1
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Zhu Y, Wang X, Lu S, Zheng J, Liang Y, Zhang L, Fang P, Xu P, Yu B, Yang Y. Microwave-assisted synthesis of highly sulfated mannuronate glycans as potential inhibitors against SARS-CoV-2. Org Biomol Chem 2024; 22:3986-3994. [PMID: 38695061 DOI: 10.1039/d4ob00466c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/16/2024]
Abstract
Algae-based marine carbohydrate drugs are typically decorated with negative ion groups such as carboxylate and sulfate groups. However, the precise synthesis of highly sulfated alginates is challenging, thus impeding their structure-activity relationship studies. Herein we achieve a microwave-assisted synthesis of a range of highly sulfated mannuronate glycans with up to 17 sulfation sites by overcoming the incomplete sulfation due to the electrostatic repulsion of crowded polyanionic groups. Although the partially sulfated tetrasaccharide had the highest affinity for the receptor binding domain (RBD) of the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) Omicron variant, the fully sulfated octasaccharide showed the most potent interference with the binding of the RBD to angiotensin-converting enzyme 2 (ACE2) and Vero E6 cells, indicating that the sulfated oligosaccharides might inhibit the RBD binding to ACE2 in a length-dependent manner.
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Affiliation(s)
- Yirong Zhu
- Shanghai Frontiers Science Center of Optogenetic Techniques for Cell Metabolism, Shanghai Key Laboratory of New Drug Design, Engineering Research Center of Pharmaceutical Process Chemistry, Ministry of Education, School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China.
| | - Xiaotong Wang
- Shanghai Frontiers Science Center of Optogenetic Techniques for Cell Metabolism, Shanghai Key Laboratory of New Drug Design, Engineering Research Center of Pharmaceutical Process Chemistry, Ministry of Education, School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China.
| | - Siqian Lu
- Shanghai Frontiers Science Center of Optogenetic Techniques for Cell Metabolism, Shanghai Key Laboratory of New Drug Design, Engineering Research Center of Pharmaceutical Process Chemistry, Ministry of Education, School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China.
| | - Jibin Zheng
- Shanghai Frontiers Science Center of Optogenetic Techniques for Cell Metabolism, Shanghai Key Laboratory of New Drug Design, Engineering Research Center of Pharmaceutical Process Chemistry, Ministry of Education, School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China.
| | - Youling Liang
- Shanghai Frontiers Science Center of Optogenetic Techniques for Cell Metabolism, Shanghai Key Laboratory of New Drug Design, Engineering Research Center of Pharmaceutical Process Chemistry, Ministry of Education, School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China.
| | - Liangliang Zhang
- Shanghai Frontiers Science Center of Optogenetic Techniques for Cell Metabolism, Shanghai Key Laboratory of New Drug Design, Engineering Research Center of Pharmaceutical Process Chemistry, Ministry of Education, School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China.
| | - Pengfei Fang
- State Key Laboratory of Chemical Biology, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Peng Xu
- State Key Laboratory of Chemical Biology, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Biao Yu
- State Key Laboratory of Chemical Biology, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - You Yang
- Shanghai Frontiers Science Center of Optogenetic Techniques for Cell Metabolism, Shanghai Key Laboratory of New Drug Design, Engineering Research Center of Pharmaceutical Process Chemistry, Ministry of Education, School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China.
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2
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Sasaki K, Uesaki N. Conformationally restricted donors for stereoselective glycosylation. Adv Carbohydr Chem Biochem 2022; 82:107-155. [PMID: 36470647 DOI: 10.1016/bs.accb.2022.10.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
In nucleophilic reactions using sugars as electrophiles, i.e., glycosyl donors, their conformation affects the generation rate or stability of the glycosyl cation intermediates and determines at which side of the SN2-SN1 borderline and at what rate the reaction occurs. In addition, changes in the conformation create the steric or stereoelectronic effects of the substituents, which also change the reaction rate and stereoselectivity. Bulky silyl protecting groups, uronic acid esters, and transannular structures have been utilized to change the conformation. Consequently, reactions with unique reactivities and stereoselectivities have been developed. In this chapter, a discussion of the reaction mechanisms relating stereoselectivity to conformation is provided.
