1
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Abstract
Iminosugars are naturally occurring carbohydrate analogues known since 1967. These natural compounds and hundreds of their synthetic derivatives prepared over five decades have been mainly exploited to inhibit the glycosidases, the enzymes catalysing the glycosidic bond cleavage, in order to find new drugs for the treatment of type 2 diabetes and other diseases. However, iminosugars are also inhibitors of glycosyltransferases, the enzymes responsible for the synthesis of oligosaccharides and glycoconjugates. The selective inhibition of specific glycosyltransferases involved in cancer or bacterial infections could lead to innovative therapeutic agents. The synthesis and biological properties of all the iminosugars assayed to date as glycosyltransferase inhibitors are reviewed in the present article.
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Affiliation(s)
- Irene Conforti
- Institut des Biomolécules Max Mousseron (IBMM), UMR 5247, CNRS, Université de Montpellier, Ecole Nationale Supérieure de Chimie de Montpellier, 8 Rue de l'Ecole Normale, 34296 Montpellier cedex 5, France.
| | - Alberto Marra
- Institut des Biomolécules Max Mousseron (IBMM), UMR 5247, CNRS, Université de Montpellier, Ecole Nationale Supérieure de Chimie de Montpellier, 8 Rue de l'Ecole Normale, 34296 Montpellier cedex 5, France.
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2
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Hanessian-Hullar reaction in the synthesis of highly substituted trans-3,4-dihydroxypyrrolidines: Rhamnulose iminosugar mimics inhibit α-glucosidase. Tetrahedron 2020. [DOI: 10.1016/j.tet.2019.130758] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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3
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Abstract
Topochemical reactions are solid-state reactions that transpire under the strict control of molecular packing in the crystal lattice. Due to this lattice control, these reactions generate products in a regio-/stereospecific manner and in very high yields. In a broader sense, topochemical reactions mimic nature's way of carrying out reactions in a confined environment of enzymes giving specific products. Apart from their remarkable specificity, topochemical reactions have many other interesting features that make these reactions more attractive than solution-phase reactions. Solution-phase reactions necessitate the use of reactants, reagents, catalysts, and solvents and often give products along with varying amounts of byproducts, necessitating complex workup and chromatographic purification using various chemicals. These inevitable chemical wastes from solution-state reactions could be avoided by topochemical reactions, as they are solvent-free and catalyst-free and often do not require any chromatographic purification in view of their specificity and high yielding nature. Also the confinement offered by the crystal lattice gives products that are not possible by solution-phase reactions. Another interesting feature of topochemical reactions is the possibility of formation of products in an ordered (crystalline) form, which imparts interesting properties. Thus, topochemical reactions have control not only at the molecular level (regio-/stereospecificity) but also at the supramolecular level (packing). Many topochemical reactions happen in single-crystal-to-single-crystal (SCSC) fashion, and crystal structure analysis of such reactions often gives mechanistic insights and knowledge about the geometrical criteria required for the reaction. Despite all these attractive features, reactions that can be done topochemically are limited. There is tremendous interest in the development of new categories of topochemical reactions and strategies to achieve reactivity in crystals. In this Account, we will summarize our attempts to develop topochemical azide-alkyne cycloaddition (TAAC) reactions. We have used hydrogen-bonding as the main noncovalent interaction for aligning azide-and-alkyne-substituted derivatives of various biomolecules in orientations suitable for their proximity-driven cycloaddition reaction in crystals. Overall, three major classes of biomolecules; carbohydrates, nucleosides, and peptides were successfully exploited for their TAAC reactions using conventional O-H···O, N-H···O, and N-H···N hydrogen bonds as supramolecular glues for controlling their assembly in crystals. The crystals of these monomers underwent TAAC reaction either spontaneously at room temperature or under heating yielding triazole-linked biopolymer mimics. The ordered packing of product molecules imparted special properties to the products formed. The legendary "cream of the crop" azide-alkyne click reaction has diverse applications in the areas of bioconjugation, material science, polymer synthesis, and so forth. Belonging to the same genre, TAAC is a novel metal-free approach for making the triazole-linked products employing the ordered crystal/gel as a reaction medium. In brief, our studies suggest that TAAC reaction can be implemented in diverse molecular categories and has high potential to develop into a field with practical applications.
