1
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Azeem MZ, Dubey MS, Islam MSA, Mandal PK. An Open-Air Palladium-Catalyzed Stereoselective O-Glycosylation of Glycals via in-situ Generation of gem-Disubstituted Methanols from p-Quinone Methides. Chem Asian J 2024; 19:e202301013. [PMID: 38133606 DOI: 10.1002/asia.202301013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Revised: 12/21/2023] [Accepted: 12/22/2023] [Indexed: 12/23/2023]
Abstract
We devised a palladium-catalyzed α-stereoselective glycosylation that incorporates oxygen via in-situ generation of gem-disubstituted methanols from p-quinone methides to access 2,3-unsaturated gem-diarylmethyl O-glycosides under open-air atmosphere at room temperature. Advantages of this environmentally friendly strategy include the absence of additives and ligands, using water as the green source of oxygen, mildest, operationally simple, exhibiting a wide functional group tolerance, and compatibility with a variety of glycal progenitors in appreciable yields. A mechanistic study has been verified via H2 18 O labeling, which validates that water (moisture) is a sole source of oxygen.
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Affiliation(s)
- Ms Zanjila Azeem
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, BS-10/1, Sector 10, Jankipuram Extension, Sitapur Road, P.O. Box 173, Lucknow, 226 031, India
- Chemical Science, Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Ms Shashiprabha Dubey
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, BS-10/1, Sector 10, Jankipuram Extension, Sitapur Road, P.O. Box 173, Lucknow, 226 031, India
| | - Mr Sk Areful Islam
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, BS-10/1, Sector 10, Jankipuram Extension, Sitapur Road, P.O. Box 173, Lucknow, 226 031, India
| | - Pintu Kumar Mandal
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, BS-10/1, Sector 10, Jankipuram Extension, Sitapur Road, P.O. Box 173, Lucknow, 226 031, India
- Chemical Science, Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
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2
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Lee S, Rhee YH. Total Synthesis of the Purported Structure of Branched Resin Glycosides Merremoside G and H 2. Org Lett 2024; 26:602-606. [PMID: 38206072 DOI: 10.1021/acs.orglett.3c03808] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2024]
Abstract
The first total synthesis of the purported structure of branched resin glycosides merremoside G and H2 is accomplished. A signature step is represented by the sequential transition-metal-catalyzed coupling of stable trisaccharide homoallylic alcohol and monosaccharide alkoxyallene to afford the pentasaccharide skeleton. This de novo strategy is conducted under mild conditions with no need of preactivation. In addition, it allows for efficient preparation of the target compounds in combination with late-stage functionalization.
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Affiliation(s)
- Sukhyun Lee
- Department of Chemistry, Pohang University of Science and Technology, Cheongam-Ro 77, Nam-Gu, Pohang, Kyeongbuk 37673, Republic of Korea
| | - Young Ho Rhee
- Department of Chemistry, Pohang University of Science and Technology, Cheongam-Ro 77, Nam-Gu, Pohang, Kyeongbuk 37673, Republic of Korea
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3
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Das P, Thakur R. Amino-Acid-Derived Amides as Stereodirecting Leaving Groups for Ferrier Rearrangement via Pd(0)-Catalyzed Tsuji-Trost Reactions. Org Lett 2023; 25:6046-6051. [PMID: 37556780 DOI: 10.1021/acs.orglett.3c02226] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/11/2023]
Abstract
Ferrier rearrangement on glycals is an efficient tool to form 2,3-dideoxy glycosides that provide access to various sugar derivatives through olefin functionalization. The classical acid-mediated transformation delivers the α-O-glycosides selectively. In this protocol, amides obtained from amino acids, glycine and proline, have been utilized as sustainable β-directing leaving groups on glycal substrates. The directing groups facilitate β-selective Ferrier rearrangements for hard alcohol nucleophiles by following the Pd(0)-catalyzed Tsuji-Trost inner sphere pathway.
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Affiliation(s)
- Pradip Das
- Department of Chemistry, National Institute of Technology Patna, Patna 800 005, India
| | - Rima Thakur
- Department of Chemistry, National Institute of Technology Patna, Patna 800 005, India
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4
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Kang J, Rhee YH. Synthesis of the Tetrasaccharide Glycone Part of Tetrocarcin A. J Org Chem 2023. [PMID: 36812358 DOI: 10.1021/acs.joc.2c02832] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/24/2023]
Abstract
A de novo synthesis of the tetrasaccharide fragment of tetrocarcin A is described. The key feature of this approach is highlighted by the regio- and diastereoselective Pd-catalyzed hydroalkoxylation of ene-alkoxyallenes with an unprotected l-digitoxose glycoside. The subsequent reaction with digitoxal in combination with chemoselective hydrogenation generated the target molecule.
