
| | - Mark Smith
- Stanford Chemistry, Engineering and Medicine for Human Health (ChEM-H), Stanford University, Stanford, CA 94305, USA
| | - Jan E Carette
- Stanford Chemistry, Engineering and Medicine for Human Health (ChEM-H), Stanford University, Stanford, CA 94305, USA; Department of Microbiology and Immunology, Stanford University, Stanford, CA 94305, USA
| | - Michael C Bassik
- Stanford Chemistry, Engineering and Medicine for Human Health (ChEM-H), Stanford University, Stanford, CA 94305, USA; Department of Genetics, Stanford University, Stanford, CA 94305, USA
| | - Chaitan Khosla
- Department of Chemistry, Stanford University, Stanford, CA 94305, USA; Stanford Chemistry, Engineering and Medicine for Human Health (ChEM-H), Stanford University, Stanford, CA 94305, USA; Department of Chemical Engineering, Stanford University, Stanford, CA 94305, USA.
| |
Collapse
|
4
|
Yoshimura Y, Wakamatsu H, Natori Y, Saito Y, Minakawa N. Glycosylation reactions mediated by hypervalent iodine: application to the synthesis of nucleosides and carbohydrates. Beilstein J Org Chem 2018; 14:1595-1618. [PMID: 30013687 PMCID: PMC6037013 DOI: 10.3762/bjoc.14.137] [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: 02/02/2018] [Accepted: 06/15/2018] [Indexed: 12/23/2022] Open
Abstract
To synthesize nucleoside and oligosaccharide derivatives, we often use a glycosylation reaction to form a glycoside bond. Coupling reactions between a nucleobase and a sugar donor in the former case, and the reaction between an acceptor and a sugar donor of in the latter are carried out in the presence of an appropriate activator. As an activator of the glycosylation, a combination of a Lewis acid catalyst and a hypervalent iodine was developed for synthesizing 4'-thionucleosides, which could be applied for the synthesis of 4'-selenonucleosides as well. The extension of hypervalent iodine-mediated glycosylation allowed us to couple a nucleobase with cyclic allylsilanes and glycal derivatives to yield carbocyclic nucleosides and 2',3'-unsaturated nucleosides, respectively. In addition, the combination of hypervalent iodine and Lewis acid could be used for the glycosylation of glycals and thioglycosides to produce disaccharides. In this paper, we review the use of hypervalent iodine-mediated glycosylation reactions for the synthesis of nucleosides and oligosaccharide derivatives.
Collapse
Affiliation(s)
- Yuichi Yoshimura
- Faculty of Pharmaceutical Sciences, Tohoku Medical and Pharmaceutical University, Komatsushima 4-4-1, Aoba-ku, Sendai, 981-8558, Japan
| | - Hideaki Wakamatsu
- Faculty of Pharmaceutical Sciences, Tohoku Medical and Pharmaceutical University, Komatsushima 4-4-1, Aoba-ku, Sendai, 981-8558, Japan
| | - Yoshihiro Natori
- Faculty of Pharmaceutical Sciences, Tohoku Medical and Pharmaceutical University, Komatsushima 4-4-1, Aoba-ku, Sendai, 981-8558, Japan
| | - Yukako Saito
- Faculty of Pharmaceutical Sciences, Tohoku Medical and Pharmaceutical University, Komatsushima 4-4-1, Aoba-ku, Sendai, 981-8558, Japan
| | - Noriaki Minakawa
- Graduate School of Pharmaceutical Science, Tokushima University, Shomachi 1-78-1, Tokushima, 770-8505, Japan
| |
Collapse
|
5
|
Hazelard D, Compain P. Square sugars: challenges and synthetic strategies. Org Biomol Chem 2017; 15:3806-3827. [DOI: 10.1039/c7ob00386b] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
The synthesis of square sugars requires innovative strategies based on efficient stereoselective methodologies, from organocatalysis to metal carbene insertion.
