1
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Wang G, Ho CC, Zhou Z, Hao YJ, Lv J, Jin J, Jin Z, Chi YR. Site-Selective C-O Bond Editing of Unprotected Saccharides. J Am Chem Soc 2024; 146:824-832. [PMID: 38123470 DOI: 10.1021/jacs.3c10963] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2023]
Abstract
Glucose and its polyhydroxy saccharide analogs are complex molecules that serve as essential structural components in biomacromolecules, natural products, medicines, and agrochemicals. Within the expansive realm of saccharides, a significant area of research revolves around chemically transforming naturally abundant saccharide units to intricate or uncommon molecules such as oligosaccharides or rare sugars. However, partly due to the presence of multiple hydroxyl groups with similar reactivities and the structural complexities arising from stereochemistry, the transformation of unprotected sugars to the desired target molecules remains challenging. One such formidable challenge lies in the efficient and selective activation and modification of the C-O bonds in saccharides. In this study, we disclose a modular 2-fold "tagging-editing" strategy that allows for direct and selective editing of C-O bonds of saccharides, enabling rapid preparation of valuable molecules such as rare sugars and drug derivatives. The first step, referred to as "tagging", involves catalytic site-selective installation of a photoredox active carboxylic ester group to a specific hydroxyl unit of an unprotected sugar. The second step, namely, "editing", features a C-O bond cleavage to form a carbon radical intermediate that undergoes further transformations such as C-H and C-C bond formations. Our strategy constitutes the most effective and shortest route in direct transformation and modification of medicines and other molecules bearing unprotected sugars.
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Affiliation(s)
- Guanjie Wang
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang, 550025, China
- School of Chemistry, Chemical Engineering, and Biotechnology, Nanyang Technological University, Singapore, 637371, Singapore
| | - Chang Chin Ho
- School of Chemistry, Chemical Engineering, and Biotechnology, Nanyang Technological University, Singapore, 637371, Singapore
| | - Zhixu Zhou
- School of Chemistry, Chemical Engineering, and Biotechnology, Nanyang Technological University, Singapore, 637371, Singapore
| | - Yong-Jia Hao
- School of Chemistry, Chemical Engineering, and Biotechnology, Nanyang Technological University, Singapore, 637371, Singapore
| | - Jie Lv
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang, 550025, China
| | - Jiamiao Jin
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang, 550025, China
| | - Zhichao Jin
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang, 550025, China
| | - Yonggui Robin Chi
- National Key Laboratory of Green Pesticide, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang, 550025, China
- School of Chemistry, Chemical Engineering, and Biotechnology, Nanyang Technological University, Singapore, 637371, Singapore
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2
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Yamatsugu K, Kanai M. Catalytic Approaches to Chemo- and Site-Selective Transformation of Carbohydrates. Chem Rev 2023; 123:6793-6838. [PMID: 37126370 DOI: 10.1021/acs.chemrev.2c00892] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
Carbohydrates are a fundamental unit playing pivotal roles in all the biological processes. It is thus essential to develop methods for synthesizing, functionalizing, and manipulating carbohydrates for further understanding of their functions and the creation of sugar-based functional materials. It is, however, not trivial to develop such methods, since carbohydrates are densely decorated with polar and similarly reactive hydroxy groups in a stereodefined manner. New approaches to chemo- and site-selective transformations of carbohydrates are, therefore, of great significance for revolutionizing sugar chemistry to enable easier access to sugars of interest. This review begins with a brief overview of the innate reactivity of hydroxy groups of carbohydrates. It is followed by discussions about catalytic approaches to enhance, override, or be orthogonal to the innate reactivity for the transformation of carbohydrates. This review avoids making a list of chemo- and site-selective reactions, but rather focuses on summarizing the concept behind each reported transformation. The literature references were sorted into sections based on the underlying ideas of the catalytic approaches, which we hope will help readers have a better sense of the current state of chemistry and develop innovative ideas for the field.