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Affiliation(s)
- Jihun Kang
- Department of Chemistry, POSTECH, 77 Cheongam-Ro, Nam-Gu, Pohang, Kyungbuk Republic of Korea 37673
| | - Young Ho Rhee
- Department of Chemistry, POSTECH, 77 Cheongam-Ro, Nam-Gu, Pohang, Kyungbuk Republic of Korea 37673
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5
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Ding WY, Zhao HW, Cheng JK, Lu Z, Xiang SH, Tan B. β-C-Glycosylation with 2-Oxindole Acceptors via Palladium-Catalyzed Decarboxylative Reactions. Org Lett 2022; 24:7031-7036. [PMID: 36129413 DOI: 10.1021/acs.orglett.2c02881] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
This report describes a highly efficient β-selective C-glycosylation of bicyclic galactals with 2-oxindoles through a palladium-catalyzed decarboxylative pathway. A variety of substrates representing both glycosyl donors and acceptors could be transformed in greater than 90% yields under mild reaction conditions. The decarboxylation intermediate of galactal could serve as an efficient base to deprotonate the enol tautomer of 2-oxindole and enhance its nucleophilicity. The β-selective nucleophilic addition at the anomeric center originates from the steric hindrance imposed by the palladium and bulky ligand.
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Affiliation(s)
- Wei-Yi Ding
- Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
| | - Hao-Wen Zhao
- Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
| | - Jun Kee Cheng
- Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
| | - Zhiqiang Lu
- College of Chemistry and Chemical Engineering and Henan Key Laboratory of Function-Oriented Porous Materials, Luoyang Normal University, Luoyang 471934, China
| | - Shao-Hua Xiang
- Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
| | - Bin Tan
- Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
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6
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Mukherjee MM, Ghosh R, Hanover JA. Recent Advances in Stereoselective Chemical O-Glycosylation Reactions. Front Mol Biosci 2022; 9:896187. [PMID: 35775080 PMCID: PMC9237389 DOI: 10.3389/fmolb.2022.896187] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Accepted: 04/21/2022] [Indexed: 12/26/2022] Open
Abstract
Carbohydrates involving glycoconjugates play a pivotal role in many life processes. Better understanding toward glycobiological events including the structure–function relationship of these biomolecules and for diagnostic and therapeutic purposes including tailor-made vaccine development and synthesis of structurally well-defined oligosaccharides (OS) become important. Efficient chemical glycosylation in high yield and stereoselectivity is however challenging and depends on the fine tuning of a protection profile to get matching glycosyl donor–acceptor reactivity along with proper use of other important external factors like catalyst, solvent, temperature, activator, and additive. So far, many glycosylation methods have been reported including several reviews also. In the present review, we will concentrate our discussion on the recent trend on α- and β-selective glycosylation reactions reported during the past decade.
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Affiliation(s)
- Mana Mohan Mukherjee
- Laboratory of Cell and Molecular Biology, NIDDK, National Institutes of Health, Bethesda, MD, United States
| | - Rina Ghosh
- Department of Chemistry, Jadavpur University, Kolkata, India
- *Correspondence: John A. Hanover, ; Rina Ghosh,
| | - John A. Hanover
- Laboratory of Cell and Molecular Biology, NIDDK, National Institutes of Health, Bethesda, MD, United States
- *Correspondence: John A. Hanover, ; Rina Ghosh,
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7
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Wang Q, Lai M, Luo H, Ren K, Wang J, Huang N, Deng Z, Zou K, Yao H. Stereoselective O-Glycosylation of Glycals with Arylboronic Acids Using Air as the Oxygen Source. Org Lett 2022; 24:1587-1592. [DOI: 10.1021/acs.orglett.1c04378] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Qiuyuan Wang
- Hubei Key Laboratory of Natural Products Research and Development, Key Laboratory of Functional Yeast (China National Light Industry), College of Biological and Pharmaceutical Sciences, China Three Gorges University, Yichang 443002, P. R. China
| | - Mengnan Lai
- Hubei Key Laboratory of Natural Products Research and Development, Key Laboratory of Functional Yeast (China National Light Industry), College of Biological and Pharmaceutical Sciences, China Three Gorges University, Yichang 443002, P. R. China
| | - Huajun Luo
- Hubei Key Laboratory of Natural Products Research and Development, Key Laboratory of Functional Yeast (China National Light Industry), College of Biological and Pharmaceutical Sciences, China Three Gorges University, Yichang 443002, P. R. China
| | - Keke Ren
- Hubei Key Laboratory of Natural Products Research and Development, Key Laboratory of Functional Yeast (China National Light Industry), College of Biological and Pharmaceutical Sciences, China Three Gorges University, Yichang 443002, P. R. China
| | - Jingrui Wang
- Hubei Key Laboratory of Natural Products Research and Development, Key Laboratory of Functional Yeast (China National Light Industry), College of Biological and Pharmaceutical Sciences, China Three Gorges University, Yichang 443002, P. R. China
| | - Nianyu Huang
- Hubei Key Laboratory of Natural Products Research and Development, Key Laboratory of Functional Yeast (China National Light Industry), College of Biological and Pharmaceutical Sciences, China Three Gorges University, Yichang 443002, P. R. China
| | - Zhangshuang Deng
- Hubei Key Laboratory of Natural Products Research and Development, Key Laboratory of Functional Yeast (China National Light Industry), College of Biological and Pharmaceutical Sciences, China Three Gorges University, Yichang 443002, P. R. China
| | - Kun Zou
- Hubei Key Laboratory of Natural Products Research and Development, Key Laboratory of Functional Yeast (China National Light Industry), College of Biological and Pharmaceutical Sciences, China Three Gorges University, Yichang 443002, P. R. China
| | - Hui Yao
- Hubei Key Laboratory of Natural Products Research and Development, Key Laboratory of Functional Yeast (China National Light Industry), College of Biological and Pharmaceutical Sciences, China Three Gorges University, Yichang 443002, P. R. China
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8
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Lee J, Rhee YH. Pd-Catalyzed Umpolung Chemistry of Glycal Acetates and Their [2,3]-Dehydrosugar Isomers. Org Lett 2021; 24:570-574. [PMID: 34967628 DOI: 10.1021/acs.orglett.1c04004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Glycals and their [2,3]-dehydrosugar derivatives have commonly been used in synthetic chemistry as electrophiles. Here we report a Pd-catalyzed polar inversion (umpolung) of this reaction, where the glycals and isomers can be used as nucleophiles. The reaction showed high regio- and stereoselectivity in the presence of numerous aromatic and aliphatic aldehydes. The synthetic utility of this reaction was demonstrated by the short synthesis of the tetrahydropyran fragment of the anticancer natural product mucocin.