Collapse
Affiliation(s)
- Damien Hazelard
- Laboratoire de Synthèse Organique et Molécules Bioactives (SYBIO)
- Université de Strasbourg/CNRS (UMR 7509)
- Ecole Europèenne de Chimie, Polyméres et Matériaux (ECPM)
- 25 rue Becquerel
- France
| | - Philippe Compain
- Laboratoire de Synthèse Organique et Molécules Bioactives (SYBIO)
- Université de Strasbourg/CNRS (UMR 7509)
- Ecole Europèenne de Chimie, Polyméres et Matériaux (ECPM)
- 25 rue Becquerel
- France
| |
Collapse
|
6
|
Sathyamoorthi S, Du Bois J. Copper-Catalyzed Oxidative Cyclization of Carboxylic Acids. Org Lett 2016; 18:6308-6311. [DOI: 10.1021/acs.orglett.6b03176] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Shyam Sathyamoorthi
- Department of Chemistry, Stanford University, Stanford, California 94305-5080, United States
| | - J. Du Bois
- Department of Chemistry, Stanford University, Stanford, California 94305-5080, United States
| |
Collapse
|
7
|
Abstract
The preparation, structure, and chemistry of hypervalent iodine compounds are reviewed with emphasis on their synthetic application. Compounds of iodine possess reactivity similar to that of transition metals, but have the advantage of environmental sustainability and efficient utilization of natural resources. These compounds are widely used in organic synthesis as selective oxidants and environmentally friendly reagents. Synthetic uses of hypervalent iodine reagents in halogenation reactions, various oxidations, rearrangements, aminations, C-C bond-forming reactions, and transition metal-catalyzed reactions are summarized and discussed. Recent discovery of hypervalent catalytic systems and recyclable reagents, and the development of new enantioselective reactions using chiral hypervalent iodine compounds represent a particularly important achievement in the field of hypervalent iodine chemistry. One of the goals of this Review is to attract the attention of the scientific community as to the benefits of using hypervalent iodine compounds as an environmentally sustainable alternative to heavy metals.
Collapse
Affiliation(s)
- Akira Yoshimura
- Department of Chemistry and Biochemistry, University of Minnesota Duluth , Duluth, Minnesota 55812, United States
| | - Viktor V Zhdankin
- Department of Chemistry and Biochemistry, University of Minnesota Duluth , Duluth, Minnesota 55812, United States
| |
Collapse
|
8
|
Kim EK, Krishnamurthy R. Synthesis of orotidine by intramolecular nucleosidation. Chem Commun (Camb) 2015; 51:5618-21. [DOI: 10.1039/c5cc00111k] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An intramolecular nucleosidation approach, using orotate as a leaving group, provides easy access to orotidine in high yields.
Collapse
Affiliation(s)
- E.-K. Kim
- Department of Chemistry
- The Scripps Research Institute
- California
| | | |
Collapse
|
9
|
Santana AG, Paz NR, Francisco CG, Suárez E, González CC. Synthesis of Branched Iminosugars through a Hypervalent Iodine(III)-Mediated Radical-Polar Crossover Reaction. J Org Chem 2013; 78:7527-43. [DOI: 10.1021/jo401041s] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Andrés G. Santana
- Instituto de Productos Naturales y Agrobiología del CSIC, Avenida Astrofísico Francisco Sánchez 3, 38206 La
Laguna, Tenerife, Spain
| | - Nieves R. Paz
- Instituto de Productos Naturales y Agrobiología del CSIC, Avenida Astrofísico Francisco Sánchez 3, 38206 La
Laguna, Tenerife, Spain
| | - Cosme G. Francisco