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Affiliation(s)
- Kaname Sasaki
- Department of Chemistry, Toho University, Funabashi, Japan.
| | - Nanako Uesaki
- Department of Chemistry, Toho University, Funabashi, Japan
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3
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Zhang L, Zhang Y, Hua Q, Xu T, Liu J, Zhu Y, Yang Y. Promoter-Controlled Synthesis and Antigenic Evaluation of Mannuronic Acid Alginate Glycans of Pseudomonas aeruginosa. Org Lett 2022; 24:8381-8386. [DOI: 10.1021/acs.orglett.2c03439] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Liangliang Zhang
- Shanghai Frontiers Science Center of Optogenetic Techniques for Cell Metabolism, Shanghai Key Laboratory of New Drug Design, Engineering Research Center of Pharmaceutical Process Chemistry, Ministry of Education, School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Yiyue Zhang
- Shanghai Frontiers Science Center of Optogenetic Techniques for Cell Metabolism, Shanghai Key Laboratory of New Drug Design, Engineering Research Center of Pharmaceutical Process Chemistry, Ministry of Education, School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Qingting Hua
- Shanghai Frontiers Science Center of Optogenetic Techniques for Cell Metabolism, Shanghai Key Laboratory of New Drug Design, Engineering Research Center of Pharmaceutical Process Chemistry, Ministry of Education, School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Tong Xu
- Shanghai Frontiers Science Center of Optogenetic Techniques for Cell Metabolism, Shanghai Key Laboratory of New Drug Design, Engineering Research Center of Pharmaceutical Process Chemistry, Ministry of Education, School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Junru Liu
- Shanghai Frontiers Science Center of Optogenetic Techniques for Cell Metabolism, Shanghai Key Laboratory of New Drug Design, Engineering Research Center of Pharmaceutical Process Chemistry, Ministry of Education, School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Yirong Zhu
- Shanghai Frontiers Science Center of Optogenetic Techniques for Cell Metabolism, Shanghai Key Laboratory of New Drug Design, Engineering Research Center of Pharmaceutical Process Chemistry, Ministry of Education, School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - You Yang
- Shanghai Frontiers Science Center of Optogenetic Techniques for Cell Metabolism, Shanghai Key Laboratory of New Drug Design, Engineering Research Center of Pharmaceutical Process Chemistry, Ministry of Education, School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
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4
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Lu S, Na K, Wei J, Zhang L, Guo X. Alginate oligosaccharides: The structure-function relationships and the directional preparation for application. Carbohydr Polym 2022; 284:119225. [PMID: 35287920 DOI: 10.1016/j.carbpol.2022.119225] [Citation(s) in RCA: 30] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2021] [Revised: 01/20/2022] [Accepted: 02/02/2022] [Indexed: 01/02/2023]
Abstract
Alginate oligosaccharides (AOS) are degradation products of alginate extracted from brown algae. With low molecular weight, high water solubility, and good biological activity, AOS present anti-inflammatory, antimicrobial, antioxidant, and antitumor properties. They also exert growth-promoting effects in animals and plants. Three types of AOS, mannuronate oligosaccharides (MAOS), guluronate oligosaccharides (GAOS), and heterozygous mannuronate and guluronate oligosaccharides (HAOS), can be produced from alginate by enzymatic hydrolysis. Thus far, most studies on the applications and biological activities of AOS have been based mainly on a hybrid form of HAOS. To improve the directional production of AOS for practical applications, systematic studies on the structures and related biological activities of AOS are needed. This review provides a summary of current understanding of structure-function relationships and advances in the production of AOS. The current challenges and opportunities in the application of AOS is suggested to guide the precise application of AOS in practice.
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Affiliation(s)
- Shuang Lu
- College of Life Science, South-Central University for Nationalities, No. 182, Minyuan Road, Hongshan District, Wuhan City, Hubei Province 430074, China
| | - Kai Na
- College of Life Science, South-Central University for Nationalities, No. 182, Minyuan Road, Hongshan District, Wuhan City, Hubei Province 430074, China
| | - Jiani Wei
- College of Life Science, South-Central University for Nationalities, No. 182, Minyuan Road, Hongshan District, Wuhan City, Hubei Province 430074, China
| | - Li Zhang
- College of Life Science, South-Central University for Nationalities, No. 182, Minyuan Road, Hongshan District, Wuhan City, Hubei Province 430074, China
| | - Xiaohua Guo
- College of Life Science, South-Central University for Nationalities, No. 182, Minyuan Road, Hongshan District, Wuhan City, Hubei Province 430074, China.
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5
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Alex C, Demchenko AV. Recent Advances in Stereocontrolled Mannosylation: Focus on Glycans Comprising Acidic and/or Amino Sugars. CHEM REC 2021; 21:3278-3294. [PMID: 34661961 DOI: 10.1002/tcr.202100201] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Revised: 09/20/2021] [Accepted: 09/21/2021] [Indexed: 12/20/2022]
Abstract
The main focus of this review is to describe accomplishments made in the stereoselective synthesis of β-linked mannosides functionalized with carboxyls or amines/amides. These ManNAc, ManA and ManNAcA residues found in many glycoconjugates, bacterial polysaccharides, and alginates have consistently captured interest of the glycoscience community both due to synthetic challenge and therapeutic potential.