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Affiliation(s)
- Kenzo Yamatsugu
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Motomu Kanai
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
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3
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Ramsay-Burrough S, Marron DP, Armstrong KC, Del Castillo TJ, Zare RN, Waymouth RM. Mechanism-Guided Design of Robust Palladium Catalysts for Selective Aerobic Oxidation of Polyols. J Am Chem Soc 2023; 145:2282-2293. [PMID: 36657018 DOI: 10.1021/jacs.2c10667] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
The palladium complex [(L1)Pd(μ-OAc)]2[OTf]2 (L1 = neocuproine) is a selective catalyst for the aerobic oxidation of vicinal polyols to α-hydroxyketones, but competitive oxidation of the ligand methyl groups limits the turnover number and necessitates high Pd loadings. Replacement of the neocuproine ligand with 2,2'-biquinoline ligands was investigated as a strategy to improve catalyst performance and explore the relationship between ligand structure and reactivity. Evaluation of [(L2)Pd(μ-OAc)]2[OTf]2 (L2 = 2,2'-biquinoline) as a catalyst for aerobic alcohol oxidation revealed a threefold enhancement in turnover number relative to the neocuproine congener, but a much slower rate. Mechanistic studies indicated that the slow rates observed with L2 were a consequence of precipitation of an insoluble trinuclear palladium species─(L2Pd)3(μ-O)22+─formed during catalysis and characterized by high-resolution electrospray ionization mass spectrometry. Density functional theory was used to predict that a sterically modified biquinoline ligand, L3 = 7,7'-di-tert-butyl-2,2'-biquinoline, would disfavor the formation of the trinuclear (LPd)3(μ-O)22+ species. This design strategy was validated as catalytic aerobic oxidation with [(L3)Pd(μ-OAc)]2[OTf]2 is both robust and rapid, marrying the kinetics of the parent L1-supported system with the high aerobic turnover numbers of the L2-supported system. Changes in ligand structure were also found to modulate regioselectivity in the oxidation of complex glycoside substrates, providing new insights into structure-selectivity relationships with this class of catalysts.
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Affiliation(s)
| | - Daniel P Marron
- Department of Chemistry, Stanford University, Stanford, California 94305, United States
| | - Keith C Armstrong
- Department of Chemistry, Stanford University, Stanford, California 94305, United States
| | - Trevor J Del Castillo
- Department of Chemistry, Stanford University, Stanford, California 94305, United States
| | - Richard N Zare
- Department of Chemistry, Stanford University, Stanford, California 94305, United States
| | - Robert M Waymouth
- Department of Chemistry, Stanford University, Stanford, California 94305, United States
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4
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Exploiting photoredox catalysis for carbohydrate modification through C–H and C–C bond activation. Nat Rev Chem 2022; 6:782-805. [PMID: 37118094 DOI: 10.1038/s41570-022-00422-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/12/2022] [Indexed: 11/09/2022]
Abstract
Photoredox catalysis has recently emerged as a powerful synthetic platform for accessing complex chemical structures through non-traditional bond disconnection strategies that proceed through free-radical intermediates. Such synthetic strategies have been used for a range of organic transformations; however, in carbohydrate chemistry they have primarily been applied to the generation of oxocarbenium ion intermediates in the ubiquitous glycosylation reaction. In this Review, we present more intricate light-induced synthetic strategies to modify native carbohydrates through homolytic C-H and C-C bond cleavage. These strategies allow access to glycans and glycoconjugates with profoundly altered carbohydrate skeletons, which are challenging to obtain through conventional synthetic means. Carbohydrate derivatives with such structural motifs represent a broad class of natural products integral to numerous biochemical processes and can be found in active pharmaceutical substances. Here we present progress made in C-H and C-C bond activation of carbohydrates through photoredox catalysis, focusing on the operational mechanisms and the scope of the described methodologies.
