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Li T, Li T, Yang Y, Qiu Y, Liu Y, Zhang M, Zhuang H, Schmidt RR, Peng P. Reaction Rate and Stereoselectivity Enhancement in Glycosidations with O-Glycosyl Trihaloacetimidate Donors due to Catalysis by a Lewis Acid-Nitrile Cooperative Effect. J Org Chem 2024. [PMID: 38805026 DOI: 10.1021/acs.joc.4c00554] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/29/2024]
Abstract
Activation of O-glycosyl trihaloacetimidate glycosyl donors with AuCl3 as a catalyst and pivalonitrile (tBuCN) as a ligand led to excellent glycosidation results in terms of yield and anomeric selectivity. In this way, various β-d-gluco- and β-d-galactopyranosides were obtained conveniently and efficiently. Experimental studies and density functional theory (DFT) calculations, in order to elucidate the reaction course, support formation of the tBuCN-AuCl2-OR(H)+ AuCl4- complex as a decisive intermediate in the glycosidation event. Proton transfer from this acceptor complex to the imidate nitrogen leads to donor activation. In this way, guided by the C-2 configuration of the glycosyl donor, the alignment of the acceptor complex enforces the stereoselective β-glycoside formation in an intramolecular fashion, thus promoting also a fast reaction course. The high stereocontrol of this novel 'Lewis acid-nitrile cooperative effect' is independent of the glycosyl donor anomeric configuration and without the support of neighboring group or remote group participation. The power of the methodology is shown by a successful glycoalkaloid solamargine synthesis.
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Affiliation(s)
- Tianlu Li
- National Glycoengineering Research Center, Shandong Technology Innovation Center of Carbohydrate, NMPA Key Laboratory for Quality Research and Evaluation of Carbohydrate Based Medicine, Key Laboratory of Chemical Biology (Ministry of Education), Shandong University, Shandong 266237, China
| | - Tong Li
- National Glycoengineering Research Center, Shandong Technology Innovation Center of Carbohydrate, NMPA Key Laboratory for Quality Research and Evaluation of Carbohydrate Based Medicine, Key Laboratory of Chemical Biology (Ministry of Education), Shandong University, Shandong 266237, China
| | - Yue Yang
- National Glycoengineering Research Center, Shandong Technology Innovation Center of Carbohydrate, NMPA Key Laboratory for Quality Research and Evaluation of Carbohydrate Based Medicine, Key Laboratory of Chemical Biology (Ministry of Education), Shandong University, Shandong 266237, China
| | - Yongshun Qiu
- National Glycoengineering Research Center, Shandong Technology Innovation Center of Carbohydrate, NMPA Key Laboratory for Quality Research and Evaluation of Carbohydrate Based Medicine, Key Laboratory of Chemical Biology (Ministry of Education), Shandong University, Shandong 266237, China
| | - Yingguo Liu
- Division of Molecular Catalysis and Synthesis, Henan Institute of Advanced Technology, Zhengzhou University, Zhengzhou 450000, China
| | - Miaomiao Zhang
- National Glycoengineering Research Center, Shandong Technology Innovation Center of Carbohydrate, NMPA Key Laboratory for Quality Research and Evaluation of Carbohydrate Based Medicine, Key Laboratory of Chemical Biology (Ministry of Education), Shandong University, Shandong 266237, China
| | - Haoru Zhuang
- National Glycoengineering Research Center, Shandong Technology Innovation Center of Carbohydrate, NMPA Key Laboratory for Quality Research and Evaluation of Carbohydrate Based Medicine, Key Laboratory of Chemical Biology (Ministry of Education), Shandong University, Shandong 266237, China
| | - Richard R Schmidt
- Department of Chemistry, University of Konstanz, Konstanz D-78457, Germany
| | - Peng Peng
- National Glycoengineering Research Center, Shandong Technology Innovation Center of Carbohydrate, NMPA Key Laboratory for Quality Research and Evaluation of Carbohydrate Based Medicine, Key Laboratory of Chemical Biology (Ministry of Education), Shandong University, Shandong 266237, China
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2
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Desai SP, Yatzoglou G, Turner JA, Taylor MS. Boronic Acid-Catalyzed Regio- and Stereoselective N-Glycosylations of Purines and Other Azole Heterocycles: Access to Nucleoside Analogues. J Am Chem Soc 2024; 146:4973-4984. [PMID: 38330907 DOI: 10.1021/jacs.3c14434] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2024]
Abstract
In the presence of an arylboronic acid catalyst, azole-type heterocycles, including purines, tetrazoles, triazoles, indazoles, and benzo-fused congeners, undergo regio- and stereoselective N-glycosylations with furanosyl and pyranosyl trichloroacetimidate donors. The protocol, which does not require stoichiometric activators, specialized leaving groups, or drying agents, provides access to nucleoside analogues and enables late-stage N-glycosylation of azole-containing pharmaceutical agents. A mechanism involving simultaneous activation of the glycosyl donor and acceptor by the organoboron catalyst has been proposed, supported by kinetic analysis and computational modeling.