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Affiliation(s)
- Juyeol Lee
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang 790-784, Republic of Korea
| | - Young Ho Rhee
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang 790-784, Republic of Korea
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9
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Griesbach CE, Peczuh MW. Characterization of the low energy conformations and differential reactivities of D-glucose and D-mannose based oxepines. Org Biomol Chem 2021; 19:10635-10646. [PMID: 34850804 DOI: 10.1039/d1ob01900g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Carbohydrate-based oxepines are valuable intermediates for the synthesis of septanose carbohydrates. Here we report the characterization of the preferred conformations of D-glucose and D-mannose based oxepines 1 and 2 using computational chemistry and NMR spectroscopy. Monte Carlo conformational searches on 1 and 2 were performed, followed by DFT optimization and single-point energy calculations on the low energy conformations of each oxepine. Coupling constants were computed for all unique conformations at a B3LYP/6-31G(d,p)u+1s level of theory and weighted based on a Boltzmann distribution. These values were then compared to the experimental values collected using 3JH,H values collected from 1H NMR spectra. Information from the MC/DFT approach was then used in a least squares method that correlated DFT calculated and observed 3JH,H coupling constants. The conformations of 1 and 2 are largely governed by a combination of the rigidifying enol ether element in combination with the reduction of unfavorable interactions. The vinylogous anomeric effect (VAE) emerged as a consequence, rather than a driver of conformations. Oxepine 1 showed greater reactivity in Ferrier rearrangement reactions relative to oxepine 2, in line with its greater %VAE.
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Affiliation(s)
- Caleb E Griesbach
- Department of Chemistry, University of Connecticut, 55 N. Eagleville Road, U3060, Storrs, CT 06269-3060, USA.
| | - Mark W Peczuh
- Department of Chemistry, University of Connecticut, 55 N. Eagleville Road, U3060, Storrs, CT 06269-3060, USA.
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10
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Das P, Rahaman Molla M, Kumar A, Thakur R. o-Cyanobenzoate: A Recyclable and Reusable Stereo-directing Group for β-O-Glycosylation via Pd(0)-catalyzed Ferrier Rearrangement. Chem Asian J 2021; 17:e202101156. [PMID: 34866348 DOI: 10.1002/asia.202101156] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Revised: 11/13/2021] [Indexed: 11/11/2022]
Abstract
Inner sphere Tsuji-Trost reaction has found recent application for β-selective Ferrier rearrangement of glycal substrates with alcohol nucleophiles. Herein, we report an efficient and stereoselective synthesis of 2,3-dideoxy-β-O-glycosides from C3-(o-cyanobenzoate) ester protected glycal donors via Ferrier rearrangement under Pd(0)-catalyzed Tsuji-Trost conditions. The synthesized donors indeed reacted with a variety of acceptors to afford the corresponding glycosides in good yields and excellent β-stereoselectivity. The stereochemical outcome of the reactions has been found to be independent of the nature of protecting groups or conformational flexibility of the glycal donors. Furthermore, regeneration of ortho-cyanobenzoic acid post rearrangement makes it a recyclable and reusable stereodirecting group. A preliminary mechanistic study demonstrates the importance of cyano-group for the observed rearrangement and stereoselectivity. Incorporation of the directing group on the benzoate ester has altered the reactivity of the ester group as a leaving group for Tsuji-Trost as well as Ferrier Rearrangement pathway.
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Affiliation(s)
- Pradip Das
- Department of Chemistry, National Institute of Technology Patna, Patna, 800005, India
| | - Mosidur Rahaman Molla
- Department of Chemistry, National Institute of Technology Patna, Patna, 800005, India
| | - Amit Kumar
- Department of Chemistry, Indian Institute of Technology Patna, Patna, 801106, India
| | - Rima Thakur
- Department of Chemistry, National Institute of Technology Patna, Patna, 800005, India
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11
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Barpuzary B, Kim M, Rhee YH. Synthetic Study toward Saccharomicin Based upon Asymmetric Metal Catalysis. Org Lett 2021; 23:5969-5972. [PMID: 34292756 DOI: 10.1021/acs.orglett.1c02060] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Here, we report a de novo metal-catalyzed approach toward the stereoselective glycosidic bond formation in saccharomicin. The signature step is highlighted by the Pd-catalyzed asymmetric coupling of ene-alkoxyallenes and highly functionalized alcohol substrates. The reaction showed high chemo-, regio-, and ligand-driven diastereoselectivity. In combination with the ring-closing metathesis and late-stage functionalization, this method led to highly efficient synthesis of saccharosamine-rhamnose and rhamnose-fucose fragments.