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5
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Zhang J, Reintjens NRM, Dhineshkumar J, Witte MD, Minnaard AJ. Site-Selective Dehydroxy-Chlorination of Secondary Alcohols in Unprotected Glycosides. Org Lett 2022; 24:5339-5344. [PMID: 35848103 PMCID: PMC9490796 DOI: 10.1021/acs.orglett.2c01992] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
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To circumvent protecting groups, the site-selective modification
of unprotected glycosides is intensively studied. We show that site-selective
oxidation, followed by treatment of the corresponding trityl hydrazone
with tert-butyl hypochlorite and a H atom donor provides
an effective way to introduce a chloride substituent in a variety
of mono- and disaccharides. The stereoselectivity can be steered,
and a new geminal dichlorination reaction is described as well. This
strategy challenges existing methods that lead to overchlorination.
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Affiliation(s)
- Ji Zhang
- Stratingh Institute for Chemistry, University of Groningen, Groningen 9747 AG, The Netherlands
| | - Niels R. M. Reintjens
- Stratingh Institute for Chemistry, University of Groningen, Groningen 9747 AG, The Netherlands
| | - Jayaraman Dhineshkumar
- Stratingh Institute for Chemistry, University of Groningen, Groningen 9747 AG, The Netherlands
| | - Martin D. Witte
- Stratingh Institute for Chemistry, University of Groningen, Groningen 9747 AG, The Netherlands
| | - Adriaan J. Minnaard
- Stratingh Institute for Chemistry, University of Groningen, Groningen 9747 AG, The Netherlands
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6
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Li X, Wu J, Tang W. General Strategy for the Synthesis of Rare Sugars via Ru(II)-Catalyzed and Boron-Mediated Selective Epimerization of 1,2- trans-Diols to 1,2- cis-Diols. J Am Chem Soc 2022; 144:3727-3736. [PMID: 35168319 DOI: 10.1021/jacs.1c13399] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Human glycans are primarily composed of nine common sugar building blocks. On the other hand, several hundred monosaccharides have been discovered in bacteria and most of them are not readily available. The ability to access these rare sugars and the corresponding glycoconjugates can facilitate the studies of various fundamentally important biological processes in bacteria, including interactions between microbiota and the human host. Many rare sugars also exist in a variety of natural products and pharmaceutical reagents with significant biological activities. Although several methods have been developed for the synthesis of rare monosaccharides, most of them involve lengthy steps. Herein, we report an efficient and general strategy that can provide access to rare sugars from commercially available common monosaccharides via a one-step Ru(II)-catalyzed and boron-mediated selective epimerization of 1,2-trans-diols to 1,2-cis-diols. The formation of boronate esters drives the equilibrium toward 1,2-cis-diol products, which can be immediately used for further selective functionalization and glycosylation. The utility of this strategy was demonstrated by the efficient construction of glycoside skeletons in natural products or bioactive compounds.
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Affiliation(s)
- Xiaolei Li
- School of Pharmacy, University of Wisconsin-Madison, Madison, Wisconsin 53705, United States
| | - Jicheng Wu
- School of Pharmacy, University of Wisconsin-Madison, Madison, Wisconsin 53705, United States
| | - Weiping Tang
- School of Pharmacy, University of Wisconsin-Madison, Madison, Wisconsin 53705, United States.,Department of Chemistry, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States
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7
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Gorelik DJ, Dimakos V, Adrianov T, Taylor MS. Photocatalytic, site-selective oxidations of carbohydrates. Chem Commun (Camb) 2021; 57:12135-12138. [PMID: 34723300 DOI: 10.1039/d1cc05124e] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Site-selective oxidations of carbohydrates, employing acridinium photocatalysis and quinuclidine hydrogen atom transfer catalysis, are presented. Protocols have been developed for oxidations of all-equatorial carbohydrates as well as those containing cis-1,2-diols. Site-selectivity reflects the relative rates of hydrogen atom transfer from the carbohydrate C-H bonds, and can be enhanced using a phosphate hydrogen-bonding or boronic acid catalyst.
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Affiliation(s)
- Daniel J Gorelik
- Department of Chemistry, University of Toronto, 80 St. George St, Toronto, ON M5S 3H6, Canada.
| | - Victoria Dimakos
- Department of Chemistry, University of Toronto, 80 St. George St, Toronto, ON M5S 3H6, Canada.
| | - Timur Adrianov
- Department of Chemistry, University of Toronto, 80 St. George St, Toronto, ON M5S 3H6, Canada.
| | - Mark S Taylor
- Department of Chemistry, University of Toronto, 80 St. George St, Toronto, ON M5S 3H6, Canada.
