1
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Upadhyaya K, Dubbu S. Advancing carbohydrate functionality: The role of hypervalent iodine. Carbohydr Res 2024; 542:109175. [PMID: 38865797 DOI: 10.1016/j.carres.2024.109175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2024] [Revised: 05/29/2024] [Accepted: 06/03/2024] [Indexed: 06/14/2024]
Abstract
Hypervalent iodine reagents have undergone significant development and widespread application in the functionalization of carbohydrates. This is primarily attributed to their exceptional properties, including mildness, ease of handling, high selectivity, environmental friendliness, and stability. This review aims to emphasize the utilization of hypervalent iodine compounds in the functionalization of carbohydrates. The present article covers various aspects, including glycal functionalization, C-H or N-H insertion reactions, O-arylations, C-2 deoxy-2-iodo glycoconjugates, iminosugars, and C3-oxo-glycals, achieved through the use of hypervalent iodine reagents/catalysts. Additionally, it explores hypervalent iodine-mediated bioactive 1,3,5-trioxocane synthesis followed by rare sugars synthesis.
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Affiliation(s)
- Kapil Upadhyaya
- Department of Chemical Physiology and Biochemistry, Oregon Health and Science University, Portland, OR 97239, USA.
| | - Sateesh Dubbu
- Roger Adams Laboratory, Department of Chemistry, University of Illinois, Urbana, IL, 61801, USA.
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2
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Li J, Yan J, Liu YZ, Ma X. Stereoselective and controllable C3-Amination or C1,C3-di-amination of 2-nitroglycals. Carbohydr Res 2024; 540:109121. [PMID: 38692248 DOI: 10.1016/j.carres.2024.109121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2024] [Revised: 04/09/2024] [Accepted: 04/15/2024] [Indexed: 05/03/2024]
Abstract
Precise and selective modification of carbohydrates is a critical strategy in producing diverse carbohydrate derivatives for exploiting their functions. We disclosed a simple, efficient, and highly regioselective and stereoselective protocol to controllable amination of 2-nitroglycals under mild conditions in 5 min. A range of 3-amino-carbohydrates including 3-arylamino-2-nitro-glycals and 1,3-di-amino-carbohydrate derivatives were obtained in good to excellent yield with excellent stereoselectivity. The produced 3-amino-2-nitro-glycals can be used as a precursor for further transformation.
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Affiliation(s)
- Jiangtao Li
- Natural Products Research Center, Chengdu Institute of Biology, Chinese Academy of Sciences, 610041, Chengdu, People's Republic of China; University of Chinese Academy of Sciences, Beijing, 100049, People's Republic of China
| | - Jiaxin Yan
- Natural Products Research Center, Chengdu Institute of Biology, Chinese Academy of Sciences, 610041, Chengdu, People's Republic of China; University of Chinese Academy of Sciences, Beijing, 100049, People's Republic of China
| | - Ya-Zhou Liu
- Natural Products Research Center, Chengdu Institute of Biology, Chinese Academy of Sciences, 610041, Chengdu, People's Republic of China; University of Chinese Academy of Sciences, Beijing, 100049, People's Republic of China
| | - Xiaofeng Ma
- Natural Products Research Center, Chengdu Institute of Biology, Chinese Academy of Sciences, 610041, Chengdu, People's Republic of China; University of Chinese Academy of Sciences, Beijing, 100049, People's Republic of China.
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3
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Guo H, Kirchhoff JL, Strohmann C, Grabe B, Loh CCJ. Asymmetric Pd/Organoboron-Catalyzed Site-Selective Carbohydrate Functionalization with Alkoxyallenes Involving Noncovalent Stereocontrol. Angew Chem Int Ed Engl 2024; 63:e202400912. [PMID: 38530140 DOI: 10.1002/anie.202400912] [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: 01/15/2024] [Revised: 03/19/2024] [Accepted: 03/20/2024] [Indexed: 03/27/2024]
Abstract
Herein, we demonstrate the robustness of a synergistic chiral Pd/organoboron system in tackling a challenging suite of site-, regio-, enantio- and diastereoselectivity issues across a considerable palette of biologically relevant carbohydrate polyols, when prochiral alkoxyallenes were employed as electrophiles. In view of the burgeoning role of noncovalent interactions (NCIs) in stereoselective carbohydrate synthesis, our mechanistic experiments and DFT modeling of the reaction path unexpectedly revealed that NCIs such as hydrogen bonding and CH-π interactions between the resting states of the Pd-π-allyl complex and the borinate saccharide are critically involved in the stereoselectivity control. Our strategy thus illuminates the untapped potential of harnessing NCIs in the context of transition metal catalysis to tackle stereoselectivity challenges in carbohydrate functionalization.