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Affiliation(s)
- Kuntrapakam Hema
- School of Chemistry, Indian Institute of Science Education and Research Thiruvananthapuram, Thiruvananthapuram, Kerala-695551, India
| | - Kana M. Sureshan
- School of Chemistry, Indian Institute of Science Education and Research Thiruvananthapuram, Thiruvananthapuram, Kerala-695551, India
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4
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Verma AK, Dubbu S, Chennaiah A, Vankar YD. Synthesis of di- and trihydroxy proline derivatives from D-glycals: Application in the synthesis of polysubstituted pyrrolizidines and bioactive 1C-aryl/alkyl pyrrolidines. Carbohydr Res 2019; 475:48-55. [PMID: 30825721 DOI: 10.1016/j.carres.2019.02.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2019] [Revised: 02/01/2019] [Accepted: 02/14/2019] [Indexed: 10/27/2022]
Abstract
Six different types of O-benzyl protected proline derivatives have been synthesized from D-glycals and 2C-formyl-glycals. One of the di-O-benzyl protected proline derivatives has been utilized for the synthesis of polysubstituted pyrrolizidines via [3 + 2] cycloaddition in a stereoselective manner. Further, we also report on the stereoselective synthesis of biologically active 1C-aryl/alkyl pyrrolidines i.e. 4-epi-radicamine B, 4-epi-radicamine A, 1C-butyl and 1C-methyl pyrrolidines through double reductive amination of a variety of D-glucal derived diketones with p-methoxybenzylamine.
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Affiliation(s)
- Ashish Kumar Verma
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur, 208016, India
| | - Sateesh Dubbu
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur, 208016, India
| | - Ande Chennaiah
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur, 208016, India
| | - Yashwant D Vankar
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur, 208016, India.
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5
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Reddy NR, Kumar R, Baskaran S. A Direct Method for the Efficient Synthesis of Benzylidene Acetal at Room Temperature. European J Org Chem 2019. [DOI: 10.1002/ejoc.201801731] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
| | - Rashmi Kumar
- Department of Chemistry; Indian Institute of Technology Madras; 600036 Chennai India
| | - Sundarababu Baskaran
- Department of Chemistry; Indian Institute of Technology Madras; 600036 Chennai India
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6
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Prasad SS, Reddy NR, Baskaran S. One-Pot Synthesis of Structurally Diverse Iminosugar-Based Hybrid Molecules. J Org Chem 2018; 83:9604-9618. [DOI: 10.1021/acs.joc.8b00748] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Sure Siva Prasad
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, India
| | | | - Sundarababu Baskaran
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, India
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7
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Diastereoselective synthesis of peptidomimetics in one-pot Ugi reaction using trans-4-isopropylcyclohexanecarboxylic acid. MONATSHEFTE FUR CHEMIE 2018. [DOI: 10.1007/s00706-017-2086-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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8
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Prasad SS, Baskaran S. Iminosugar C-Nitromethyl Glycoside: Stereoselective Synthesis of Isoxazoline and Isoxazole-Fused Bicyclic Iminosugars. J Org Chem 2018; 83:1558-1564. [PMID: 29313687 DOI: 10.1021/acs.joc.7b02803] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A simple and efficient method for the stereoselective synthesis of isoxazoline/isoxazole-fused iminosugar derivatives has been developed using intramolecular nitrile oxide cycloaddition (INOC) as a key step. Iminosugar C-nitromethyl glycosides, derived from simple carbohydrates, served as excellent nitrile oxide precursors in 1,3-dipolar cycloaddition reactions. N-Alkenyl iminosugar C-nitromethyl glycosides afforded novel isoxazoline-fused indolizidine-, pyrrolizidine-, and quinolizidine-based iminosugars in excellent yields with a high degree of stereoselectivity, whereas N-alkynyl iminosugar C-nitromethyl glycosides furnished the corresponding isoxazole containing tricyclic iminosugars in very good yields.
