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Ding W, Chen X, Sun Z, Luo J, Wang S, Lu Q, Ma J, Zhao C, Chen FE, Xu C. A Radical Activation Strategy for Versatile and Stereoselective N-Glycosylation. Angew Chem Int Ed Engl 2024; 63:e202409004. [PMID: 38837495 DOI: 10.1002/anie.202409004] [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: 05/13/2024] [Revised: 05/31/2024] [Accepted: 06/04/2024] [Indexed: 06/07/2024]
Abstract
Previous N-glycosylation approaches have predominately involved acidic conditions, facing challenges of low stereoselectivity and limited scope. Herein, we introduce a radical activation strategy that enables versatile and stereoselective N-glycosylation using readily accessible glycosyl sulfinate donors under basic conditions and exhibits exceptional tolerance towards various N-aglycones containing alkyl, aryl, heteroaryl and nucleobase functionalities. Preliminary mechanistic studies indicate a pivotal role of iodide, which orchestrates the formation of a glycosyl radical from the glycosyl sulfinate and subsequent generation of the key intermediate, a configurationally well-defined glycosyl iodide, which is subsequently attacked by an N-aglycone in a stereospecific SN2 manner to give the desired N-glycosides. An alternative route involving the coupling of a glycosyl radical and a nitrogen-centered radical is also proposed, affording the exclusive 1,2-trans product. This novel approach promises to broaden the synthetic landscape of N-glycosides, offering a powerful tool for the construction of complex glycosidic structures under mild conditions.
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Affiliation(s)
- Wenyan Ding
- Institute of Pharmaceutical Science and Technology, College of Chemistry, Fuzhou University, Fuzhou, 350108, China
- Qingyuan Innovation Laboratory, Quanzhou, 362801, China
| | - Xinyu Chen
- Institute of Pharmaceutical Science and Technology, College of Chemistry, Fuzhou University, Fuzhou, 350108, China
| | - Zuyao Sun
- Institute of Pharmaceutical Science and Technology, College of Chemistry, Fuzhou University, Fuzhou, 350108, China
| | - Jiaxin Luo
- Institute of Pharmaceutical Science and Technology, College of Chemistry, Fuzhou University, Fuzhou, 350108, China
| | - Shiping Wang
- National Engineering Research Center of Chemical Fertilizer Catalyst, College of Chemical Engineering, Fuzhou University, Fuzhou, 350108, China
| | - Qingqing Lu
- Institute of Pharmaceutical Science and Technology, College of Chemistry, Fuzhou University, Fuzhou, 350108, China
| | - Jialu Ma
- Institute of Pharmaceutical Science and Technology, College of Chemistry, Fuzhou University, Fuzhou, 350108, China
| | - Chongxin Zhao
- Jiangsu Jiyi New Material CO., LTD, Xuzhou, 221700, China
| | - Fen-Er Chen
- Institute of Pharmaceutical Science and Technology, College of Chemistry, Fuzhou University, Fuzhou, 350108, China
- Engineering Center of Catalysis and Synthesis for Chiral Molecules, Department of Chemistry, Fudan University, Shanghai, 200433, China
- Shanghai Engineering Center of Industrial Asymmetric Catalysis for Chiral Drugs, Fudan University, Shanghai, 200433, China
| | - Chunfa Xu
- Institute of Pharmaceutical Science and Technology, College of Chemistry, Fuzhou University, Fuzhou, 350108, China
- Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, 200032, China
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Zýka J, Prouza V, Habanová N, Pohl R, Parkan K. The synthesis and characterization of electron-poor glycosylamines and derived glycosylamides. Carbohydr Res 2024; 536:109023. [PMID: 38242070 DOI: 10.1016/j.carres.2024.109023] [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: 11/29/2023] [Revised: 12/26/2023] [Accepted: 01/04/2024] [Indexed: 01/21/2024]
Abstract
This paper describes a unified approach toward diglycosylamines using methanolic ammonia. All the glycosylamines prepared have been fully characterized, and their anomeric configuration has been determined. The article presents a novel method for the N-acylation of diglycosylamines and other electron-poor glycosylamines, which employs nitromethane as a solvent in carboxylic anhydride acylation under acidic conditions. The feasibility of this transformation is represented by a wide range of reaction substrates. All glycosylamides are formed solely with β-configuration. These two reactions constitute a simple and effective route to the synthesis of a novel class of compounds with an N-glycosidic linkage.
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Affiliation(s)
- Jakub Zýka
- Department of Chemistry of Natural Compounds, University of Chemistry and Technology, Prague, Technická 5, 166 28, Prague, Czech Republic; Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Flemingovo Nám. 2, 166 10, Prague, Czech Republic
| | - Vít Prouza
- Department of Chemistry of Natural Compounds, University of Chemistry and Technology, Prague, Technická 5, 166 28, Prague, Czech Republic; Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Flemingovo Nám. 2, 166 10, Prague, Czech Republic
| | - Nina Habanová
- Department of Analytical Chemistry, University of Chemistry and Technology, Prague, Technická 5, 166 28, Prague, Czech Republic; Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Flemingovo Nám. 2, 166 10, Prague, Czech Republic
| | - Radek Pohl
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Flemingovo Nám. 2, 166 10, Prague, Czech Republic
| | - Kamil Parkan
- Department of Chemistry of Natural Compounds, University of Chemistry and Technology, Prague, Technická 5, 166 28, Prague, Czech Republic; Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Flemingovo Nám. 2, 166 10, Prague, Czech Republic.