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Affiliation(s)
- Hao Guo
- Abteilung Chemische Biologie, Max Planck Institut für Molekulare Physiologie, Otto-Hahn-Straße 11, 44227, Dortmund, Germany
- Fakultät für Chemie und Chemische Biologie, Technische Universität Dortmund, Otto-Hahn-Straße 4a, 44227, Dortmund, Germany
| | - Jan-Lukas Kirchhoff
- Technische Universität Dortmund, Fakultät für Chemie und Chemische Biologie Anorganische Chemie, Otto-Hahn-Straße 6, 44227, Dortmund, Germany
| | - Carsten Strohmann
- Technische Universität Dortmund, Fakultät für Chemie und Chemische Biologie Anorganische Chemie, Otto-Hahn-Straße 6, 44227, Dortmund, Germany
| | - Bastian Grabe
- NMR Department Fakultät für Chemie und Chemische Biologie, Technische Universität Dortmund, Otto-Hahn-Straße 4a, 44227, Dortmund, Germany
| | - Charles C J Loh
- Abteilung Chemische Biologie, Max Planck Institut für Molekulare Physiologie, Otto-Hahn-Straße 11, 44227, Dortmund, Germany
- Fakultät für Chemie und Chemische Biologie, Technische Universität Dortmund, Otto-Hahn-Straße 4a, 44227, Dortmund, Germany
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4
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Li J, Fu Z, Qiao Z, Xie D, Zhang L, Liu YZ, Yang J, Yan JX, Ma X. Controllable 1,3-Bis-Functionalization of 2-Nitroglycals with High Regioselectivity and Stereoselectivity Enabled by a H-Bond Catalyst. JACS AU 2024; 4:974-984. [PMID: 38559736 PMCID: PMC10976612 DOI: 10.1021/jacsau.3c00727] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Revised: 02/26/2024] [Accepted: 02/26/2024] [Indexed: 04/04/2024]
Abstract
The selective modification of carbohydrates is significant for producing their unnatural analogues for drug discovery. C1-functionalization (glycosylation) and C1,C2-difunctionalization of carbohydrates have been well developed. In contrast, C3-functionalization or C1,C3-difunctionalization of carbohydrates remains rare. Herein, we report such processes that efficiently and stereoselectively modify carbohydrates. Specifically, we found that trifluoroethanol (TFE) could promote 1,3-bis-indolylation/pyrrolylation of 2-nitroglycals generated carbohydrate derivatives in up to 93% yield at room temperature; slightly reducing the temperature could install two different indoles at the C1- and C3-positions. Switching TFE to a bifunctional amino thiourea catalyst leads to the generation of C3 monosubstituted carbohydrates, which could also be used to construct 1,3-di-C-functionalized carbohydrates. This approach produced a range of challenging sugar derivatives (over 80 examples) with controllable and high stereoselectivity (single isomer for over 90% of the examples). The potential applications of the reaction were demonstrated by a set of transformations including the synthesis of bridged large-ring molecules and gram scale reactions. Biological activities evaluation demonstrated that three compounds exhibit a potent inhibitory effect on human cancer cells T24, HCT116, AGS, and MKN-45 with IC50 ranged from 0.695 to 3.548 μM.
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Affiliation(s)
- Jiangtao Li
- Natural
Products Research Center, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, People’s Republic of China
- University
of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
| | - Zhengyan Fu
- Natural
Products Research Center, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, People’s Republic of China
- Department
of Biotherapy, Cancer Center and State Key Laboratory of Biotherapy,
West China Hospital, Sichuan University, Chengdu 610041, People’s Republic of China
| | - Zeen Qiao
- Natural
Products Research Center, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, People’s Republic of China
- University
of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
| | - Demeng Xie
- Natural
Products Research Center, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, People’s Republic of China
| | - Li Zhang
- Natural
Products Research Center, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, People’s Republic of China
- University
of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
| | - Ya-Zhou Liu
- Natural
Products Research Center, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, People’s Republic of China
| | - Jian Yang
- Natural
Products Research Center, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, People’s Republic of China
- University
of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
| | - Jia-Xin Yan
- Natural
Products Research Center, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, People’s Republic of China
- University
of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
| | - Xiaofeng Ma
- Natural
Products Research Center, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, People’s Republic of China
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5
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Nakamura Y, Irisawa K, Makino K, Shimada N. Boronic Acid/Palladium Hybrid Catalysis for Regioselective O-Allylation of Carbohydrates. J Org Chem 2024. [PMID: 38194418 DOI: 10.1021/acs.joc.3c02445] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2024]
Abstract
Novel imidazole-containing boronic acid and palladium hybrid catalysis for regioselective O-allylation of carbohydrates has been developed. This catalytic process enables the introduction of a useful allyl functional group into the equatorial hydroxy group of cis-1,2-diols of various carbohydrates with low catalyst loading and excellent regioselectivities. This is the first report on hybrid catalysis in combination with a Lewis base-containing boronic acid and a transition metal complex.
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Affiliation(s)
- Yuki Nakamura
- Laboratory of Organic Chemistry for Drug Development and Medical Research Laboratories, Department of Pharmaceutical Sciences, Kitasato University, Tokyo 108-8641, Japan
| | - Kazuma Irisawa
- Laboratory of Organic Chemistry for Molecular Transformations, Department of Chemistry and the Institute of Natural Sciences, Nihon University, Tokyo 156-8550, Japan
| | - Kazuishi Makino
- Laboratory of Organic Chemistry for Drug Development and Medical Research Laboratories, Department of Pharmaceutical Sciences, Kitasato University, Tokyo 108-8641, Japan
| | - Naoyuki Shimada
- Laboratory of Organic Chemistry for Molecular Transformations, Department of Chemistry and the Institute of Natural Sciences, Nihon University, Tokyo 156-8550, Japan
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6
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Jdanova S, Taylor MS. Mechanistic Study of the Copper(II)-Mediated Site-Selective O-Arylation of Glycosides with Arylboronic Acids. J Org Chem 2023; 88:3487-3498. [PMID: 36888595 DOI: 10.1021/acs.joc.2c02693] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/09/2023]
Abstract
Glycosides having multiple free OH groups have been shown to undergo site-selective O-arylations in the presence of arylboronic acids and copper(II) acetate. Herein, a mechanistic analysis of these Chan-Evans-Lam-type couplings is presented based on reaction kinetics, mass spectrometric analysis of reaction mixtures, and substituent effect studies. The results establish that the formation of a substrate-derived boronic ester accelerates the rate-determining transmetalation step. Intramolecular transfer of the aryl group from the boronic ester is ruled out in favor of a pathway in which the key pre-transmetalation assembly is generated from a boronic ester, a copper complex, and a second equivalent of arylboronic acid.