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Affiliation(s)
- Sure Siva Prasad
- Department of Chemistry, Indian Institute of Technology Madras , Chennai 600036, India
| | - Sundarababu Baskaran
- Department of Chemistry, Indian Institute of Technology Madras , Chennai 600036, India
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9
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Prasad SS, Senthilkumar S, Srivastava A, Baskaran S. Iminosugar C-Nitromethyl Glycosides and Divergent Synthesis of Bicyclic Iminosugars. Org Lett 2017; 19:4403-4406. [DOI: 10.1021/acs.orglett.7b02175] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Sure Siva Prasad
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, India
| | | | - Akriti Srivastava
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, India
| | - Sundarababu Baskaran
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, India
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10
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Chinthapally K, Karthik R, Senthilkumar S, Baskaran S. A Short and Efficient Synthesis of Iminosugar 2-Acyl Indolizidine. Chemistry 2016; 23:533-536. [DOI: 10.1002/chem.201604376] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2016] [Indexed: 12/24/2022]
Affiliation(s)
- Kiran Chinthapally
- Department of Chemistry; Indian Institute of Technology Madras; Chennai 600036 India
| | - Reshamina Karthik
- Department of Chemistry; Indian Institute of Technology Madras; Chennai 600036 India
| | | | - Sundarababu Baskaran
- Department of Chemistry; Indian Institute of Technology Madras; Chennai 600036 India
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11
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Lenci E, Innocenti R, Biagioni A, Menchi G, Bianchini F, Trabocchi A. Identification of Novel Human Breast Carcinoma (MDA-MB-231) Cell Growth Modulators from a Carbohydrate-Based Diversity Oriented Synthesis Library. Molecules 2016; 21:molecules21101405. [PMID: 27775632 PMCID: PMC6273552 DOI: 10.3390/molecules21101405] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2016] [Revised: 10/12/2016] [Accepted: 10/15/2016] [Indexed: 01/16/2023] Open
Abstract
The application of a cell-based growth inhibition on a library of skeletally different glycomimetics allowed for the selection of a hexahydro-2H-furo[3,2-b][1,4]oxazine compound as candidate inhibitors of MDA-MB-231 cell growth. Subsequent synthesis of analogue compounds and preliminary biological studies validated the selection of a valuable hit compound with a novel polyhydroxylated structure for the modulation of the breast carcinoma cell cycle mechanism.
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Affiliation(s)
- Elena Lenci
- Department of Chemistry "Ugo Schiff", University of Florence, Via della Lastruccia 13, 50019 Sesto Fiorentino, Florence, Italy.
| | - Riccardo Innocenti
- Department of Chemistry "Ugo Schiff", University of Florence, Via della Lastruccia 13, 50019 Sesto Fiorentino, Florence, Italy.
| | - Alessio Biagioni
- Department of Clinical and Experimental Biomedical Science "Mario Serio", University of Florence, Viale Morgagni 50, 50134 Florence, Italy.
| | - Gloria Menchi
- Department of Chemistry "Ugo Schiff", University of Florence, Via della Lastruccia 13, 50019 Sesto Fiorentino, Florence, Italy.
| | - Francesca Bianchini
- Department of Clinical and Experimental Biomedical Science "Mario Serio", University of Florence, Viale Morgagni 50, 50134 Florence, Italy.
| | - Andrea Trabocchi
- Department of Chemistry "Ugo Schiff", University of Florence, Via della Lastruccia 13, 50019 Sesto Fiorentino, Florence, Italy.
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12
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Lenci E, Menchi G, Trabocchi A. Carbohydrates in diversity-oriented synthesis: challenges and opportunities. Org Biomol Chem 2016; 14:808-25. [DOI: 10.1039/c5ob02253c] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Carbohydrates are attractive building blocks for diversity-oriented synthesis due to their stereochemical diversity and high density of polar functional groups.
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Affiliation(s)
- E. Lenci
- Department of Chemistry “Ugo Schiff”
- University of Florence
- Sesto Fiorentino
- Italy
| | - G. Menchi
- Department of Chemistry “Ugo Schiff”
- University of Florence
- Sesto Fiorentino
- Italy
| | - A. Trabocchi
- Department of Chemistry “Ugo Schiff”
- University of Florence
- Sesto Fiorentino
- Italy
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13
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Banerjee A, Senthilkumar S, Baskaran S. Benzylidene Acetal Protecting Group as Carboxylic Acid Surrogate: Synthesis of Functionalized Uronic Acids and Sugar Amino Acids. Chemistry 2015; 22:902-6. [PMID: 26572799 DOI: 10.1002/chem.201503998] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2015] [Indexed: 02/05/2023]
Abstract
Direct oxidation of the 4,6-O-benzylidene acetal protecting group to C-6 carboxylic acid has been developed that provides an easy access to a wide range of biologically important and synthetically challenging uronic acid and sugar amino acid derivatives in good yields. The RuCl3 -NaIO4 -mediated oxidative cleavage method eliminates protection and deprotection steps and the reaction takes place under mild conditions. The dual role of the benzylidene acetal, as a protecting group and source of carboxylic acid, was exploited in the efficient synthesis of six-carbon sialic acid analogues and disaccharides bearing uronic acids, including glycosaminoglycan analogues.
