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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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Albuquerque HMT, Santos CMM, Silva AMS. Cholesterol-Based Compounds: Recent Advances in Synthesis and Applications. Molecules 2018; 24:E116. [PMID: 30597999 PMCID: PMC6337470 DOI: 10.3390/molecules24010116] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2018] [Revised: 12/22/2018] [Accepted: 12/24/2018] [Indexed: 01/31/2023] Open
Abstract
This review reports on the latest developments (since 2014) in the chemistry of cholesterol and its applications in different research fields. These applications range from drug delivery or bioimaging applications to cholesterol-based liquid crystals and gelators. A brief overview of the most recent synthetic procedures to obtain new cholesterol derivatives is also provided, as well as the latest anticancer, antimicrobial, and antioxidant new cholesterol-based derivatives. This review discusses not only the synthetic details of the preparation of new cholesterol derivatives or conjugates, but also gives a short summary concerning the specific application of such compounds.
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Affiliation(s)
- Hélio M T Albuquerque
- QOPNA & LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal.
| | - Clementina M M Santos
- QOPNA & LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal.
- Centro de Investigação de Montanha (CIMO) Instituto Politécnico de Bragança, Campus de Santa Apolónia, 5300-253 Bragança, Portugal.
| | - Artur M S Silva
- QOPNA & LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal.
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Zhang W, Luo X, Wang Z, Zhang J. One-pot synthesis of β-2,6-dideoxyglycosides via glycosyl iodide intermediates. J Carbohydr Chem 2016. [DOI: 10.1080/07328303.2016.1239729] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Wan Zhang
- School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, China
| | - Xiaosheng Luo
- School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, China
| | - Zhongfu Wang
- School of Life Sciences, Northwestern University, Xi'an, China
| | - Jianbo Zhang
- School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, China
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Wang H, Cui Y, Zou R, Cheng Z, Yao W, Mao Y, Zhang Y. Synthesis of oligosaccharides using per-O-trimethylsilyl-glycosyl iodides as glycosyl donor. Carbohydr Res 2016; 427:1-5. [DOI: 10.1016/j.carres.2016.03.019] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2015] [Revised: 03/21/2016] [Accepted: 03/22/2016] [Indexed: 11/16/2022]
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