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8
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Gorelik DJ, Turner JA, Virk TS, Foucher DA, Taylor MS. Site- and Stereoselective C-H Alkylations of Carbohydrates Enabled by Cooperative Photoredox, Hydrogen Atom Transfer, and Organotin Catalysis. Org Lett 2021; 23:5180-5185. [PMID: 34133881 DOI: 10.1021/acs.orglett.1c01718] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Diorganotin dihalides act as cocatalysts for site-selective and stereoselective couplings of diol-containing carbohydrates with electron-deficient alkenes in the presence of an Ir(III) photoredox catalyst and quinuclidine, a hydrogen atom transfer mediator. Quantum-chemical calculations support a proposed mechanism involving the formation of a cyclic stannylene acetal intermediate that shows enhanced reactivity toward hydrogen atom abstraction by the quinuclidinium radical cation. Addition of the carbon-centered radical to the alkene partner results in C-alkylation of the carbohydrate substrate.
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Affiliation(s)
- Daniel J Gorelik
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6, Canada
| | - Julia A Turner
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6, Canada
| | - Tarunpreet S Virk
- Department of Chemistry and Biology, Ryerson University, 350 Victoria Street, Toronto, Ontario M5B 2K3, Canada
| | - Daniel A Foucher
- Department of Chemistry and Biology, Ryerson University, 350 Victoria Street, Toronto, Ontario M5B 2K3, Canada
| | - Mark S Taylor
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6, Canada
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9
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Wan IC(S, Hamlin TA, Eisink NNHM, Marinus N, Boer C, Vis CA, Codée JDC, Witte MD, Minnaard AJ, Bickelhaupt FM. On the Origin of Regioselectivity in Palladium‐Catalyzed Oxidation of Glucosides. European J Org Chem 2021. [DOI: 10.1002/ejoc.202001453] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Ieng Chim (Steven) Wan
- Stratingh Institute for Chemistry University of Groningen Nijenborgh 7 9747 AG Groningen, The Netherlands
- Department of Theoretical Chemistry Amsterdam Institute of Molecular and Life Sciences (AIMMS) Institution Amsterdam Center for Multiscale Modeling (ACMM) Vrije Universiteit Amsterdam De Boelelaan 1083 1081 HV Amsterdam, The Netherlands
| | - Trevor A. Hamlin
- Department of Theoretical Chemistry Amsterdam Institute of Molecular and Life Sciences (AIMMS) Institution Amsterdam Center for Multiscale Modeling (ACMM) Vrije Universiteit Amsterdam De Boelelaan 1083 1081 HV Amsterdam, The Netherlands
| | - Niek N. H. M. Eisink
- Stratingh Institute for Chemistry University of Groningen Nijenborgh 7 9747 AG Groningen, The Netherlands
| | - Nittert Marinus
- Stratingh Institute for Chemistry University of Groningen Nijenborgh 7 9747 AG Groningen, The Netherlands
| | - Casper Boer
- Leiden Institute of Chemistry Leiden University Einsteinweg 55 2333 CC Leiden, The Netherlands
| | - Christopher A. Vis
- Leiden Institute of Chemistry Leiden University Einsteinweg 55 2333 CC Leiden, The Netherlands
| | - Jeroen D. C. Codée
- Leiden Institute of Chemistry Leiden University Einsteinweg 55 2333 CC Leiden, The Netherlands
| | - Martin D. Witte
- Stratingh Institute for Chemistry University of Groningen Nijenborgh 7 9747 AG Groningen, The Netherlands
| | - Adriaan J. Minnaard
- Stratingh Institute for Chemistry University of Groningen Nijenborgh 7 9747 AG Groningen, The Netherlands
| | - F. Matthias Bickelhaupt
- Department of Theoretical Chemistry Amsterdam Institute of Molecular and Life Sciences (AIMMS) Institution Amsterdam Center for Multiscale Modeling (ACMM) Vrije Universiteit Amsterdam De Boelelaan 1083 1081 HV Amsterdam, The Netherlands
- Institute for Molecules and Materials (IMM) Radboud University Heyendaalseweg 135 6525 AJ Nijmegen, The Netherlands
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10
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Marinus N, Tahiri N, Duca M, Mouthaan LMCM, Bianca S, van den Noort M, Poolman B, Witte MD, Minnaard AJ. Stereoselective Protection-Free Modification of 3-Keto-saccharides. Org Lett 2020; 22:5622-5626. [PMID: 32635733 PMCID: PMC7372562 DOI: 10.1021/acs.orglett.0c01986] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2020] [Indexed: 01/15/2023]