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Affiliation(s)
- Amit Banerjee
- Department of Chemistry, Indian Institute of Technology Madras, Chennai-, 600036, India
| | | | - Sundarababu Baskaran
- Department of Chemistry, Indian Institute of Technology Madras, Chennai-, 600036, India.
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14
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Macé A, Touchet S, Andres P, Cossío F, Dorcet V, Carreaux F, Carboni B. [3,3]-Sigmatropic Rearrangement/Allylboration/Cyclization Sequence: Enantioenriched Seven-Membered-Ring Carbamates and Ring Contraction to Pyrrolidines. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201509824] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Aurélie Macé
- Institut des Sciences Chimiques de Rennes; UMR 6226 CNRS-Université de Rennes 1; Campus de Beaulieu 35042 Rennes Cedex France
| | - Sabrina Touchet
- Institut des Sciences Chimiques de Rennes; UMR 6226 CNRS-Université de Rennes 1; Campus de Beaulieu 35042 Rennes Cedex France
- AdPueriVitam; Laboratoire BioCIS; Faculté de Pharmacie; Université Paris-Sud; 5 rue J-B Clément 92296 Châtenay-Malabry France
| | - Patricia Andres
- Institut des Sciences Chimiques de Rennes; UMR 6226 CNRS-Université de Rennes 1; Campus de Beaulieu 35042 Rennes Cedex France
- Departamento de Química Orgánica, Facultad de Ciencias; Universidad de Zaragoza; Pedro Cerbuna 12 50009 Zaragoza Spain
| | - Fernando Cossío
- Departamento de Química Orgánica I; Facultad de Química; Universidad del País Vasco/Euskal Herriko Unibertsitatea (UPV/EHU); Donostia International Physics Center (DIPC); P° Manuel Lardizabal 3 20018 San Sebastián/Donostia Spain
| | - Vincent Dorcet
- Institut des Sciences Chimiques de Rennes; UMR 6226 CNRS-Université de Rennes 1; Campus de Beaulieu 35042 Rennes Cedex France
| | - François Carreaux
- Institut des Sciences Chimiques de Rennes; UMR 6226 CNRS-Université de Rennes 1; Campus de Beaulieu 35042 Rennes Cedex France
| | - Bertrand Carboni
- Institut des Sciences Chimiques de Rennes; UMR 6226 CNRS-Université de Rennes 1; Campus de Beaulieu 35042 Rennes Cedex France
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15
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Macé A, Touchet S, Andres P, Cossío F, Dorcet V, Carreaux F, Carboni B. [3,3]-Sigmatropic Rearrangement/Allylboration/Cyclization Sequence: Enantioenriched Seven-Membered-Ring Carbamates and Ring Contraction to Pyrrolidines. Angew Chem Int Ed Engl 2015; 55:1025-9. [DOI: 10.1002/anie.201509824] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2015] [Indexed: 12/25/2022]
Affiliation(s)
- Aurélie Macé
- Institut des Sciences Chimiques de Rennes; UMR 6226 CNRS-Université de Rennes 1; Campus de Beaulieu 35042 Rennes Cedex France
| | - Sabrina Touchet
- Institut des Sciences Chimiques de Rennes; UMR 6226 CNRS-Université de Rennes 1; Campus de Beaulieu 35042 Rennes Cedex France
- AdPueriVitam; Laboratoire BioCIS; Faculté de Pharmacie; Université Paris-Sud; 5 rue J-B Clément 92296 Châtenay-Malabry France
| | - Patricia Andres
- Institut des Sciences Chimiques de Rennes; UMR 6226 CNRS-Université de Rennes 1; Campus de Beaulieu 35042 Rennes Cedex France
- Departamento de Química Orgánica, Facultad de Ciencias; Universidad de Zaragoza; Pedro Cerbuna 12 50009 Zaragoza Spain
| | - Fernando Cossío
- Departamento de Química Orgánica I; Facultad de Química; Universidad del País Vasco/Euskal Herriko Unibertsitatea (UPV/EHU); Donostia International Physics Center (DIPC); P° Manuel Lardizabal 3 20018 San Sebastián/Donostia Spain
| | - Vincent Dorcet
- Institut des Sciences Chimiques de Rennes; UMR 6226 CNRS-Université de Rennes 1; Campus de Beaulieu 35042 Rennes Cedex France
| | - François Carreaux
- Institut des Sciences Chimiques de Rennes; UMR 6226 CNRS-Université de Rennes 1; Campus de Beaulieu 35042 Rennes Cedex France
| | - Bertrand Carboni
- Institut des Sciences Chimiques de Rennes; UMR 6226 CNRS-Université de Rennes 1; Campus de Beaulieu 35042 Rennes Cedex France
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16
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One‐Pot Synthesis of Hydrophobically Modified Iminosugar
C
‐Alkynylglycosides: Facile Synthesis of Polyhydroxy Tetrahydroindolizines. Chemistry 2015; 21:15914-8. [DOI: 10.1002/chem.201503047] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2015] [Indexed: 11/07/2022]
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17