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Affiliation(s)
- Shrey P Desai
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6, Canada
| | - Giorgos Yatzoglou
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6, Canada
| | - Julia A Turner
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6, Canada
| | - Mark S Taylor
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6, Canada
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3
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López M, Huelgas G, Sánchez M, Armenta A, Mendoza A, Lozada-Ramírez JD, Anaya de Parrodi C. Use of Novel Homochiral Thioureas Camphor Derived as Asymmetric Organocatalysts in the Stereoselective Formation of Glycosidic Bonds. Molecules 2024; 29:811. [PMID: 38398563 PMCID: PMC10893146 DOI: 10.3390/molecules29040811] [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: 01/15/2024] [Revised: 02/01/2024] [Accepted: 02/05/2024] [Indexed: 02/25/2024] Open
Abstract
We synthesized six new camphor-derived homochiral thioureas 1-6, from commercially available (1R)-(-)-camphorquinone. These new compounds 1-6 were evaluated as asymmetric organocatalysts in the stereoselective formation of glycosidic bonds, with 2,3,4,6-tetra-O-benzyl-D-glucopyranosyl and 2,3,4,6-tetra-O-benzyl-D-galactopyranosyl trichloroacetimidates as donors, and several alcohols as glycosyl acceptors, such as methanol, ethanol, 1-propanol, 1-butanol, 1-octanol, iso-propanol, tert-butanol, cyclohexanol, phenol, 1-naphtol, and 2-naphtol. Optimization of the asymmetric glycosylation reaction was achieved by modifying reaction conditions such as solvent, additive, loading of catalyst, temperature, and time of reaction. The best result was obtained with 2,3,4,6-tetra-O-benzyl-D-galactopyranosyl trichloroacetimidates, using 15 mol% of organocatalyst 1, in the presence of 2 equiv of MeOH in solvent-free conditions at room temperature for 1.5 h, affording the glycosidic compound in a 99% yield and 1:73 α:β stereoselectivity; under the same reaction conditions, without using a catalyst, the obtained stereoselectivity was 1:35 α:β. Computational calculations prior to the formation of the products were modeled, using density functional theory, M06-2X/6-31G(d,p) and M06-2X/6-311++G(2d,2p) methods. We observed that the preference for β glycoside formation, through a stereoselective inverted substitution, relies on steric effects and the formation of hydrogen bonds between thiourea 1 and methanol in the complex formed.
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Affiliation(s)
- Mildred López
- Departamento de Ciencias Químico-Biológicas, Universidad de las Américas Puebla, Puebla 72810, Mexico; (M.L.); (G.H.); (J.D.L.-R.)
| | - Gabriela Huelgas
- Departamento de Ciencias Químico-Biológicas, Universidad de las Américas Puebla, Puebla 72810, Mexico; (M.L.); (G.H.); (J.D.L.-R.)
| | - Mario Sánchez
- Centro de Investigación en Materiales Avanzados S.C., Alianza Norte 202, PIIT, Apodaca 66628, Mexico; (M.S.); (A.A.)
| | - Adalid Armenta
- Centro de Investigación en Materiales Avanzados S.C., Alianza Norte 202, PIIT, Apodaca 66628, Mexico; (M.S.); (A.A.)
| | - Angel Mendoza
- Centro de Química, Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla, Puebla 72570, Mexico;
| | - José Daniel Lozada-Ramírez
- Departamento de Ciencias Químico-Biológicas, Universidad de las Américas Puebla, Puebla 72810, Mexico; (M.L.); (G.H.); (J.D.L.-R.)
| | - Cecilia Anaya de Parrodi
- Departamento de Ciencias Químico-Biológicas, Universidad de las Américas Puebla, Puebla 72810, Mexico; (M.L.); (G.H.); (J.D.L.-R.)