Abstract
Unprotected 3-keto-saccharides have become readily accessible via site-selective oxidation, but their protection-free functionalization is relatively unexplored. Here we show that protecting groups are obsolete in a variety of stereoselective modifications of our model substrate methyl α-glucopyranoside. This allows the preparation of rare sugars and the installation of click handles and reactive groups. To showcase the applicability of the methodology, maltoheptaose has been converted into a chemical probe, and the rare sugar evalose has been synthesized.
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Affiliation(s)
- Nittert Marinus
- Stratingh
Institute for Chemistry, University of Groningen, Groningen 9747 AG, The Netherlands
| | - Nabil Tahiri
- Stratingh
Institute for Chemistry, University of Groningen, Groningen 9747 AG, The Netherlands
| | - Margherita Duca
- Stratingh
Institute for Chemistry, University of Groningen, Groningen 9747 AG, The Netherlands
| | - L. M. C. Marc Mouthaan
- Stratingh
Institute for Chemistry, University of Groningen, Groningen 9747 AG, The Netherlands
| | - Simona Bianca
- Stratingh
Institute for Chemistry, University of Groningen, Groningen 9747 AG, The Netherlands
| | - Marco van den Noort
- Department
of Biochemistry, Groningen Biochemistry & Biotechnology Institute, University of Groningen, Groningen 9747 AB, The Netherlands
| | - Bert Poolman
- Department
of Biochemistry, Groningen Biochemistry & Biotechnology Institute, University of Groningen, Groningen 9747 AB, The Netherlands
| | - Martin D. Witte
- Stratingh
Institute for Chemistry, University of Groningen, Groningen 9747 AG, The Netherlands
| | - Adriaan J. Minnaard
- Stratingh
Institute for Chemistry, University of Groningen, Groningen 9747 AG, The Netherlands
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11
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Borrell M, Gil-Caballero S, Bietti M, Costas M. Site-Selective and Product Chemoselective Aliphatic C–H Bond Hydroxylation of Polyhydroxylated Substrates. ACS Catal 2020. [DOI: 10.1021/acscatal.9b05423] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Margarida Borrell
- Institut de Química Computacional i Catàlisi (IQCC) and Departament de Química, Universitat de Girona, Campus Montilivi, Girona E-17071, Catalonia Spain
| | - Sergio Gil-Caballero
- Serveis Tècnics de Recerca (NMR), Universitat de Girona, Parc científic i tecnològic de la UdG, Pic de Peguera 15, Girona E-17003, Catalonia, Spain
| | - Massimo Bietti
- Dipartimento di Scienze e Tecnologie Chimiche, Università “Tor Vergata”, Via della Ricerca Scientifica, 1 I-00133 Rome, Italy
| | - Miquel Costas
- Institut de Química Computacional i Catàlisi (IQCC) and Departament de Química, Universitat de Girona, Campus Montilivi, Girona E-17071, Catalonia Spain
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12
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Wang Y, Carder HM, Wendlandt AE. Synthesis of rare sugar isomers through site-selective epimerization. Nature 2020; 578:403-408. [DOI: 10.1038/s41586-020-1937-1] [Citation(s) in RCA: 84] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2019] [Accepted: 01/03/2020] [Indexed: 12/22/2022]
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13
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Kuwano S, Hosaka Y, Arai T. Chiral Benzazaborole‐Catalyzed Regioselective Sulfonylation of Unprotected Carbohydrate Derivatives. Chemistry 2019; 25:12920-12923. [DOI: 10.1002/chem.201903443] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Indexed: 11/08/2022]
Affiliation(s)
- Satoru Kuwano
- Soft Molecular Activation Research Center (SMARC)Chiba Iodine Resource Innovation Center (CIRIC)Molecular Chirality Research Center (MCRC)Synthetic Organic ChemistryDepartment of ChemistryGraduate School of ScienceChiba University 1–33 Yayoi, Inage Chiba 263-8522 Japan
| | - Yusei Hosaka