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Affiliation(s)
- Bhawna Barpuzary
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Hyoja-dong San 31, Pohang 790-784, Republic of Korea
| | - Mijin Kim
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Hyoja-dong San 31, Pohang 790-784, Republic of Korea
| | - Young Ho Rhee
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Hyoja-dong San 31, Pohang 790-784, Republic of Korea
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12
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Abstract
A new synthetic approach toward oligosaccharides consisting only of 2,3,6-trideoxypyranoglycosides is reported. The key feature is highlighted by the convergent approach that allows the introduction of the aglycon moiety in the late stage of the synthesis. As an illustrative example, the tetrasaccharide portion of cervimycin K was prepared as cyclohexyl glycoside.
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Affiliation(s)
- Jihun Kang
- Department of Chemistry, POSTECH, 77 Cheongam-Ro, Nam-Gu, Pohang, Kyungbuk, Republic of Korea
| | - Young Ho Rhee
- Department of Chemistry, POSTECH, 77 Cheongam-Ro, Nam-Gu, Pohang, Kyungbuk, Republic of Korea
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13
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Yang J, Dai Y, Bartlett R, Zhang Q. Convergent Palladium-Catalyzed Stereospecific Arginine Glycosylation Using Glycals. Org Lett 2021; 23:4008-4012. [PMID: 33979173 DOI: 10.1021/acs.orglett.1c01218] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
A stereospecific convergent peptide arginine glycosylation method is reported for the first time. A recently discovered arginine glycosylation invigorated the interests of arginine modification, which has been challenging, because of the inertness of the guanidino side chain. The approach renders the arginine glycoside construction convergently. Catalyzed by palladium complex, glycals modify arginine guanidino groups in one step with high functional group tolerance at ambient temperature. The glycosylated products may be converted to glycopeptide analogues in few steps.
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Affiliation(s)
- Jun Yang
- Department of Chemistry, University at Albany, State University of New York, 1400 Washington Avenue, Albany, New York 12222, United States
| | - Yuanwei Dai
- Department of Chemistry, University at Albany, State University of New York, 1400 Washington Avenue, Albany, New York 12222, United States
| | - Ryan Bartlett
- Department of Chemistry, University at Albany, State University of New York, 1400 Washington Avenue, Albany, New York 12222, United States
| | - Qiang Zhang
- Department of Chemistry, University at Albany, State University of New York, 1400 Washington Avenue, Albany, New York 12222, United States
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14
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15
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Lee K, Kim M, Rhee YH. A Convergent Synthesis of the Tetrasaccharide Fragment of the Purported Structure of Durantanin I. B KOREAN CHEM SOC 2021. [DOI: 10.1002/bkcs.12265] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Keehwan Lee
- Department of Chemistry Pohang University of Science and Technology Kyungbuk 37673 Republic of Korea
| | - Mijin Kim
- Department of Chemistry Pohang University of Science and Technology Kyungbuk 37673 Republic of Korea
| | - Young Ho Rhee
- Department of Chemistry Pohang University of Science and Technology Kyungbuk 37673 Republic of Korea
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16
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Pal KB, Guo A, Das M, Lee J, Báti G, Yip BRP, Loh TP, Liu XW. Iridium-promoted deoxyglycoside synthesis: stereoselectivity and mechanistic insight. Chem Sci 2020; 12:2209-2216. [PMID: 34163986 PMCID: PMC8179265 DOI: 10.1039/d0sc06529c] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Herein, we devised a method for stereoselective O-glycosylation using an Ir(i)-catalyst which enables both hydroalkoxylation and nucleophilic substitution of glycals with varying substituents at the C3 position. In this transformation, 2-deoxy-α-O-glycosides were acquired when glycals equipped with a notoriously poor leaving group at C3 were used; in contrast 2,3-unsaturated-α-O-glycosides were produced from glycals that bear a good leaving group at C3. Mechanistic studies indicate that both reactions proceed via the directing mechanism, through which the acceptor coordinates to the Ir(i) metal in the α-face-coordinated Ir(i)-glycal π-complex and then attacks the glycal that contains the O-glycosidic bond in a syn-addition manner. This protocol exhibits good functional group tolerance and is exemplified with the preparation of a library of oligosaccharides in moderate to high yields and with excellent stereoselectivities. Ir(i)-catalyzed α-selective O-glycosylation of glycals provided an access to both 2-deoxyglycosides and 2,3-unsaturated glycosides with a broad substrate scope. The underlying rationale of α-selectivity has been illustrated by the DFT study.![]()
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Affiliation(s)
- Kumar Bhaskar Pal
- Institute of Advanced Synthesis, Northwestern Polytechnical University Xi'an 710072 China.,Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University 21 Nanyang Link Singapore 637371
| | - Aoxin Guo
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University 21 Nanyang Link Singapore 637371
| | - Mrinmoy Das
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University 21 Nanyang Link Singapore 637371
| | - Jiande Lee
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University 21 Nanyang Link Singapore 637371 .,Nanyang Environment and Water Research Institute, Nanyang Technological University 1 Cleantech Loop Singapore 637141
