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Kumar M, Reddy TR, Gurawa A, Kashyap S. Copper(ii)-catalyzed stereoselective 1,2-addition vs. Ferrier glycosylation of "armed" and "disarmed" glycal donors. Org Biomol Chem 2020; 18:4848-4862. [PMID: 32608448 DOI: 10.1039/d0ob01042a] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Selective activation of "armed' and ''disarmed" glycal donors enabling the stereo-controlled glycosylations by employing Cu(ii)-catalyst as the promoter has been realized. The distinctive stereochemical outcome in the process is mainly influenced by the presence of diverse protecting groups on the donor and the solvent system employed. The protocol is compatible with a variety of aglycones including carbohydrates, amino acids, and natural products to access deoxy-glycosides and glycoconjugates with high α-anomeric selectivity. Notably, the synthetic practicality of the method is amply verified for the stereoselective assembling of trisaccharides comprising 2-deoxy components. Mechanistic studies involving deuterated experiments validate the syn-diastereoselective 1,2-addition of acceptors on the double bond of armed donors.
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Affiliation(s)
- Manoj Kumar
- Carbohydrate Chemistry Research Laboratory (CCRL), Department of Chemistry, Malaviya National Institute of Technology (MNIT), Jaipur-302017, India.
| | - Thurpu Raghavender Reddy
- Carbohydrate Chemistry Research Laboratory (CCRL), Department of Chemistry, Malaviya National Institute of Technology (MNIT), Jaipur-302017, India.
| | - Aakanksha Gurawa
- Carbohydrate Chemistry Research Laboratory (CCRL), Department of Chemistry, Malaviya National Institute of Technology (MNIT), Jaipur-302017, India.
| | - Sudhir Kashyap
- Carbohydrate Chemistry Research Laboratory (CCRL), Department of Chemistry, Malaviya National Institute of Technology (MNIT), Jaipur-302017, India.
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Kimura T, Takahashi D, Toshima K. Glycosylations of Glycals using N-Iodosuccinimide (NIS) and Phosphorus Compounds for Syntheses of 2-Iodo- and 2-Deoxyglycosides. J Org Chem 2015; 80:9552-62. [PMID: 26375399 DOI: 10.1021/acs.joc.5b01542] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
The glycosylations of glycals and alcohols using N-iodosuccinimide (NIS) and a catalytic amount of PPh3 effectively proceeded under mild conditions to provide the corresponding 2-deoxy-2-iodoglycosides in high yields. The reactivity of the iodoglycosylations with PPh3 significantly increased in comparison to that using NIS alone as an activator. In addition, the glycosylations of glycals and alcohols using catalytic amounts of NIS and P(OPh)3 were effectively realized to give the corresponding 2-deoxyglycosides in high yields.
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Affiliation(s)
- Tomoya Kimura
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University , 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
| | - Daisuke Takahashi
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University , 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
| | - Kazunobu Toshima
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University , 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
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Gomez AM, Lobo F, Miranda S, Lopez JC. A Survey of Recent Synthetic Applications of 2,3-Dideoxy-Hex-2-enopyranosides. Molecules 2015; 20:8357-94. [PMID: 26007170 PMCID: PMC6272535 DOI: 10.3390/molecules20058357] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2015] [Revised: 05/04/2015] [Accepted: 05/05/2015] [Indexed: 12/03/2022] Open
Abstract
Unsaturated carbohydrate derivatives are useful intermediates in synthetic transformations leading to a variety of compounds. The aim of this review is to highlight the rich chemistry of ∆-2,3 unsaturated pyranosides, emphasizing the variety of transformations that have been carried out in these substrates during the last decade.
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Affiliation(s)
- Ana M Gomez
- Instituto de Química Orgánica General (IQOG-CSIC), Juan de la Cierva 3, 28006 Madrid, Spain.
| | - Fernando Lobo
- Instituto de Química Orgánica General (IQOG-CSIC), Juan de la Cierva 3, 28006 Madrid, Spain.
| | - Silvia Miranda
- Instituto de Química Orgánica General (IQOG-CSIC), Juan de la Cierva 3, 28006 Madrid, Spain.
| | - J Cristobal Lopez
- Instituto de Química Orgánica General (IQOG-CSIC), Juan de la Cierva 3, 28006 Madrid, Spain.