- Soft Molecular Activation Research Center (SMARC)Chiba Iodine Resource Innovation Center (CIRIC)Molecular Chirality Research Center (MCRC)Synthetic Organic ChemistryDepartment of ChemistryGraduate School of ScienceChiba University 1–33 Yayoi, Inage Chiba 263-8522 Japan
| | - Takayoshi Arai
- Soft Molecular Activation Research Center (SMARC)Chiba Iodine Resource Innovation Center (CIRIC)Molecular Chirality Research Center (MCRC)Synthetic Organic ChemistryDepartment of ChemistryGraduate School of ScienceChiba University 1–33 Yayoi, Inage Chiba 263-8522 Japan
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14
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Shimada N, Nakamura Y, Ochiai T, Makino K. Catalytic Activation of Cis-Vicinal Diols by Boronic Acids: Site-Selective Acylation of Carbohydrates. Org Lett 2019; 21:3789-3794. [DOI: 10.1021/acs.orglett.9b01231] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Naoyuki Shimada
- Laboratory of Organic Chemistry for Drug Development and Medical Research Laboratories, Department of Pharmaceutical Sciences, Kitasato University, Tokyo 108-8641, Japan
| | - Yuki Nakamura
- Laboratory of Organic Chemistry for Drug Development and Medical Research Laboratories, Department of Pharmaceutical Sciences, Kitasato University, Tokyo 108-8641, Japan
| | - Takayuki Ochiai
- Laboratory of Organic Chemistry for Drug Development and Medical Research Laboratories, Department of Pharmaceutical Sciences, Kitasato University, Tokyo 108-8641, Japan
| | - Kazuishi Makino
- Laboratory of Organic Chemistry for Drug Development and Medical Research Laboratories, Department of Pharmaceutical Sciences, Kitasato University, Tokyo 108-8641, Japan
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15
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Dimakos V, Su HY, Garrett GE, Taylor MS. Site-Selective and Stereoselective C–H Alkylations of Carbohydrates via Combined Diarylborinic Acid and Photoredox Catalysis. J Am Chem Soc 2019; 141:5149-5153. [DOI: 10.1021/jacs.9b01531] [Citation(s) in RCA: 75] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Victoria Dimakos
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6, Canada
| | - Hsin Y. Su
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6, Canada
| | - Graham E. Garrett
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6, Canada
| | - Mark S. Taylor
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6, Canada
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16
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Ligand-controlled, transition-metal catalyzed site-selective modification of glycosides. Carbohydr Res 2019; 474:16-33. [DOI: 10.1016/j.carres.2019.01.006] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2018] [Revised: 12/21/2018] [Accepted: 01/10/2019] [Indexed: 12/13/2022]
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17
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Dimakos V, Taylor MS. Site-Selective Functionalization of Hydroxyl Groups in Carbohydrate Derivatives. Chem Rev 2018; 118:11457-11517. [DOI: 10.1021/acs.chemrev.8b00442] [Citation(s) in RCA: 148] [Impact Index Per Article: 24.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Victoria Dimakos
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, ON M5S 3H6, Canada
| | - Mark S. Taylor
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, ON M5S 3H6, Canada
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18
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Hazra S, Martins NM, Mahmudov K, Zubkov FI, Guedes da Silva MFC, Pombeiro AJ. A tetranuclear diphenyltin(IV) complex and its catalytic activity in the aerobic Baeyer-Villiger oxidation of cyclohexanone. J Organomet Chem 2018. [DOI: 10.1016/j.jorganchem.2017.12.040] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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19
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20
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Affiliation(s)
- Kevin Chung
- Department of Chemistry, Stanford University, Stanford, 94305 California, United States
| | - Robert M. Waymouth
- Department of Chemistry, Stanford University, Stanford, 94305 California, United States
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21