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Affiliation(s)
- Sofia Jdanova
- Department of Chemistry, University of Toronto, Toronto, Ontario M5S 3H6 Canada
| | - Mark S Taylor
- Department of Chemistry, University of Toronto, Toronto, Ontario M5S 3H6 Canada
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7
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Rao VUB, Wang C, Demarque DP, Grassin C, Otte F, Merten C, Strohmann C, Loh CCJ. A synergistic Rh(I)/organoboron-catalysed site-selective carbohydrate functionalization that involves multiple stereocontrol. Nat Chem 2023; 15:424-435. [PMID: 36585443 PMCID: PMC9986112 DOI: 10.1038/s41557-022-01110-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2021] [Accepted: 11/16/2022] [Indexed: 12/31/2022]
Abstract
Site-selective functionalization is a core synthetic strategy that has broad implications in organic synthesis. Particularly, exploiting chiral catalysis to control site selectivity in complex carbohydrate functionalizations has emerged as a leading method to unravel unprecedented routes into biologically relevant glycosides. However, robust catalytic systems available to overcome multiple facets of stereoselectivity challenges to this end still remain scarce. Here we report a synergistic chiral Rh(I)- and organoboron-catalysed protocol, which enables access into synthetically challenging but biologically relevant arylnaphthalene glycosides. Our method depicts the employment of chiral Rh(I) catalysis in site-selective carbohydrate functionalization and showcases the utility of boronic acid as a compatible co-catalyst. Crucial to the success of our method is the judicious choice of a suitable organoboron catalyst. We also determine that exquisite multiple aspects of stereocontrol, including enantio-, diastereo-, regio- and anomeric control and dynamic kinetic resolution, are concomitantly operative.
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Affiliation(s)
- V U Bhaskara Rao
- Abteilung Chemische Biologie, Max Planck Institut für Molekulare Physiologie, Dortmund, Germany.,Fakültät für Chemie und Chemische Biologie, Technische Universität Dortmund, Dortmund, Germany
| | - Caiming Wang
- Abteilung Chemische Biologie, Max Planck Institut für Molekulare Physiologie, Dortmund, Germany.,Fakültät für Chemie und Chemische Biologie, Technische Universität Dortmund, Dortmund, Germany
| | | | | | - Felix Otte
- Department of Inorganic Chemistry, Technische Universität Dortmund, Dortmund, Germany
| | | | - Carsten Strohmann
- Department of Inorganic Chemistry, Technische Universität Dortmund, Dortmund, Germany
| | - Charles C J Loh
- Abteilung Chemische Biologie, Max Planck Institut für Molekulare Physiologie, Dortmund, Germany. .,Fakültät für Chemie und Chemische Biologie, Technische Universität Dortmund, Dortmund, Germany.
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8
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Similarities and Differences between Site-Selective Acylation and Phosphorylation of Amphiphilic Diols, Promoted by Nucleophilic Organocatalysts Decorated with Outer-Sphere Appendages. Catalysts 2023. [DOI: 10.3390/catal13020361] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2023] Open
Abstract
We demonstrated recently that organocatalysts, based on a nucleophilic core (N-alkylimidazole or 4-aminopyridine) and decorated with an extensive secondary-sphere envelope (connected to the core through a benzyl substituent), strongly affect the site selectivity in acylation and phosphorylation of amphiphilic diols, sometimes entirely overriding the innate predisposition of the substrate. Preliminary studies pointed out that, despite some similarities, there are differences between the two transformations, regarding the influence of various catalyst features on the selectivity. To fully elucidate this, extended families of organocatalysts of the said design were examined, activity- and selectivity-wise, in the abovementioned transformations of model alcohol and amphiphilic diol substrates. A comparison of the influence of the catalyst design on the two reactions revealed that while the inductive electron donation of the o,o-dialkoxybenzyl substituent of the core, combined with the catalytic intermediate-stabilizing influence of some of the secondary-sphere components, causes an increase in the catalyst activity in both reactions and in the site selectivity in phosphorylation, its effect on the site selectivity in acylation is opposite. On the other hand, the lipophilicity of the secondary-sphere appendages improves the apolar site-favoring selectivity in both reactions. Thus, both factors work in concert in phosphorylation, but in opposite directions in acylation.
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9
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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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10
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Norman JP, Neufeldt SR. The Road Less Traveled: Unconventional Site Selectivity in Palladium-Catalyzed Cross-Couplings of Dihalogenated N-Heteroarenes. ACS Catal 2022; 12:12014-12026. [PMID: 36741273 PMCID: PMC9894105 DOI: 10.1021/acscatal.2c03743] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The vast majority (≥90%) of literature reports agree on the regiochemical outcomes of Pd-catalyzed cross-coupling reactions for most classes of dihalogenated N-heteroarenes. Despite a well-established mechanistic rationale for typical selectivity, several examples reveal that changes to the catalyst can switch site selectivity, leading to the unconventional product. In this Perspective, we survey these unusual cases in which divergent selectivity is controlled by ligands or catalyst speciation. In some cases, the mechanistic origin of inverted selectivity has been established, but in others the mechanism remains unknown. This Perspective concludes with a discussion of remaining challenges and opportunities for the field of site-selective cross-coupling. These include developing a better understanding of oxidative addition mechanisms, understanding the role of catalyst speciation on selectivity, establishing an explanation for the influence of ring substituents on regiochemical outcome, inverting selectivity for some "stubborn" classes of substrates, and minimizing unwanted over-reaction of di- and polyhalogenated substrates.