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Synthesis and Biological Studies on Dinuclear Gold(I) Complexes with Di-( N-Heterocyclic Carbene) Ligands Functionalized with Carbohydrates. Molecules 2020; 25:molecules25173850. [PMID: 32847116 PMCID: PMC7503629 DOI: 10.3390/molecules25173850] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Revised: 08/17/2020] [Accepted: 08/19/2020] [Indexed: 12/31/2022] Open
Abstract
The design of novel metal complexes with N-heterocyclic carbene (NHC) ligands that display biological activity is an active research field in organometallic chemistry. One of the possible approaches consists of the use of NHC ligands functionalized with a carbohydrate moiety. Two novel Au(I)–Au(I) dinuclear complexes were synthesized; they present a neutral structure with one bridging diNHC ligand, having one or both heterocyclic rings decorated with a carbohydrate functionality. With the symmetric diNHC ligand, the dicationic dinuclear complex bearing two bridging diNHC ligands was also synthesized. The study was completed by analyzing the antiproliferative properties of these complexes, which were compared to the activity displayed by similar mononuclear Au(I) complexes and by the analogous bimetallic Au(I)–Au(I) complex not functionalized with carbohydrates.
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Synthesis and characterization of stanozolol N-glucuronide metabolites. MONATSHEFTE FUR CHEMIE 2019. [DOI: 10.1007/s00706-019-02424-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Chen D, Liu F, Zong L, Sun X, Zhang X, Zhu C, Tao X, Li A. Integrated adsorptive technique for efficient recovery of m-cresol and m-toluidine from actual acidic and salty wastewater. JOURNAL OF HAZARDOUS MATERIALS 2016; 312:192-199. [PMID: 27037473 DOI: 10.1016/j.jhazmat.2016.03.056] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2015] [Revised: 03/10/2016] [Accepted: 03/21/2016] [Indexed: 06/05/2023]
Abstract
An integrated adsorptive technique combining an m-cresol adsorption unit, an acid retardation unit and an m-toluidine adsorption unit in sequence was designed to recover m-cresol and m-toluidine from highly acidic and salty m-cresol manufacturing wastewater. In the first column packed with hypercrosslinked polymeric resin (NDA-99), most m-cresol was captured through π-π and hydrogen-bonding interactions as well as the salting-out effect, while m-toluidine was not absorbed due to protonation. To separate acid from salt, an acid retardation unit was introduced successively to adsorb sulfuric acid by strong base anion exchange resin (201×7). After the acid retardation unit and mild neutralization reaction, the last column filled with NDA-99 was applied to trap neutral m-toluidine from the salty effluent. Moreover, the eluent of the acid retardation unit was utilized as the regenerant to recover m-toluidine, and the recycled high-acidity and low-salinity solution of m-toluidine was directly used to produce m-cresol as the raw material. Therefore, the proposed method not only efficiently recycled m-cresol and m-toluidine, but also reduced the consumption of alkali dramatically (saving 0.1628t/t wastewater). These findings will inspire design of integrated adsorptive techniques for treating complex organic wastewater with high efficiency and low cost.
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Affiliation(s)
- Da Chen
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210046, PR China
| | - Fuqiang Liu
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210046, PR China; State Environmental Protection Engineering Center for Organic Chemical Industrial Waste Water Disposal Resource Reuse, Nanjing 210046, PR China.
| | - Lidan Zong
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210046, PR China
| | - Xiaowen Sun
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210046, PR China
| | - Xiaopeng Zhang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210046, PR China
| | - Changqing Zhu
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210046, PR China
| | - Xuewen Tao
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210046, PR China
| | - Aimin Li
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210046, PR China; State Environmental Protection Engineering Center for Organic Chemical Industrial Waste Water Disposal Resource Reuse, Nanjing 210046, PR China
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Meyerhoefer TJ, Kershaw S, Caliendo N, Eltayeb S, Hanawa-Romero E, Bykovskaya P, Huang V, Marzabadi CH, De Castro M. A Practical Synthesis of Various 2-Deoxy-N-glycosides by UsingD-Glucal. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500001] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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Shibata T, Ito S, Doe M, Tanaka R, Hashimoto H, Kinoshita I, Yano S, Nishioka T. Dynamic behaviour attributed to chiral carbohydrate substituents of N-heterocyclic carbene ligands in square planar nickel complexes. Dalton Trans 2011; 40:6778-84. [DOI: 10.1039/c0dt01833c] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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