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Eisink NNHM, Lohse J, Witte MD, Minnaard AJ. Regioselective oxidation of unprotected 1,4 linked glucans. Org Biomol Chem 2016; 14:4859-64. [PMID: 27159790 DOI: 10.1039/c6ob00608f] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Palladium-catalyzed alcohol oxidation allows the chemo- and regioselective modification of unprotected 1,4 linked glucans. This is demonstrated in the two-step bisfunctionalization of 1,4 linked glucans up to the 7-mer. Introduction of an anomeric azide is followed by a highly regioselective mono-oxidation of the terminal C3-OH functionality. The resulting orthogonal bis-functionalized oligosaccharides are a viable alternative to PEG-spacers as demonstrated in the conjugation of a cysteine mutant of 4-oxalocrotonate tautomerase with biotin.
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Affiliation(s)
- Niek N H M Eisink
- Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 7, 9747 AG Groningen, The Netherlands.
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22
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Muramatsu W. Recent Advances in the Regioselective Functionalization of Carbohydrates Using Non-Enzymatic Catalysts. TRENDS GLYCOSCI GLYC 2016. [DOI: 10.4052/tigg.1502.1j] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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23
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Jäger M, Minnaard AJ. Regioselective modification of unprotected glycosides. Chem Commun (Camb) 2016; 52:656-64. [DOI: 10.1039/c5cc08199h] [Citation(s) in RCA: 64] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The regioselective modification of unprotected glycosides represents shortcuts in carbohydrate chemistry and enables efficient routes to complex derivatives.
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Affiliation(s)
- Manuel Jäger
- Stratingh Institute for Chemistry
- University of Groningen
- 9747 AG Groningen
- The Netherlands
| | - Adriaan J. Minnaard
- Stratingh Institute for Chemistry
- University of Groningen
- 9747 AG Groningen
- The Netherlands
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24
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Muramatsu W. Recent Advances in the Regioselective Functionalization of Carbohydrates Using Non-Enzymatic Catalysts. TRENDS GLYCOSCI GLYC 2016. [DOI: 10.4052/tigg.1502.1e] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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25
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Martins LMDRS, Hazra S, Guedes da Silva MFC, Pombeiro AJL. A sulfonated Schiff base dimethyltin(iv) coordination polymer: synthesis, characterization and application as a catalyst for ultrasound- or microwave-assisted Baeyer–Villiger oxidation under solvent-free conditions. RSC Adv 2016. [DOI: 10.1039/c6ra14689a] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The sulfonated Schiff base dimethyltin(iv) coordination polymer is an efficient heterogeneous catalyst for the peroxidative Baeyer–Villiger oxidation of ketones, under ultrasound or microwave irradiation and solvent- and additive-free conditions.
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Affiliation(s)
| | - Susanta Hazra
- Centro de Química Estrutural
- Instituto Superior Técnico
- Universidade de Lisboa
- Lisboa
- Portugal
| | | | - Armando J. L. Pombeiro
- Centro de Química Estrutural
- Instituto Superior Técnico
- Universidade de Lisboa
- Lisboa
- Portugal
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26
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Sayama S. Synthesis of Nitriles from Aldehydes with Trimethylphenylammonium Tribromide and Ammonium Acetate. HETEROCYCLES 2016. [DOI: 10.3987/com-16-13542] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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27
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Taylor MS. Catalyst-Controlled, Regioselective Reactions of Carbohydrate Derivatives. SITE-SELECTIVE CATALYSIS 2015; 372:125-55. [DOI: 10.1007/128_2015_656] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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