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Affiliation(s)
- Jacob P. Norman
- Department of Chemistry and Biochemistry, Montana State University, Bozeman, Montana 59717, United States
| | - Sharon R. Neufeldt
- Department of Chemistry and Biochemistry, Montana State University, Bozeman, Montana 59717, United States
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11
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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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12
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Lv J, Liu CY, Guo YF, Feng GJ, Dong H. SnCl2‐catalyzed acetalation/selective‐benzoylation sequence for the synthesis of orthogonally protected glycosyl acceptors. European J Org Chem 2022. [DOI: 10.1002/ejoc.202101565] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Jian Lv
- Huazhong University of Science and Technology - Main Campus: Huazhong University of Science and Technology School of Chemistry and Chemical Engineering CHINA
| | - Chun-Yang Liu
- Huazhong University of Science and Technology - Main Campus: Huazhong University of Science and Technology School of Chemistry and Chemical Engineering CHINA
| | - Yang-Fan Guo
- Huazhong University of Science and Technology - Main Campus: Huazhong University of Science and Technology School of Chemistry and Chemical Engineering CHINA
| | - Guang-Jing Feng
- Huazhong University of Science and Technology - Main Campus: Huazhong University of Science and Technology School of Chemistry and Chemical Engineering CHINA
| | - Hai Dong
- Huazhong University of Science and Technology - Main Campus: Huazhong University of Science and Technology School of Chemistry & Chemical Engineering Luoyu Road 1037 430074 Wuhan CHINA
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13
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Sun T, Zhang Y, Meng Y, Wang Y, Zhu Q, Jiang Y, Liu S. Photoredox-Copper Dual-Catalyzed Site-Selective O-Alkylation of Glycosides. CHINESE J ORG CHEM 2022. [DOI: 10.6023/cjoc202112029] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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14
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Ni J, Liu Y, Hong H, Kong X, Han Y, Zhang L, Zhang Y, Zhang Y, Hua C, Wang Q, Wang X, Huang Y, YiKun W, Meili D. A novel fluorescent digitonin derivative for non-invasive skin cholesterol detection: potential application in atherosclerosis screening. RSC Adv 2022; 12:18397-18406. [PMID: 35799936 PMCID: PMC9214714 DOI: 10.1039/d2ra01982e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Accepted: 05/27/2022] [Indexed: 12/03/2022] Open
Abstract
There is a great demand for the rapid and non-invasive atherosclerosis screening method. Cholesterol content in the epidermis of the skin is an early biomarker for atherosclerosis. Risk assessment of atherosclerosis can be achieved by measuring cholesterol in the epidermis. Here, we synthesised a new fluorescent digitonin derivative (FDD) for the non-invasive detection of skin cholesterol. The results of fluorescence spectroscopy studies indicated that the probe exhibited desirable selectivity for cholesterol. The proof-of-concept preclinical study confirmed that FDD can detect different concentrations of skin cholesterol; patients diagnosed with atherosclerotic cardiovascular disease and the at-risk atherosclerosis group exhibited higher skin cholesterol content than the normal group. The area under the ROC curve for distinguishing the normal/disease group was 0.9228 (95% confidence interval, 0.8938 to 0.9518), and the area under the ROC curve for distinguishing the normal/risk group was 0.9422 (95% confidence interval, 0.9178 to 0.9665). We anticipate that this non-invasive skin cholesterol test may be used as a risk assessment tool for atherosclerosis screening in a large population for further examination and intervention in high-risk populations. Digitonin was used to synthesise a fluorescence probe for the non-invasive detection of skin cholesterol. This non-invasive skin cholesterol method may be used as a risk assessment tool for atherosclerosis screening in a large population.![]()
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Affiliation(s)
- Jingshu Ni
- Anhui Provincial Engineering Technology Research Center for Biomedical Optical Instrument, Anhui Provincial Engineering Laboratory for Medical Optical Diagnosis &Treatment Technology and Instrument, Anhui Institute of Optics and Fine Mechanics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, 230031, China
- University of Science and Technology of China, Hefei, 230026, China
| | - Yong Liu
- Anhui Provincial Engineering Technology Research Center for Biomedical Optical Instrument, Anhui Provincial Engineering Laboratory for Medical Optical Diagnosis &Treatment Technology and Instrument, Anhui Institute of Optics and Fine Mechanics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, 230031, China
- University of Science and Technology of China, Hefei, 230026, China
- Wanjiang Center for Development of Emerging Industrial Technology, Tongling, 244000, China
| | - Haiou Hong
- The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, 230001, China
| | - Xiangyong Kong
- The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, 230001, China
| | - Yongsheng Han
- The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, 230001, China
| | - Lei Zhang
- Anhui Provincial Institute for Food and Drug Control, Hefei, 230051, China
| | - Yang Zhang
- Anhui Provincial Engineering Technology Research Center for Biomedical Optical Instrument, Anhui Provincial Engineering Laboratory for Medical Optical Diagnosis &Treatment Technology and Instrument, Anhui Institute of Optics and Fine Mechanics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, 230031, China
- University of Science and Technology of China, Hefei, 230026, China
| | - Yuanzhi Zhang
- Anhui Provincial Engineering Technology Research Center for Biomedical Optical Instrument, Anhui Provincial Engineering Laboratory for Medical Optical Diagnosis &Treatment Technology and Instrument, Anhui Institute of Optics and Fine Mechanics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, 230031, China