| | - Gábor Báti
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University 21 Nanyang Link Singapore 637371
| | - Benjamin Rui Peng Yip
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University 21 Nanyang Link Singapore 637371
| | - Teck-Peng Loh
- Institute of Advanced Synthesis, Northwestern Polytechnical University Xi'an 710072 China.,Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University 21 Nanyang Link Singapore 637371 .,Yangtze River Delta Research Institute of Northwestern Polytechnical University Taicang Jiangsu 215400 China
| | - Xue-Wei Liu
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University 21 Nanyang Link Singapore 637371
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17
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Synthesis, NMR and X-ray studies on novel heteroaromatic aldoxime O-ether 2- and 2,3-unsaturated glycosides. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.152241] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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18
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Mei Y, Dong Y, Li J, Zhang B, Sun G, Zhou J, Si W, Han Y, Wu Z, Zhang J. FeCl3/C as an efficient catalyst for Ferrier rearrangement of 3,4,6-tri-O-Benzyl-D-glucal. J Carbohydr Chem 2020. [DOI: 10.1080/07328303.2020.1788575] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Yuling Mei
- School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, China
| | - Youxian Dong
- School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, China
| | - Juan Li
- School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, China
| | - Bo Zhang
- School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, China
| | - Guosheng Sun
- School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, China
| | - Jiafen Zhou
- School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, China
| | - Wenshuai Si
- School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, China
| | - Yiwen Han
- School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, China
| | - Zhenliang Wu
- School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, China
| | - Jianbo Zhang
- School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, China
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19
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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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20
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Abstract
The substitution reaction of glycal (1,2-unsaturated cyclic carbohydrate derivative)
at C1 by allyl rearrangement in the presence of a catalyst is called Ferrier type-I rearrangement.
2,3-Unsaturated glycosides are usually obtained from glycals through Ferrier
type-I rearrangement, and their potential biological activities have gradually attracted
widespread attention of researchers. This review summarizes recent advances (2009-
present) in the application of various types of catalysts to Ferrier type-I rearrangement reactions,
including their synthesis, mechanism, and application of 2, 3-unsaturated glycosides.
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Affiliation(s)
- Nan Jiang
- School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200241, China
| | - Zhengliang Wu
- School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200241, China
| | - Youxian Dong
- School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200241, China
| | - Xiaoxia Xu
- School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200241, China
| | - Xiaxia Liu
- School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200241, China
| | - Jianbo Zhang
- School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200241, China
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21
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Herrera-González I, Sánchez-Fernández EM, Sau A, Nativi C, García Fernández JM, Galán MC, Ortiz Mellet C. Stereoselective Synthesis of Iminosugar 2-Deoxy(thio)glycosides from Bicyclic Iminoglycal Carbamates Promoted by Cerium(IV) Ammonium Nitrate and Cooperative Brønsted Acid-Type Organocatalysis. J Org Chem 2020; 85:5038-5047. [PMID: 32159355 DOI: 10.1021/acs.joc.0c00324] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The first examples of iminosugar-type 2-deoxy(thio)glycoside mimetics are reported. The key step is the activation of a bicyclic iminoglycal carbamate to generate a highly reactive acyliminium cation. Cerium(IV) ammonium nitrate efficiently promoted the formation of 2-deoxy S-glycosides in the presence of thiols, probably by in situ generation of catalytic HNO3, with complete α-stereoselectivity. Cooperative phosphoric acid/Schreiner's thiourea organocatalysis proved better suited for generating 2-deoxy O-glycosides, significantly broadening the scope of the approach.
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Affiliation(s)
- Irene Herrera-González
- Deptartment of Química Orgánica, Facultad de Química, Universidad de Sevilla, C/ Profesor García González 1, E-41012 Sevilla, Spain
| | - Elena M Sánchez-Fernández
- Deptartment of Química Orgánica, Facultad de Química, Universidad de Sevilla, C/ Profesor García González 1, E-41012 Sevilla, Spain
| | - Abhijit Sau
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, U.K
| | - Cristina Nativi
- Department of Chemistry "Ugo Schiff", University of Florence, Via della Lastruccia, 13, 50019 Sesto Fiorentino, Florence, Italy
| | - José M García Fernández
- Instituto de Investigaciones Químicas (IIQ), CSIC-Universidad de Sevilla, Avda. Américo Vespucio 49, E-41092 Sevilla, Spain
| | - M Carmen Galán
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, U.K