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Gao K, Qin Y, Liu S, Wang L, Xing R, Yu H, Chen X, Li P. A review of the preparation, derivatization and functions of glucosamine and N-acetyl-glucosamine from chitin. CARBOHYDRATE POLYMER TECHNOLOGIES AND APPLICATIONS 2023. [DOI: 10.1016/j.carpta.2023.100296] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2023] Open
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5
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Javed, Khanam A, Mandal PK. Glycosyl 3-Phenyl-4-pentenoates as Versatile Glycosyl Donors: Reactivity and Their Application in One-Pot Oligosaccharide Assemblies. J Org Chem 2022; 87:6710-6729. [PMID: 35522927 DOI: 10.1021/acs.joc.2c00404] [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
Both glycoconjugates and oligosaccharides are important biomolecules having significant roles in several biological processes, and a new strategy for their synthesis is crucial. Here, we report a versatile N-iodosuccinimide/trimethylsilyl triflate (NIS/TMSOTf) promoted glycosidation approach with shelf-stable 3-phenyl-4-pentenoate glycosyl as a donor for the efficient synthesis of O/C-glycosides with free alcohols, silylated alcohols, and C-type nucleophile acceptors in good to excellent yields. The mild activation conditions and outstanding reactivity of phenyl substituted pentenoate donors analogous to 4-pentenoate glycosyl donors enhance their applicability to various one-pot strategies for the synthesis of oligosaccharides, such as single-catalyst one-pot and acceptor reactivity-controlled one-pot strategies.
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Affiliation(s)
- Javed
- Medicinal and Process Chemistry Division, CSIR─Central Drug Research Institute, BS-10/1, Sector 10, Jankipuram Extension, Sitapur Road, P.O. Box 173, Lucknow 226031, India
| | - Ariza Khanam
- Medicinal and Process Chemistry Division, CSIR─Central Drug Research Institute, BS-10/1, Sector 10, Jankipuram Extension, Sitapur Road, P.O. Box 173, Lucknow 226031, 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 226031, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
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Yadav RN, Hossain MF, Das A, Srivastava AK, Banik BK. Organocatalysis: A recent development on stereoselective synthesis of o-glycosides. CATALYSIS REVIEWS 2022. [DOI: 10.1080/01614940.2022.2041303] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Ram Naresh Yadav
- Department of Chemistry, Faculty of Engineering & Technology, Veer Bahadur Singh Purvanchal University, Jaunpur, India
| | - Md. Firoj Hossain
- Department of Chemistry, University of North Bengal, Darjeeling, India
| | - Aparna Das
- Department of Mathematics and Natural Sciences, College of Sciences and Human Studies, Prince Mohammad Bin Fahd University, Khobar, Saudi Arabia
| | - Ashok Kumar Srivastava
- Department of Chemistry, Faculty of Engineering & Technology, Veer Bahadur Singh Purvanchal University, Jaunpur, India
| | - Bimal Krishna Banik
- Department of Mathematics and Natural Sciences, College of Sciences and Human Studies, Prince Mohammad Bin Fahd University, Khobar, Saudi Arabia
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Xiao K, Hu Y, Wan Y, Li X, Nie Q, Yan H, Wang L, Liao J, Liu D, Tu Y, Sun J, Codée JDC, Zhang Q. Hydrogen bond activated glycosylation under mild conditions. Chem Sci 2022; 13:1600-1607. [PMID: 35282639 PMCID: PMC8826775 DOI: 10.1039/d1sc05772c] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2021] [Accepted: 12/15/2021] [Indexed: 11/21/2022] Open
Abstract
Herein, we report a new glycosylation system for the highly efficient and stereoselective formation of glycosidic bonds using glycosyl N-phenyl trifluoroacetimidate (PTFAI) donors and a charged thiourea hydrogen-bond-donor catalyst. The glycosylation protocol features broad substrate scope, controllable stereoselectivity, good to excellent yields and exceptionally mild catalysis conditions. Benefitting from the mild reaction conditions, this new hydrogen bond-mediated glycosylation system in combination with a hydrogen bond-mediated aglycon delivery system provides a reliable method for the synthesis of challenging phenolic glycosides. In addition, a chemoselective glycosylation procedure was developed using different imidate donors (trichloroacetimidates, N-phenyl trifluoroacetimidates, N-4-nitrophenyl trifluoroacetimidates, benzoxazolyl imidates and 6-nitro-benzothiazolyl imidates) and it was applied for a trisaccharide synthesis through a novel one-pot single catalyst strategy. A mild glycosylation system was developed using glycosyl imidate donors and a charge-enhanced thiourea H-bond donor catalyst. The method can be used for the effective synthesis of O-, C-, S- and N-glycosides and chemoselective one-pot glycosylation.![]()
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Affiliation(s)
- Ke Xiao
- National Research Centre for Carbohydrate Synthesis, Jiangxi Normal University 99 Ziyang Avenue Nanchang 330022 China
| | - Yongxin Hu
- National Research Centre for Carbohydrate Synthesis, Jiangxi Normal University 99 Ziyang Avenue Nanchang 330022 China