- Wanjiang Center for Development of Emerging Industrial Technology, Tongling, 244000, China
| | - Changyi Hua
- Anhui Provincial Engineering Technology Research Center for Biomedical Optical Instrument, Anhui Provincial Engineering Laboratory for Medical Optical Diagnosis &Treatment Technology and Instrument, Anhui Institute of Optics and Fine Mechanics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, 230031, China
| | - Quanfu Wang
- Anhui Provincial Engineering Technology Research Center for Biomedical Optical Instrument, Anhui Provincial Engineering Laboratory for Medical Optical Diagnosis &Treatment Technology and Instrument, Anhui Institute of Optics and Fine Mechanics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, 230031, China
| | - Xia Wang
- Anhui Provincial Engineering Technology Research Center for Biomedical Optical Instrument, Anhui Provincial Engineering Laboratory for Medical Optical Diagnosis &Treatment Technology and Instrument, Anhui Institute of Optics and Fine Mechanics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, 230031, China
| | - Yao Huang
- Anhui Provincial Engineering Technology Research Center for Biomedical Optical Instrument, Anhui Provincial Engineering Laboratory for Medical Optical Diagnosis &Treatment Technology and Instrument, Anhui Institute of Optics and Fine Mechanics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, 230031, China
- Wanjiang Center for Development of Emerging Industrial Technology, Tongling, 244000, China
| | - Wang YiKun
- Anhui Provincial Engineering Technology Research Center for Biomedical Optical Instrument, Anhui Provincial Engineering Laboratory for Medical Optical Diagnosis &Treatment Technology and Instrument, Anhui Institute of Optics and Fine Mechanics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, 230031, China
- Wanjiang Center for Development of Emerging Industrial Technology, Tongling, 244000, China
| | - Dong Meili
- Anhui Provincial Engineering Technology Research Center for Biomedical Optical Instrument, Anhui Provincial Engineering Laboratory for Medical Optical Diagnosis &Treatment Technology and Instrument, Anhui Institute of Optics and Fine Mechanics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, 230031, China
- Wanjiang Center for Development of Emerging Industrial Technology, Tongling, 244000, China
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15
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Exploiting non-covalent interactions in selective carbohydrate synthesis. Nat Rev Chem 2021; 5:792-815. [PMID: 37117666 DOI: 10.1038/s41570-021-00324-y] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/10/2021] [Indexed: 02/08/2023]
Abstract
Non-covalent interactions (NCIs) are a vital component of biological bond-forming events, and have found important applications in multiple branches of chemistry. In recent years, the biomimetic exploitation of NCIs in challenging glycosidic bond formation and glycofunctionalizations has attracted significant interest across diverse communities of organic and carbohydrate chemists. This emerging theme is a major new direction in contemporary carbohydrate chemistry, and is rapidly gaining traction as a robust strategy to tackle long-standing issues such as anomeric and site selectivity. This Review thus seeks to provide a bird's-eye view of wide-ranging advances in harnessing NCIs within the broad field of synthetic carbohydrate chemistry. These include the exploitation of NCIs in non-covalent catalysed glycosylations, in non-covalent catalysed glycofunctionalizations, in aglycone delivery, in stabilization of intermediates and transition states, in the existence of intramolecular hydrogen bonding networks and in aggregation by hydrogen bonds. In addition, recent emerging opportunities in exploiting halogen bonding and other unconventional NCIs, such as CH-π, cation-π and cation-n interactions, in various aspects of carbohydrate chemistry are also examined.
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16
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Ghosh S, Khandelia T, Patel BK. Solvent-Switched Manganese(I)-Catalyzed Regiodivergent Distal vs Proximal C-H Alkylation of Imidazopyridine with Maleimide. Org Lett 2021; 23:7370-7375. [PMID: 34543041 DOI: 10.1021/acs.orglett.1c02536] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A sustainable Mn(I)-catalyzed exclusive solvent-dependent functionalization of imidazopyridine with maleimide via an electrophilic metalation at the distal (in 2,2,2-trifluoroethanol (TFE)) and chelation assisted at the proximal (in tetrahydrofuran (THF)) has been developed. The strategy was successfully applied to the drug Zolimidine and a broad range of substrates, thereby reflecting the method's versatility.
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Affiliation(s)
- Subhendu Ghosh
- Department of Chemistry, Indian Institute of Technology Guwahati, North Guwahati 781039, India
| | - Tamanna Khandelia
- Department of Chemistry, Indian Institute of Technology Guwahati, North Guwahati 781039, India
| | - Bhisma K Patel
- Department of Chemistry, Indian Institute of Technology Guwahati, North Guwahati 781039, India
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17
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Shimada N, Sugimoto T, Noguchi M, Ohira C, Kuwashima Y, Takahashi N, Sato N, Makino K. Boronic Acid-Catalyzed Regioselective Koenigs-Knorr-Type Glycosylation. J Org Chem 2021; 86:5973-5982. [PMID: 33829786 DOI: 10.1021/acs.joc.1c00130] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Boronic acid-catalyzed regioselective Koenigs-Knorr-type glycosylation is presented. The reaction of an unprotected or partially protected glycosyl acceptor with a glycosyl halide donor in the presence of silver oxide and a low catalytic amount of imidazole-containing boronic acid was found to proceed smoothly, which enables construction of a 1,2-trans glycosidic linkage with high regioselectivities. This is the first example of the use of a boronic acid catalyst to initiate regioselective glycosylation via the activation of cis-vicinal diols in glycosyl acceptors.