| | - Carmen Ortiz Mellet
- Deptartment of Química Orgánica, Facultad de Química, Universidad de Sevilla, C/ Profesor García González 1, E-41012 Sevilla, Spain
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22
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Palo-Nieto C, Sau A, Jeanneret R, Payard PA, Salamé A, Martins-Teixeira MB, Carvalho I, Grimaud L, Galan MC. Copper Reactivity Can Be Tuned to Catalyze the Stereoselective Synthesis of 2-Deoxyglycosides from Glycals. Org Lett 2020; 22:1991-1996. [DOI: 10.1021/acs.orglett.9b04525] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Carlos Palo-Nieto
- School of Chemistry, University of Bristol, Cantock’s Close, Bristol BS8 3TS, United Kingdom
| | - Abhijit Sau
- School of Chemistry, University of Bristol, Cantock’s Close, Bristol BS8 3TS, United Kingdom
| | - Robin Jeanneret
- School of Chemistry, University of Bristol, Cantock’s Close, Bristol BS8 3TS, United Kingdom
| | - Pierre-Adrien Payard
- Laboratoire des biomolécules (LBM), Sorbonne Université − Ecole Normale Supérieure − CNRS, 24 rue Lhomond, 75005 Paris, France
| | - Aude Salamé
- Laboratoire des biomolécules (LBM), Sorbonne Université − Ecole Normale Supérieure − CNRS, 24 rue Lhomond, 75005 Paris, France
| | - Maristela Braga Martins-Teixeira
- School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Av do Café s/n, Monte Alegre CEP 14040-903, Brazil
| | - Ivone Carvalho
- School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Av do Café s/n, Monte Alegre CEP 14040-903, Brazil
| | - Laurence Grimaud
- Laboratoire des biomolécules (LBM), Sorbonne Université − Ecole Normale Supérieure − CNRS, 24 rue Lhomond, 75005 Paris, France
| | - M. Carmen Galan
- School of Chemistry, University of Bristol, Cantock’s Close, Bristol BS8 3TS, United Kingdom
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23
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Lafuente L, Santiago CC, Rojas AH, Piro OE, Echeverría GA, Ponzinibbio A. Selective Synthesis and Molecular Structure of Novel Aminooxyglycosyl Derivatives Bearing Hydroxyphenyl Moieties. ChemistrySelect 2020. [DOI: 10.1002/slct.201903727] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Leticia Lafuente
- Centro de Estudio de Compuestos Orgánicos (CEDECOR-UNLP-CIC). Universidad Nacional de La Plata. 47 y 115 1900 La Plata Argentina
| | - Cintia C. Santiago
- Departamento de Química, Facultad de Ciencias Exactas. Universidad Nacional de La Plata. 47 y 115 1900 La Plata Argentina
| | - Agustín H. Rojas
- Centro de Estudio de Compuestos Orgánicos (CEDECOR-UNLP-CIC). Universidad Nacional de La Plata. 47 y 115 1900 La Plata Argentina
| | - Oscar E. Piro
- LANADI e IFLP (CCT-La Plata), Departamento de Física, Facultad de Ciencias Exactas Universidad Nacional de La Plata. CC 67 1900 La Plata Argentina
| | - Gustavo A. Echeverría
- LANADI e IFLP (CCT-La Plata), Departamento de Física, Facultad de Ciencias Exactas Universidad Nacional de La Plata. CC 67 1900 La Plata Argentina
| | - Agustín Ponzinibbio
- Centro de Estudio de Compuestos Orgánicos (CEDECOR-UNLP-CIC). Universidad Nacional de La Plata. 47 y 115 1900 La Plata Argentina
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24
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Tatina MB, Moussa Z, Xia M, Judeh ZMA. Perfluorophenylboronic acid-catalyzed direct α-stereoselective synthesis of 2-deoxygalactosides from deactivated peracetylated d-galactal. Chem Commun (Camb) 2019; 55:12204-12207. [PMID: 31549691 DOI: 10.1039/c9cc06151g] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Perfluorophenylboronic acid 1c catalyzes the direct stereoselective addition of alcohol nucleophiles to deactivated peracetylated d-galactal to give 2-deoxygalactosides in 55-88% yield with complete α-selectivity. The unprecedented results reported here also enable the synthesis of disaccharides containing the 2-deoxygalactose moiety directly from the deactivated peracetylated d-galactal. This convenient and metal-free glycosylation method works well with a wide range of alcohol nucleophiles as acceptors and tolerates a range of functional groups without the formation of the Ferrier byproduct and without the need for a large excess of nucleophiles or additives. The method is potentially useful for the synthesis of a variety of α-2-deoxygalactosides.
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Affiliation(s)
- Madhu Babu Tatina
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 637459, Singapore.
| | - Ziad Moussa
- Department of Chemistry, College of Science, United Arab Emirates University, 15551, United Arab Emirates
| | - Mengxin Xia
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 637459, Singapore.
| | - Zaher M A Judeh
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 637459, Singapore.
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25
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Tatina MB, Mengxin X, Peilin R, Judeh ZMA. Robust perfluorophenylboronic acid-catalyzed stereoselective synthesis of 2,3-unsaturated O-, C-, N- and S-linked glycosides. Beilstein J Org Chem 2019; 15:1275-1280. [PMID: 31293675 PMCID: PMC6604698 DOI: 10.3762/bjoc.15.125] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2019] [Accepted: 05/22/2019] [Indexed: 02/04/2023] Open
Abstract
A convenient protocol was developed for the synthesis of 2,3-unsaturated C-, O-, N- and S-linked glycosides (enosides) using 20 mol % perflurophenylboronic acid catalyst via Ferrier rearrangement. Using this protocol, D-glucals and L-rhamnals reacted with various C-, O-, N- and S-nucleophiles to give a wide range of glycosides in up to 98% yields with mainly α-anomeric selectivity. The perflurophenylboronic acid successfully catalyzed a wide range of substrates (both glucals and nucleophiles) under very mild reaction conditions.