- Instituto de Productos Naturales y Agrobiología del CSIC, Avenida Astrofísico Francisco Sánchez 3, 38206 La
Laguna, Tenerife, Spain
| | - Ernesto Suárez
- Instituto de Productos Naturales y Agrobiología del CSIC, Avenida Astrofísico Francisco Sánchez 3, 38206 La
Laguna, Tenerife, Spain
| | - Concepción C. González
- Instituto de Productos Naturales y Agrobiología del CSIC, Avenida Astrofísico Francisco Sánchez 3, 38206 La
Laguna, Tenerife, Spain
| |
Collapse
|
10
|
Chen H, Li R, Liu Z, Wei S, Zhang H, Li X. Synthesis of kifunensine thioanalogs and their inhibitory activities against HIV-RT and α-mannosidase. Carbohydr Res 2013; 365:1-8. [DOI: 10.1016/j.carres.2012.10.017] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2012] [Revised: 10/19/2012] [Accepted: 10/20/2012] [Indexed: 01/22/2023]
|
11
|
An efficient synthesis of δ-glyconolactams by intramolecular Schmidt–Boyer reaction under microwave radiation. Tetrahedron Lett 2012. [DOI: 10.1016/j.tetlet.2012.10.098] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
12
|
Paz NR, Santana AG, Francisco CG, Suárez E, González CC. Synthesis of Tetrazole-Fused Glycosides by a Tandem Fragmentation–Cyclization Reaction. Org Lett 2012; 14:3388-91. [DOI: 10.1021/ol3013638] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Nieves R. Paz
- Instituto de Productos Naturales y Agrobiología del C.S.I.C., Avenida Astrofísico Francisco Sánchez 3, 38206 La Laguna, Tenerife, Spain
| | - Andrés G. Santana
- Instituto de Productos Naturales y Agrobiología del C.S.I.C., Avenida Astrofísico Francisco Sánchez 3, 38206 La Laguna, Tenerife, Spain
| | - Cosme G. Francisco
- Instituto de Productos Naturales y Agrobiología del C.S.I.C., Avenida Astrofísico Francisco Sánchez 3, 38206 La Laguna, Tenerife, Spain
| | - Ernesto Suárez
- Instituto de Productos Naturales y Agrobiología del C.S.I.C., Avenida Astrofísico Francisco Sánchez 3, 38206 La Laguna, Tenerife, Spain
| | - Concepción C. González
- Instituto de Productos Naturales y Agrobiología del C.S.I.C., Avenida Astrofísico Francisco Sánchez 3, 38206 La Laguna, Tenerife, Spain
| |
Collapse
|
13
|
Wang H, Fan R. Stereoselective Synthesis of 2-Carbamoyl-2-cyanocyclopropanecarboxylates by Tandem Oxidative Cyclization and Neighboring Group-Assisted Decarboxylation. J Org Chem 2010; 75:6994-7. [DOI: 10.1021/jo1014245] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Hua Wang
- Department of Chemistry, Fudan University, 220 Handan Road, Shanghai 200433, China
| | - Renhua Fan
- Department of Chemistry, Fudan University, 220 Handan Road, Shanghai 200433, China
- Shanghai Key Laboratory of Molecular Catalysts and Innovative Materials, Department of Chemistry, Fudan University, 220 Handan Road, Shanghai 200433, China
| |
Collapse
|
14
|
Santana AG, Francisco CG, Suárez E, González CC. Synthesis of Guanidines From Azides: A General and Straightforward Methodology In Carbohydrate Chemistry. J Org Chem 2010; 75:5371-4. [DOI: 10.1021/jo100876r] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Andrés G. Santana
- Instituto de Productos Naturales y Agrobiología del C.S.I.C., Avenida Astrofísico Francisco Sánchez, 3, 38206 La Laguna Tenerife, Spain
| | - Cosme G. Francisco
- Instituto de Productos Naturales y Agrobiología del C.S.I.C., Avenida Astrofísico Francisco Sánchez, 3, 38206 La Laguna Tenerife, Spain
| | - Ernesto Suárez
- Instituto de Productos Naturales y Agrobiología del C.S.I.C., Avenida Astrofísico Francisco Sánchez, 3, 38206 La Laguna Tenerife, Spain
| | - Concepción C. González