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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
| | - Tomoya Sugimoto
- Laboratory of Organic Chemistry for Drug Development and Medical Research Laboratories, Department of Pharmaceutical Sciences, Kitasato University, Tokyo 108-8641, Japan
| | - Mao Noguchi
- Laboratory of Organic Chemistry for Drug Development and Medical Research Laboratories, Department of Pharmaceutical Sciences, Kitasato University, Tokyo 108-8641, Japan
| | - Chikako Ohira
- Laboratory of Organic Chemistry for Drug Development and Medical Research Laboratories, Department of Pharmaceutical Sciences, Kitasato University, Tokyo 108-8641, Japan
| | - Yutaro Kuwashima
- Laboratory of Organic Chemistry for Drug Development and Medical Research Laboratories, Department of Pharmaceutical Sciences, Kitasato University, Tokyo 108-8641, Japan
| | - Naoya Takahashi
- Laboratory of Organic Chemistry for Drug Development and Medical Research Laboratories, Department of Pharmaceutical Sciences, Kitasato University, Tokyo 108-8641, Japan
| | - Noriko Sato
- 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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18
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Zhao K, Yang S, Gong Q, Duan L, Gu Z. Diols Activation by Cu/Borinic Acids Synergistic Catalysis in Atroposelective Ring‐Opening of Cyclic Diaryliodoniums. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202014127] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Kun Zhao
- Hefei National Laboratory for Physical Sciences at the Microscale, and Department of Chemistry Center for Excellence in Molecular Synthesis University of Science and Technology of China 96 Jinzhai Road Hefei Anhui 230026 P. R. China
| | - Shan Yang
- Hefei National Laboratory for Physical Sciences at the Microscale, and Department of Chemistry Center for Excellence in Molecular Synthesis University of Science and Technology of China 96 Jinzhai Road Hefei Anhui 230026 P. R. China
| | - Qi Gong
- Hefei National Laboratory for Physical Sciences at the Microscale, and Department of Chemistry Center for Excellence in Molecular Synthesis University of Science and Technology of China 96 Jinzhai Road Hefei Anhui 230026 P. R. China
| | - Longhui Duan
- Hefei National Laboratory for Physical Sciences at the Microscale, and Department of Chemistry Center for Excellence in Molecular Synthesis University of Science and Technology of China 96 Jinzhai Road Hefei Anhui 230026 P. R. China
| | - Zhenhua Gu
- Hefei National Laboratory for Physical Sciences at the Microscale, and Department of Chemistry Center for Excellence in Molecular Synthesis University of Science and Technology of China 96 Jinzhai Road Hefei Anhui 230026 P. R. China
- Ocean College Minjiang University Fuzhou Fujian 350108 P. R. China
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19
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Zhao K, Yang S, Gong Q, Duan L, Gu Z. Diols Activation by Cu/Borinic Acids Synergistic Catalysis in Atroposelective Ring‐Opening of Cyclic Diaryliodoniums. Angew Chem Int Ed Engl 2021; 60:5788-5793. [DOI: 10.1002/anie.202014127] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Indexed: 12/17/2022]
Affiliation(s)
- Kun Zhao
- Hefei National Laboratory for Physical Sciences at the Microscale, and Department of Chemistry Center for Excellence in Molecular Synthesis University of Science and Technology of China 96 Jinzhai Road Hefei Anhui 230026 P. R. China
| | - Shan Yang
- Hefei National Laboratory for Physical Sciences at the Microscale, and Department of Chemistry Center for Excellence in Molecular Synthesis University of Science and Technology of China 96 Jinzhai Road Hefei Anhui 230026 P. R. China
| | - Qi Gong
- Hefei National Laboratory for Physical Sciences at the Microscale, and Department of Chemistry Center for Excellence in Molecular Synthesis University of Science and Technology of China 96 Jinzhai Road Hefei Anhui 230026 P. R. China
| | - Longhui Duan
- Hefei National Laboratory for Physical Sciences at the Microscale, and Department of Chemistry Center for Excellence in Molecular Synthesis University of Science and Technology of China 96 Jinzhai Road Hefei Anhui 230026 P. R. China
| | - Zhenhua Gu
- Hefei National Laboratory for Physical Sciences at the Microscale, and Department of Chemistry Center for Excellence in Molecular Synthesis University of Science and Technology of China 96 Jinzhai Road Hefei Anhui 230026 P. R. China
- Ocean College Minjiang University Fuzhou Fujian 350108 P. R. China
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20
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Cornil J, Hu Z, Bouchet M, Mulard LA. Multigram synthesis of an orthogonally-protected pentasaccharide for use as a glycan precursor in a Shigella flexneri 3a conjugate vaccine: application to a ready-for-conjugation decasaccharide. Org Chem Front 2021. [DOI: 10.1039/d1qo00761k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Fine-tuned catalytic processes facilitating regio- and stereoselective conversions for the large-scale synthesis of a pentasaccharide and its oligomerization into ready-for-conjugation haptens.
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Affiliation(s)
- Johan Cornil
- Unité de Chimie des Biomolécules, Institut Pasteur, UMR3523 CNRS, 28 rue du Dr Roux, 75 724 Paris Cedex 15, France
| | - Zhaoyu Hu
- Unité de Chimie des Biomolécules, Institut Pasteur, UMR3523 CNRS, 28 rue du Dr Roux, 75 724 Paris Cedex 15, France
| | - Marion Bouchet
- Unité de Chimie des Biomolécules, Institut Pasteur, UMR3523 CNRS, 28 rue du Dr Roux, 75 724 Paris Cedex 15, France
| | - Laurence A. Mulard
- Unité de Chimie des Biomolécules, Institut Pasteur, UMR3523 CNRS, 28 rue du Dr Roux, 75 724 Paris Cedex 15, France
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21
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Dong M, Jia Y, Zhou W, Gao J, Lv X, Luo F, Zhang Y, Liu S. A photoredox/nickel dual-catalytic strategy for benzylic C–H alkoxylation. Org Chem Front 2021. [DOI: 10.1039/d1qo01421h] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Reported herein is a photoredox/nickel dual-catalyzed benzylic C–H alkoxylation and the protocol features broad substrate scope and excellent functional group compatibility.