| | - Yongyong Wan
- National Research Centre for Carbohydrate Synthesis, Jiangxi Normal University 99 Ziyang Avenue Nanchang 330022 China
| | - XinXin Li
- National Research Centre for Carbohydrate Synthesis, Jiangxi Normal University 99 Ziyang Avenue Nanchang 330022 China
| | - Qin Nie
- National Research Centre for Carbohydrate Synthesis, Jiangxi Normal University 99 Ziyang Avenue Nanchang 330022 China
| | - Hao Yan
- National Research Centre for Carbohydrate Synthesis, Jiangxi Normal University 99 Ziyang Avenue Nanchang 330022 China
| | - Liming Wang
- National Research Centre for Carbohydrate Synthesis, Jiangxi Normal University 99 Ziyang Avenue Nanchang 330022 China
| | - Jinxi Liao
- National Research Centre for Carbohydrate Synthesis, Jiangxi Normal University 99 Ziyang Avenue Nanchang 330022 China
| | - Deyong Liu
- National Research Centre for Carbohydrate Synthesis, Jiangxi Normal University 99 Ziyang Avenue Nanchang 330022 China
| | - Yuanhong Tu
- National Research Centre for Carbohydrate Synthesis, Jiangxi Normal University 99 Ziyang Avenue Nanchang 330022 China
| | - Jiansong Sun
- National Research Centre for Carbohydrate Synthesis, Jiangxi Normal University 99 Ziyang Avenue Nanchang 330022 China
| | - Jeroen D C Codée
- Leiden Institute of Chemistry, Leiden University Einsteinweg 55 2333 CC Leiden The Netherlands
| | - Qingju Zhang
- National Research Centre for Carbohydrate Synthesis, Jiangxi Normal University 99 Ziyang Avenue Nanchang 330022 China .,Key Laboratory of Functional Small Molecule, Ministry of Education, Jiangxi Normal University 99 Ziyang Avenue Nanchang 330022 China
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Gallier F, E Miranda LSDM. Organocatalysis applied to carbohydrates: from roots to current developments. Org Biomol Chem 2021; 20:919-933. [PMID: 34931627 DOI: 10.1039/d1ob01919h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Organocatalysis emerged in the last decade as a powerful tool for the synthesis of complex molecules. In the field of carbohydrates, it found widespread use in the synthesis of rare and non-natural carbohydrate derivatives. Additionally, it has also found important application in the stereoselective functionalization of the anomeric carbon in glycosylation reactions. These efforts culminated in the development of different types of catalysts operating through distinct activation modes that allow the selective synthesis of α- or β-glycosides even on daunting substrates. All these advances starting from its first examples in carbohydrate synthesis to the current developments in glycosylation reactions are reviewed.
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Affiliation(s)
- Florian Gallier
- CY Cergy Paris Université, CNRS, BioCIS, 95000, Cergy-Pontoise, France. .,Université Paris-Saclay, CNRS, BioCIS, 92290, Châtenay-Malabry, France
| | - Leandro Soter de Mariz E Miranda
- CY Cergy Paris Université, CNRS, BioCIS, 95000, Cergy-Pontoise, France. .,Université Paris-Saclay, CNRS, BioCIS, 92290, Châtenay-Malabry, France.,Biocatalysis and Organic Synthesis Group, Universidade Federal do Rio de Janeiro, Av Athos da Silveira Ramos 149, Centro de Tecnologia, Bl A, 21941909 Ilha do Fundão, Rio de Janeiro, Brazil
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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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An eco-friendly N-benzoylglycine/thiourea cooperative catalyzed stereoselective synthesis of β-L-rhamnopyranosides. Carbohydr Res 2019; 487:107887. [PMID: 31830633 DOI: 10.1016/j.carres.2019.107887] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Revised: 11/19/2019] [Accepted: 12/03/2019] [Indexed: 11/22/2022]
Abstract
A new practical utility for β-stereoselective L-rhamnopyranosylations are conducted using rhamnosyl trichloroacetimidate donors in the presence of N-benzoylglycine/thiourea cooperative catalysis. This method represents the first instance where amino acid derivative N-benzoylglycine is used as a catalyst for β-L-rhamnopyranosylations. This method represents the first instance where environmentally benign amino acid derivative, such as N-benzoylglycine which is reported as less toxic and can be used as efficient catalyst for smooth transformation under eco friendly conditions. On the other hand β-stereoselectivity of rhamnosyl trichloroacetimidate donors protected with O-picoloyl groups at remote positions (C-2 and C-3) has been investigated while the glycosylation reactions of 2-O-picoloyl group substituted l-rhamnosyl donor displays predominant β-stereoselectivity. Reaction proceeded smoothly with moderate to high yield under mild reaction conditions at room temperature with 10 mol% catalyst loadings and tolerant of a wide range of glycoside acceptors.
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Ehrhard AA, Jäger S, Malm C, Basaran S, Hunger J. CF3-groups critically enhance the binding of thiourea catalysts to ketones – a NMR and FT-IR study. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.111829] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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