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Affiliation(s)
- Madhu Babu Tatina
- School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore, 62 Nanyang Drive, N1.2-B1-14, Singapore 637459, Tel.: +65-6790-6738
| | - Xia Mengxin
- School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore, 62 Nanyang Drive, N1.2-B1-14, Singapore 637459, Tel.: +65-6790-6738
| | - Rao Peilin
- School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore, 62 Nanyang Drive, N1.2-B1-14, Singapore 637459, Tel.: +65-6790-6738
| | - Zaher M A Judeh
- School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore, 62 Nanyang Drive, N1.2-B1-14, Singapore 637459, Tel.: +65-6790-6738
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26
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Bihari Mishra K, Kandasamy J. Tris(Pentafluorophenyl)Borane‐Driven Stereoselective
O
‐Glycosylation with Glycal Donors under Mild Condition. ASIAN J ORG CHEM 2019. [DOI: 10.1002/ajoc.201900055] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Kunj Bihari Mishra
- Department of chemistryIndian Institute of Technology, IIT BHU Varanasi- 221005
| | - Jeyakumar Kandasamy
- Department of chemistryIndian Institute of Technology, IIT BHU Varanasi- 221005
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27
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Sau A, Palo-Nieto C, Galan MC. Substrate-Controlled Direct α-Stereoselective Synthesis of Deoxyglycosides from Glycals Using B(C 6F 5) 3 as Catalyst. J Org Chem 2019; 84:2415-2424. [PMID: 30706711 PMCID: PMC6466476 DOI: 10.1021/acs.joc.8b02613] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
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B(C6F5)3 enables the metal-free
unprecedented substrate-controlled direct α-stereoselective
synthesis of deoxyglycosides from glycals. 2,3-Unsaturated α-O-glycoside products are obtained with deactivated glycals
at 75 °C in the presence of the catalyst, while 2-deoxyglycosides
are formed using activated glycals that bear no leaving group at C-3
at lower temperatures. The reaction proceeds in good to excellent
yields via concomitant borane activation of glycal donor and nucleophile
acceptor. The method is exemplified with the synthesis of a series
of rare and biologically relevant glycoside analogues.
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Affiliation(s)
- Abhijit Sau
- School of Chemistry , University of Bristol , Cantock's Close, Bristol BS8 1TS , United Kingdom
| | - Carlos Palo-Nieto
- School of Chemistry , University of Bristol , Cantock's Close, Bristol BS8 1TS , United Kingdom
| | - M Carmen Galan
- School of Chemistry , University of Bristol , Cantock's Close, Bristol BS8 1TS , United Kingdom
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28
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Lee J, Kang S, Kim J, Moon D, Rhee YH. A Convergent Synthetic Strategy towards Oligosaccharides containing 2,3,6-Trideoxypyranoglycosides. Angew Chem Int Ed Engl 2018; 58:628-631. [DOI: 10.1002/anie.201812222] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2018] [Revised: 11/15/2018] [Indexed: 11/09/2022]
Affiliation(s)
- Juyeol Lee
- Department of Chemistry; Pohang University of Science and Technology (POSTECH); Pohang 37673 Republic of Korea
| | - Soyeong Kang
- Department of Chemistry; Pohang University of Science and Technology (POSTECH); Pohang 37673 Republic of Korea
| | - Jungjoon Kim
- Department of Chemistry; Pohang University of Science and Technology (POSTECH); Pohang 37673 Republic of Korea
| | - Dohyun Moon
- Department of Beamline; Pohang Accelerator Laboratory; Pohang 37673 Republic of Korea
| | - Young Ho Rhee
- Department of Chemistry; Pohang University of Science and Technology (POSTECH); Pohang 37673 Republic of Korea
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29
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Lee J, Kang S, Kim J, Moon D, Rhee YH. A Convergent Synthetic Strategy towards Oligosaccharides containing 2,3,6-Trideoxypyranoglycosides. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201812222] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Juyeol Lee
- Department of Chemistry; Pohang University of Science and Technology (POSTECH); Pohang 37673 Republic of Korea
| | - Soyeong Kang
- Department of Chemistry; Pohang University of Science and Technology (POSTECH); Pohang 37673 Republic of Korea
| | - Jungjoon Kim
- Department of Chemistry; Pohang University of Science and Technology (POSTECH); Pohang 37673 Republic of Korea
| | - Dohyun Moon
- Department of Beamline; Pohang Accelerator Laboratory; Pohang 37673 Republic of Korea
| | - Young Ho Rhee
- Department of Chemistry; Pohang University of Science and Technology (POSTECH); Pohang 37673 Republic of Korea
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30
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Yao H, Vu MD, Liu XW. Recent advances in reagent-controlled stereoselective/stereospecific glycosylation. Carbohydr Res 2018; 473:72-81. [PMID: 30641292 DOI: 10.1016/j.carres.2018.10.006] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2018] [Revised: 10/18/2018] [Accepted: 10/18/2018] [Indexed: 12/15/2022]
Abstract
The formation of O-glycosidic linkage is arguably one of the most important topics in glycoscience due to the prevalence of O-glycosides in nature. Great efforts have been devoted to this field by many carbohydrate chemists to develop stereoselective/stereospecific glycosylation methodologies. Although glycosyl donor- and acceptor-controlled strategies have significantly progressed, the tedious design and pre-synthesis of substrates could not be avoided. On the other hand, reagent-controlled glycosylation can overcome these challenges and produce the desired selectivity by only altering external factors such as concentration, reagents or other reaction conditions. This mini-review discusses selected recent novel methodologies on reagent-mediated stereo-controlled glycosylation in the last decade, classified by the types of glycosyl donors.