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Affiliation(s)
- Min Dong
- College of Medicine, Jiaxing University, 118 Jiahang Road, Jiaxing 314001, P. R. China
| | - Yuqi Jia
- College of Medicine, Jiaxing University, 118 Jiahang Road, Jiaxing 314001, P. R. China
| | - Wei Zhou
- College of Medicine, Jiaxing University, 118 Jiahang Road, Jiaxing 314001, P. R. China
| | - Jinlai Gao
- College of Medicine, Jiaxing University, 118 Jiahang Road, Jiaxing 314001, P. R. China
| | - Xiaoqing Lv
- College of Medicine, Jiaxing University, 118 Jiahang Road, Jiaxing 314001, P. R. China
| | - Fan Luo
- School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, P. R. China
| | - Yongqiang Zhang
- School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, P. R. China
| | - Shihui Liu
- College of Medicine, Jiaxing University, 118 Jiahang Road, Jiaxing 314001, P. R. China
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22
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Shang W, Su SN, Shi R, Mou ZD, Yu GQ, Zhang X, Niu D. Generation of Glycosyl Radicals from Glycosyl Sulfoxides and Its Use in the Synthesis of C-linked Glycoconjugates. Angew Chem Int Ed Engl 2020; 60:385-390. [PMID: 32935426 DOI: 10.1002/anie.202009828] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Revised: 09/08/2020] [Indexed: 02/05/2023]
Abstract
We here report glycosyl sulfoxides appended with an aryl iodide moiety as readily available, air and moisture stable precursors to glycosyl radicals. These glycosyl sulfoxides could be converted to glycosyl radicals by way of a rapid and efficient intramolecular radical substitution event. The use of this type of precursors enabled the synthesis of various complex C-linked glycoconjugates under mild conditions. This reaction could be performed in aqueous media and is amenable to the synthesis of glycopeptidomimetics and carbohydrate-DNA conjugates.
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Affiliation(s)
- Weidong Shang
- Department of Emergency, State Key Laboratory of Biotherapy, West China Hospital, and School of Chemical Engineering, Sichuan University, No. 17 Renmin Nan Road, Chengdu, 610041, China
| | - Sheng-Nan Su
- Department of Emergency, State Key Laboratory of Biotherapy, West China Hospital, and School of Chemical Engineering, Sichuan University, No. 17 Renmin Nan Road, Chengdu, 610041, China
| | - Rong Shi
- Department of Emergency, State Key Laboratory of Biotherapy, West China Hospital, and School of Chemical Engineering, Sichuan University, No. 17 Renmin Nan Road, Chengdu, 610041, China
| | - Ze-Dong Mou
- Department of Emergency, State Key Laboratory of Biotherapy, West China Hospital, and School of Chemical Engineering, Sichuan University, No. 17 Renmin Nan Road, Chengdu, 610041, China
| | - Guo-Qiang Yu
- Discovery Chemistry Unit, HitGen Inc., Building 6, No. Huigu 1st East Road, Tianfu International Bio-Town, Shuangliu District, Chengdu, 610200, China
| | - Xia Zhang
- Department of Emergency, State Key Laboratory of Biotherapy, West China Hospital, and School of Chemical Engineering, Sichuan University, No. 17 Renmin Nan Road, Chengdu, 610041, China
| | - Dawen Niu
- Department of Emergency, State Key Laboratory of Biotherapy, West China Hospital, and School of Chemical Engineering, Sichuan University, No. 17 Renmin Nan Road, Chengdu, 610041, China
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23
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Shang W, Su S, Shi R, Mou Z, Yu G, Zhang X, Niu D. Generation of Glycosyl Radicals from Glycosyl Sulfoxides and Its Use in the Synthesis of
C
‐linked Glycoconjugates. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202009828] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Weidong Shang
- Department of Emergency State Key Laboratory of Biotherapy, West China Hospital, and School of Chemical Engineering Sichuan University No. 17 Renmin Nan Road Chengdu 610041 China
| | - Sheng‐Nan Su
- Department of Emergency State Key Laboratory of Biotherapy, West China Hospital, and School of Chemical Engineering Sichuan University No. 17 Renmin Nan Road Chengdu 610041 China
| | - Rong Shi
- Department of Emergency State Key Laboratory of Biotherapy, West China Hospital, and School of Chemical Engineering Sichuan University No. 17 Renmin Nan Road Chengdu 610041 China
| | - Ze‐Dong Mou
- Department of Emergency State Key Laboratory of Biotherapy, West China Hospital, and School of Chemical Engineering Sichuan University No. 17 Renmin Nan Road Chengdu 610041 China
| | - Guo‐Qiang Yu
- Discovery Chemistry Unit HitGen Inc. Building 6, No. Huigu 1st East Road, Tianfu International Bio-Town, Shuangliu District Chengdu 610200 China
| | - Xia Zhang
- Department of Emergency State Key Laboratory of Biotherapy, West China Hospital, and School of Chemical Engineering Sichuan University No. 17 Renmin Nan Road Chengdu 610041 China
| | - Dawen Niu
- Department of Emergency State Key Laboratory of Biotherapy, West China Hospital, and School of Chemical Engineering Sichuan University No. 17 Renmin Nan Road Chengdu 610041 China
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24
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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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25
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Bhardwaj M, Hussain N, Zargar IA, Dash AK, Mukherjee D. Synthesis of aryl ethers of carbohydrates via reaction with arynes: selective O-arylation of trans-vicinal dihydroxyl groups in carbohydrates. Org Biomol Chem 2020; 18:4174-4177. [PMID: 32441290 DOI: 10.1039/d0ob00540a] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
A new method for the O-arylation of carbohydrates under metal-free conditions using arynes as an aryl source has been developed. This approach works well with mono, di and trihydroxy compounds. Preferential O-arylation takes place at primary over secondary and equatorial over axial. Site-selective O-arylation was achieved with the substrate having trans vicinal diequatorial hydroxyls.