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Devari S, Kumar M, Deshidi R, Rizvi M, Shah BA. A general metal-free approach for the stereoselective synthesis of C-glycals from unactivated alkynes. Beilstein J Org Chem 2014; 10:2649-53. [PMID: 25550726 PMCID: PMC4273296 DOI: 10.3762/bjoc.10.277] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2014] [Accepted: 11/01/2014] [Indexed: 12/27/2022] Open
Abstract
A novel metal-free strategy for a rapid and α-selctive C-alkynylation of glycals was developed. The reaction utilizes TMSOTf as a promoter to generate in situ trimethylsilylacetylene for C-alkynylation. Thanks to this methodology, we can access C-glycosides in a single step from a variety of acetylenes , i.e., arylacetylenes and most importantly aliphatic alkynes.
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Affiliation(s)
- Shekaraiah Devari
- Academy of Scientific and Innovative Research (AcSIR); Natural Product Microbes, CSIR-Indian Institute of Integrative Medicine, Canal Road, Jammu -Tawi, 180001, India
| | - Manjeet Kumar
- Academy of Scientific and Innovative Research (AcSIR); Natural Product Microbes, CSIR-Indian Institute of Integrative Medicine, Canal Road, Jammu -Tawi, 180001, India
| | - Ramesh Deshidi
- Academy of Scientific and Innovative Research (AcSIR); Natural Product Microbes, CSIR-Indian Institute of Integrative Medicine, Canal Road, Jammu -Tawi, 180001, India
| | - Masood Rizvi
- Department of Chemistry, University of Kashmir, 190006, India
| | - Bhahwal Ali Shah
- Academy of Scientific and Innovative Research (AcSIR); Natural Product Microbes, CSIR-Indian Institute of Integrative Medicine, Canal Road, Jammu -Tawi, 180001, India
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Lejkowski M, Banerjee P, Raabe G, Runsink J, Gais HJ. Spiro- and Bicycloannulation of Sulfoximine-Substituted 2-Hydroxy-dihydropyrans: Enantioselective Synthesis of Spiroketals, Spiroethers, and Oxabicycles and Structure of Dihydropyran Oxocarbenium Ions. European J Org Chem 2013. [DOI: 10.1002/ejoc.201301461] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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6
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Ranade SC, Demchenko AV. Mechanism of Chemical Glycosylation: Focus on the Mode of Activation and Departure of Anomeric Leaving Groups. J Carbohydr Chem 2013. [DOI: 10.1080/07328303.2012.749264] [Citation(s) in RCA: 76] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Sneha C. Ranade
- a Department of Chemistry and Biochemistry , University of Missouri , St. Louis , MO , 63121 , USA
| | - Alexei V. Demchenko
- a Department of Chemistry and Biochemistry , University of Missouri , St. Louis , MO , 63121 , USA
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Dar AR, Aga MA, Kumar B, Yousuf SK, Taneja SC. Regioselective monochloro substitution in carbohydrates and non-sugar alcohols via Mitsunobu reaction: applications in the synthesis of reboxetine. Org Biomol Chem 2013; 11:6195-207. [DOI: 10.1039/c3ob40853a] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Freitas JC, Couto TR, Paulino AA, de Freitas Filho JR, Malvestiti I, Oliveira RA, Menezes PH. Stereoselective synthesis of pseudoglycosides catalyzed by TeCl4 under mild conditions. Tetrahedron 2012. [DOI: 10.1016/j.tet.2012.09.073] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Freitas JC, Couto TR, Paulino AA, de Freitas Filho JR, Malvestiti I, Oliveira RA, Menezes PH. Stereoselective synthesis of pseudoglycosides catalyzed by TeCl4 under mild conditions. Tetrahedron 2012. [DOI: 10.1016/j.tet.2012.07.070] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Reddy YS, Lahiri R, Vankar YD. Palladium-Catalyzed Improved Regio- and Stereoselective O-Glycosylation of D-Glucal-Derived β- and α-Vinyl Oxiranes. European J Org Chem 2012. [DOI: 10.1002/ejoc.201200242] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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