- Instituto de Productos Naturales y Agrobiología del C.S.I.C., Avenida Astrofísico Francisco Sánchez, 3, 38206 La Laguna Tenerife, Spain
| |
Collapse
|
15
|
|
16
|
Chiesa K, Shvoryna A, Bernet B, Vasella A. Oligonucleotide Analogues with Integrated Bases and Backbones. Part 24. Helv Chim Acta 2010. [DOI: 10.1002/hlca.201000011] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
17
|
Bande OP, Jadhav VH, Puranik VG, Dhavale DD, Lombardo M. Stereo-controlled approach to pyrrolidine iminosugar C-glycosides and 1,4-dideoxy-1,4-imino-l-allitol using a d-mannose-derived cyclic nitrone. Tetrahedron Lett 2009. [DOI: 10.1016/j.tetlet.2009.09.139] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
|
18
|
Ye Y, Zheng C, Fan R. Solvent-Controlled Oxidative Cyclization for Divergent Synthesis of Highly Functionalized Oxetanes and Cyclopropanes. Org Lett 2009; 11:3156-9. [DOI: 10.1021/ol9012102] [Citation(s) in RCA: 67] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yang Ye
- Department of Chemistry, Fudan University, 220 Handan Road, Shanghai, 200433, China, and Shanghai Key Laboratory of Molecular Catalysts and Innovative Materials, Department of Chemistry, Fudan University, Shanghai, 200433, China
| | - Chen Zheng
- Department of Chemistry, Fudan University, 220 Handan Road, Shanghai, 200433, China, and Shanghai Key Laboratory of Molecular Catalysts and Innovative Materials, Department of Chemistry, Fudan University, Shanghai, 200433, China
| | - Renhua Fan
- Department of Chemistry, Fudan University, 220 Handan Road, Shanghai, 200433, China, and Shanghai Key Laboratory of Molecular Catalysts and Innovative Materials, Department of Chemistry, Fudan University, Shanghai, 200433, China
| |
Collapse
|
19
|
Affiliation(s)
- Viktor V Zhdankin
- Department of Chemistry and Biochemistry, University of Minnesota Duluth, Duluth, Minnesota 55812, USA.
| | | |
Collapse
|
20
|
Francisco CG, González CC, Kennedy AR, Paz NR, Suárez E. Fragmentation of carbohydrate anomeric alkoxyl radicals: new synthesis of chiral 1-fluoro-1-halo-1-iodoalditols. Chemistry 2008; 14:6704-12. [PMID: 18576400 DOI: 10.1002/chem.200800734] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
A new general methodology for the synthesis of 1,1,1-trihaloalditols by starting from 1,5-anhydro-2-deoxy-hex-1-enitol derivatives (glycals) is described. The halogens are introduced sequentially in each of the three different steps of the process. The fluorine is introduced in the first step by electrophilic fluorination of the starting glycal; next, hydroxyhalogenation of the resulting vinyl fluoride allows the addition of any halogen (F, Cl, Br or I) at will, and finally, an iodine atom is inserted through an alkoxyl radical fragmentation reaction. This methodology allows the preparation of diverse types of 1,1,1-trihalogenated compounds (R--CF(2)I, R--CFI(2), R--CFClI and R--CFBrI) under mild conditions compatible with sensitive substituents. In some cases, the diastereomeric mixtures generated from R--CFClI and R--CFBrI can be chromatographically separated, and their configuration determined by X-ray crystallographic analysis. The synthetic usefulness of these compounds has been preliminarily assessed by examining the reactivity of the fluorinated radical generated by rupture of the C--I bond.
Collapse
Affiliation(s)
- Cosme G Francisco
- Instituto de Productos Naturales y Agrobiología, Consejo Superior de Investigaciones Cientificas, Carretera de La Esperanza 3, La Laguna, Tenerife, Spain.