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Affiliation(s)
- Monika Bhardwaj
- Natural Product Chemistry Division, Indian Institute of Integrative Medicine, Jammu-180001, India. and Academy of Scientific and Innovative Research (AcSIR), Ghaziabad - 201002, India
| | - Nazar Hussain
- Natural Product Chemistry Division, Indian Institute of Integrative Medicine, Jammu-180001, India. and Academy of Scientific and Innovative Research (AcSIR), Ghaziabad - 201002, India
| | - Irshad Ahmad Zargar
- Natural Product Chemistry Division, Indian Institute of Integrative Medicine, Jammu-180001, India. and Academy of Scientific and Innovative Research (AcSIR), Ghaziabad - 201002, India
| | - Ashutosh K Dash
- Natural Product Chemistry Division, Indian Institute of Integrative Medicine, Jammu-180001, India. and Department of Pharmaceutical Chemistry, School of Pharmaceutical Sciences, Shoolini University, Solan, Himachal Pradesh 173229, India
| | - Debaraj Mukherjee
- Natural Product Chemistry Division, Indian Institute of Integrative Medicine, Jammu-180001, India. and Academy of Scientific and Innovative Research (AcSIR), Ghaziabad - 201002, India
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26
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Ashush N, Fallek R, Fallek A, Dobrovetsky R, Portnoy M. Base- and Catalyst-Induced Orthogonal Site Selectivities in Acylation of Amphiphilic Diols. Org Lett 2020; 22:3749-3754. [PMID: 32330055 DOI: 10.1021/acs.orglett.0c00830] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Seeking to selectively functionalize natural and synthetic amphiphiles, we explored acylation of model amphiphilic diols. The use of a nucleophilic catalyst enabled a remarkable shift of the site selectivity from the polar site, preferred in background noncatalyzed or base-promoted reactions, to the apolar site. This tendency was significantly enhanced for organocatalysts comprising an imidazole active site surrounded by long/branched tails. An explanation of these orthogonal modes of selectivity is supported by competitive experiments with monoalcohol substrates.
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Affiliation(s)
- Natali Ashush
- School of Chemistry, Raymond and Beverly Sackler Faculty of Exact Sciences, Tel Aviv University, Tel Aviv 6997801, Israel
| | - Reut Fallek
- School of Chemistry, Raymond and Beverly Sackler Faculty of Exact Sciences, Tel Aviv University, Tel Aviv 6997801, Israel
| | - Amit Fallek
- School of Chemistry, Raymond and Beverly Sackler Faculty of Exact Sciences, Tel Aviv University, Tel Aviv 6997801, Israel
| | - Roman Dobrovetsky
- School of Chemistry, Raymond and Beverly Sackler Faculty of Exact Sciences, Tel Aviv University, Tel Aviv 6997801, Israel
| | - Moshe Portnoy
- School of Chemistry, Raymond and Beverly Sackler Faculty of Exact Sciences, Tel Aviv University, Tel Aviv 6997801, Israel
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27
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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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28
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Glazier DA, Schroeder JM, Blaszczyk SA, Tang W. Site‐ and Stereoselective Phosphoramidation of Carbohydrates Using a Chiral Catalyst and a Chiral Electrophile. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201900382] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Daniel A. Glazier
- School of PharmacyUniversity of Wisconsin-Madison Madison WI 53705 USA Phone: (608) 890-1846, Fax: (608) 262-5345
- Department of ChemistryUniversity of Wisconsin-Madison Madison WI 53705 USA
| | - John M. Schroeder
- School of PharmacyUniversity of Wisconsin-Madison Madison WI 53705 USA Phone: (608) 890-1846, Fax: (608) 262-5345
| | - Stephanie A. Blaszczyk
- School of PharmacyUniversity of Wisconsin-Madison Madison WI 53705 USA Phone: (608) 890-1846, Fax: (608) 262-5345
- Department of ChemistryUniversity of Wisconsin-Madison Madison WI 53705 USA
| | - Weiping Tang
- School of PharmacyUniversity of Wisconsin-Madison Madison WI 53705 USA Phone: (608) 890-1846, Fax: (608) 262-5345
- Department of ChemistryUniversity of Wisconsin-Madison Madison WI 53705 USA
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29
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Dimakos V, Liu JJW, Ge Z, Taylor MS. Copper-mediated anomeric O-arylation with organoboron reagents. Org Biomol Chem 2019; 17:5671-5674. [PMID: 31123748 DOI: 10.1039/c9ob01022j] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Copper-mediated couplings of arylboroxines with glycosyl hemiacetals furnish O-aryl glycosides via Csp2-O bond formation. The method enables the anomeric O-arylation of protected pyranose and furanose derivatives, and is tolerant of functionalized arylboroxine partners. Whereas mixtures of anomers are formed from glucopyranose, galactopyranose and arabinofuranose hemiacetals, the α-anomer is generated selectively from mannopyranose and mannofuranose-derived substrates.
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Affiliation(s)
- Victoria Dimakos
- Department of Chemistry, University of Toronto, 80 St. George St., Toronto, ON, M5S 3H6 Canada.
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