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Lenci E, Menchi G, Guarna A, Trabocchi A. Skeletal Diversity from Carbohydrates: Use of Mannose for the Diversity-Oriented Synthesis of Polyhydroxylated Compounds. J Org Chem 2015; 80:2182-91. [DOI: 10.1021/jo502701c] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Elena Lenci
- Department
of Chemistry “Ugo
Schiff”, University of Florence, via della Lastruccia 13, I-50019 Sesto Fiorentino, Florence, Italy
| | - Gloria Menchi
- Department
of Chemistry “Ugo
Schiff”, University of Florence, via della Lastruccia 13, I-50019 Sesto Fiorentino, Florence, Italy
| | - Antonio Guarna
- Department
of Chemistry “Ugo
Schiff”, University of Florence, via della Lastruccia 13, I-50019 Sesto Fiorentino, Florence, Italy
| | - Andrea Trabocchi
- Department
of Chemistry “Ugo
Schiff”, University of Florence, via della Lastruccia 13, I-50019 Sesto Fiorentino, Florence, Italy
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18
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Tahoori F, Balalaie S, Sheikhnejad R, Sadjadi M, Boloori P. Design and synthesis of anti-cancer cyclopeptides containing triazole skeleton. Amino Acids 2014; 46:1033-46. [PMID: 24420338 DOI: 10.1007/s00726-013-1663-1] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2013] [Accepted: 12/29/2013] [Indexed: 02/05/2023]
Abstract
We describe the design and synthesis of some hypothetical heptapeptides specifically to overcome the neoplastic activity of ras oncogene and their anti-cancer activities were studied. To improve the anti-cancer activity of the synthesized peptides, their structure modifications were done based on a sequential Ugi/Huisgen 1,3-Dipolar cyclization reaction. The cyclopeptides which contained triazole skeleton showed significant anti-cancer activity against cancer cells with mutated ras oncogene such as A549, PC3 and C26 cells. This study clearly shows the importance of triazole skeleton in biological activity of the peptides. It might be possible to overcome the difficulties involved in making complex peptides by employing this elegant chemistry.
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Affiliation(s)
- Fatemeh Tahoori
- Peptide Chemistry Research Center, K. N. Toosi University of Technology, P. O. Box 15875-4416, Tehran, Iran
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Senthilkumar S, Prasad SS, Kumar PS, Baskaran S. A diversity oriented one-pot synthesis of novel iminosugar C-glycosides. Chem Commun (Camb) 2014; 50:1549-51. [DOI: 10.1039/c3cc48370c] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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20
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An efficient synthesis of aldohexose-derived piperidine nitrones: precursors of piperidine iminosugars. Molecules 2013; 18:6021-34. [PMID: 23698053 PMCID: PMC6270483 DOI: 10.3390/molecules18056021] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2013] [Revised: 05/15/2013] [Accepted: 05/17/2013] [Indexed: 11/17/2022] Open
Abstract
d-Glucopyranose-derived and l-idopyranose-derived piperidine nitrones were synthesized in good overall yields through six-step reaction sequence starting from readily available 2,3,4,6-tetra-O-benzyl-d-glucopyranose. The method is efficient and could be general for the synthesis of aldohexose-derived piperidine nitrones which are precursors of piperidine iminosugars.
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Ramezanpour S, Balalaie S, Rominger F, Bijanzadeh HR. An efficient and diastereoselective synthesis of hydrazino amides via a novel one-pot three-component reaction. Tetrahedron 2013. [DOI: 10.1016/j.tet.2013.02.056] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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22
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Ryan JH, Hyland C, Meyer AG, Smith JA, Yin J. Seven-Membered Rings. PROGRESS IN HETEROCYCLIC CHEMISTRY 2012. [DOI: 10.1016/b978-0-08-096807-0.00016-6] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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23
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Banerjee A, Kumar PS, Baskaran S. A Lewis acid initiated intramolecular cyclization of benzylidene acetal with an azide functional group: novel synthesis of oxazolines and oxazines. Chem Commun (Camb) 2011; 47:12218-20. [DOI: 10.1039/c1cc14722f] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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