| | | | | | | | | |
Collapse
|
21
|
Chatterjee N, Pandit P, Halder S, Patra A, Maiti DK. Generation of Nitrile Oxides under Nanometer Micelles Built in Neutral Aqueous Media: Synthesis of Novel Glycal-Based Chiral Synthons and Optically Pure 2,8-Dioxabicyclo[4.4.0]decene Core. J Org Chem 2008; 73:7775-8. [DOI: 10.1021/jo801337k] [Citation(s) in RCA: 63] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Nirbhik Chatterjee
- Department of Chemistry, University Colleges of Science and Technology, University of Calcutta, 92, A. P. C. Road, Kolkata-700009, India
| | - Palash Pandit
- Department of Chemistry, University Colleges of Science and Technology, University of Calcutta, 92, A. P. C. Road, Kolkata-700009, India
| | - Samiran Halder
- Department of Chemistry, University Colleges of Science and Technology, University of Calcutta, 92, A. P. C. Road, Kolkata-700009, India
| | - Amarendra Patra
- Department of Chemistry, University Colleges of Science and Technology, University of Calcutta, 92, A. P. C. Road, Kolkata-700009, India
| | - Dilip K. Maiti
- Department of Chemistry, University Colleges of Science and Technology, University of Calcutta, 92, A. P. C. Road, Kolkata-700009, India
| |
Collapse
|
22
|
Moonen K, Laureyn I, Stevens CV. Synthetic methods for azaheterocyclic phosphonates and their biological activity. Chem Rev 2005; 104:6177-215. [PMID: 15584699 DOI: 10.1021/cr030451c] [Citation(s) in RCA: 390] [Impact Index Per Article: 20.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Kristof Moonen
- Department of Organic Chemistry, Faculty of Agricultural and Applied Biological Sciences, Ghent University, Coupure links 653, B-9000 Gent, Belgium
| | | | | |
Collapse
|
23
|
Koser GF. The Synthesis of Heterocyclic Compounds with Hypervalent Organoiodine Reagents. ADVANCES IN HETEROCYCLIC CHEMISTRY 2004. [DOI: 10.1016/s0065-2725(03)86004-x] [Citation(s) in RCA: 61] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
|
24
|
Yang D, Yan YL, Law KL, Zhu NY. Lewis acid-catalyzed atom transfer radical cyclization of unsaturated β-keto amides. Tetrahedron 2003. [DOI: 10.1016/j.tet.2003.06.009] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
25
|
González CC, León EI, Riesco-Fagundo C, Suárez E. Fragmentation of carbohydrate anomeric alkoxy radicals: a new synthesis of chiral 1-halo-1-bromo compounds. Tetrahedron Lett 2003. [DOI: 10.1016/s0040-4039(03)01399-6] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
26
|
García-Moreno MI, Díaz-Pérez P, Benito JM, Ortiz Mellet C, Defaye J, García Fernández JM. One-step synthesis of non-anomeric sugar isothiocyanates from sugar azides. Carbohydr Res 2002; 337:2329-34. [PMID: 12433497 DOI: 10.1016/s0008-6215(02)00273-2] [Citation(s) in RCA: 29] [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
Tandem Staudinger-aza-Wittig reaction of primary azidodeoxy sugars with triphenylphosphine-carbon disulfide affords the corresponding primary deoxyisothiocyanato sugars in high yield. No products arising from O --> N acyl migration or formation of dimeric carbodiimides were observed. Interestingly, a polymer-supported triarylphosphine can advantageously replace triphenylphosphine, thus limiting the purification step to a simple filtration process. The reaction also allows the preparation of 5-deoxy-5-isothiocyanato sugars, a hitherto unknown class of compounds, from the corresponding azide precursors. Secondary sugar azides bearing the azido group at an endocyclic carbon atom afforded much lower isothiocyanation yields under these reaction conditions.
Collapse
Affiliation(s)
- M Isabel García-Moreno
- Departamento de Química Orgánica, Facultad de Química, Universidad de Sevilla, Aptdo 553, E-41071 Sevilla, Spain
| | | | | | | | | | | |
Collapse
|
27
|
|
28
|
Martı́n A, Pérez-Martı́n I, Suárez E. Sequential alkoxy radical fragmentation–intermolecular allylation in carbohydrate systems. Tetrahedron Lett 2002. [DOI: 10.1016/s0040-4039(02)00911-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|