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Affiliation(s)
- Hui Yao
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 637371, Singapore
| | - Minh Duy Vu
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 637371, Singapore
| | - Xue-Wei Liu
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 637371, Singapore.
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31
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Abstract
Deoxy-sugars often play a critical role in modulating the potency of many bioactive natural products. Accordingly, there has been sustained interest in methods for their synthesis over the past several decades. The focus of much of this work has been on developing new glycosylation reactions that permit the mild and selective construction of deoxyglycosides. This Review covers classical approaches to deoxyglycoside synthesis, as well as more recently developed chemistry that aims to control the selectivity of the reaction through rational design of the promoter. Where relevant, the application of this chemistry to natural product synthesis will also be described.
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Affiliation(s)
- Clay S. Bennett
- Department
of Chemistry, Tufts University, 62 Talbot Avenue, Medford, Massachusetts 02155, United States
| | - M. Carmen Galan
- School
of Chemistry, University of Bristol, Cantock’s Close, Bristol BS8 1TS, United Kingdom
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32
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Affiliation(s)
- Michael Martin Nielsen
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, 2100 Copenhagen, Denmark
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33
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34
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Dai Y, Zheng J, Zhang Q. General Strategy for Stereoselective Synthesis of β- N-Glycosyl Sulfonamides via Palladium-Catalyzed Glycosylation. Org Lett 2018; 20:3923-3927. [PMID: 29916717 DOI: 10.1021/acs.orglett.8b01506] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
A highly efficient and mild glycosylation reaction between 3,4- O-carbonate glycal and N-tosyl functionalized aliphatic and aromatic amines via palladium-catalyzed decarboxylative allylation is disclosed. A wide range of highly functionalized 2,3-unsaturated β- N-glycosides are furnished in good to excellent yields and complete regioselectivity and stereoselectivity. In addition, applications of the glycosyl sulfonamides as the precursor to assemble functional derivatives have also been explored, including glycosylation, dihydroxylation, and nucleophilic addition to the N-glycosides.
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Affiliation(s)
- Yuanwei Dai
- Department of Chemistry , University at Albany, State University of New York , 1400 Washington Avenue , Albany , New York 12222 , United States
| | - Jianfeng Zheng
- Department of Chemistry , University at Albany, State University of New York , 1400 Washington Avenue , Albany , New York 12222 , United States
| | - Qiang Zhang
- Department of Chemistry , University at Albany, State University of New York , 1400 Washington Avenue , Albany , New York 12222 , United States
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35
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Begum Z, Shankar G, Sirisha K, Reddy BS. Pd(II)/PhI(OAc)2 promoted direct cross coupling of glucals with aromatic acids. Carbohydr Res 2018; 461:1-3. [DOI: 10.1016/j.carres.2018.03.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2018] [Revised: 03/04/2018] [Accepted: 03/04/2018] [Indexed: 01/17/2023]
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36
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Bandi R, Chalapala S, Chandrasekaran S. 2-Deoxyglycosyl 3-benzoylpropionates as novel donors for the direct and stereoselective synthesis of 2-deoxy-glycosides. Org Biomol Chem 2018. [DOI: 10.1039/c8ob00216a] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Lewis acid mediated stereoselective synthesis of 2-deoxy-O-glycosides has been demonstrated using 2-deoxyglycosyl 3-benzoylpropionates as novel glycosyl donors.
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Affiliation(s)
- Ramakrishna Bandi
- Department of Organic Chemistry
- Indian Institute of Science
- Bangalore 560 012
- India
| | - Sudharani Chalapala
- Department of Organic Chemistry
- Indian Institute of Science
- Bangalore 560 012
- India
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37
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Palo-Nieto C, Sau A, Galan MC. Gold(I)-Catalyzed Direct Stereoselective Synthesis of Deoxyglycosides from Glycals. J Am Chem Soc 2017; 139:14041-14044. [PMID: 28934850 PMCID: PMC5951607 DOI: 10.1021/jacs.7b08898] [Citation(s) in RCA: 71] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
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Au(I) in combination
with AgOTf enables the unprecedented direct
and α-stereoselective catalytic synthesis of deoxyglycosides
from glycals. Mechanistic investigations suggest that the reaction
proceeds via Au(I)-catalyzed hydrofunctionalization of the enol ether
glycoside. The room temperature reaction is high yielding and amenable
to a wide range of glycal donors and OH nucleophiles.
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Affiliation(s)
- Carlos Palo-Nieto
- School of Chemistry, University of Bristol , Cantock's Close, Bristol BS8 1TS, United Kingdom
| | - Abhijit Sau
- School of Chemistry, University of Bristol , Cantock's Close, Bristol BS8 1TS, United Kingdom
| | - M Carmen Galan
- School of Chemistry, University of Bristol , Cantock's Close, Bristol BS8 1TS, United Kingdom
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