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Affiliation(s)
- Catherine Alex
- Department of Chemistry and Biochemistry, University of Missouri - St. Louis, One University Blvd., St. Louis, MO 63121, USA
| | - Alexei V Demchenko
- Department of Chemistry and Biochemistry, University of Missouri - St. Louis, One University Blvd., St. Louis, MO 63121, USA.,Department of Chemistry, Saint Louis University, 3501 Laclede Ave, St. Louis, MO 63103, USA
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6
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Fittolani G, Tyrikos-Ergas T, Vargová D, Chaube MA, Delbianco M. Progress and challenges in the synthesis of sequence controlled polysaccharides. Beilstein J Org Chem 2021; 17:1981-2025. [PMID: 34386106 PMCID: PMC8353590 DOI: 10.3762/bjoc.17.129] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Accepted: 07/22/2021] [Indexed: 01/15/2023] Open
Abstract
The sequence, length and substitution of a polysaccharide influence its physical and biological properties. Thus, sequence controlled polysaccharides are important targets to establish structure-properties correlations. Polymerization techniques and enzymatic methods have been optimized to obtain samples with well-defined substitution patterns and narrow molecular weight distribution. Chemical synthesis has granted access to polysaccharides with full control over the length. Here, we review the progress towards the synthesis of well-defined polysaccharides. For each class of polysaccharides, we discuss the available synthetic approaches and their current limitations.
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Affiliation(s)
- Giulio Fittolani
- Department of Biomolecular Systems, Max Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, 14476 Potsdam, Germany
- Department of Chemistry and Biochemistry, Freie Universität Berlin, Arnimallee 22, 14195 Berlin, Germany
| | - Theodore Tyrikos-Ergas
- Department of Biomolecular Systems, Max Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, 14476 Potsdam, Germany
- Department of Chemistry and Biochemistry, Freie Universität Berlin, Arnimallee 22, 14195 Berlin, Germany
| | - Denisa Vargová
- Department of Biomolecular Systems, Max Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, 14476 Potsdam, Germany
| | - Manishkumar A Chaube
- Department of Biomolecular Systems, Max Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, 14476 Potsdam, Germany
| | - Martina Delbianco
- Department of Biomolecular Systems, Max Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, 14476 Potsdam, Germany
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7
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Dimitriou E, Miller GJ. Chemical synthesis of C6-tetrazole ᴅ-mannose building blocks and access to a bioisostere of mannuronic acid 1-phosphate. Beilstein J Org Chem 2021; 17:1527-1532. [PMID: 34290835 PMCID: PMC8275867 DOI: 10.3762/bjoc.17.110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2021] [Accepted: 06/24/2021] [Indexed: 11/23/2022] Open
Abstract
Alginate is a biocompatible and industrially relevant polysaccharide that derives many of its important properties from the charged carboxylate groups within its polyuronic acid backbone. The design and inclusion of isosteric replacements for these carboxylates would underpin provision of new oligo-/polysaccharide materials with alternate physicochemical properties. Presented herein is our synthesis of mannuronic acid building blocks, appropriately modified at the carboxylate C6 position with a bioisosteric tetrazole. Thioglycosides containing a protected C6-tetrazole are accessed from a C6-nitrile, through dipolar cycloaddition using NaN3 with n-Bu2SnO. We also demonstrate access to orthogonally C4-protected donors, suitable for iterative oligosaccharide synthesis. The development of these building blocks is showcased to access anomeric 3-aminopropyl- and 1-phosphate free sugars containing this non-native motif.
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Affiliation(s)
- Eleni Dimitriou
- Lennard-Jones Laboratory, School of Chemical and Physical Sciences, Keele University, Keele, Staffordshire, ST5 5BG, U. K
| | - Gavin J Miller
- Lennard-Jones Laboratory, School of Chemical and Physical Sciences, Keele University, Keele, Staffordshire, ST5 5BG, U. K
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8
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Alex C, Visansirikul S, Demchenko AV. A versatile approach to the synthesis of glycans containing mannuronic acid residues. Org Biomol Chem 2021; 19:2731-2743. [PMID: 33687051 DOI: 10.1039/d1ob00188d] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Reported herein is a new method for a highly effective synthesis of β-glycosides from mannuronic acid donors equipped with the 3-O-picoloyl group. The stereocontrol of glycosylations was achieved by means of the H-bond-mediated aglycone delivery (HAD). The method was utilized for the synthesis of a tetrasaccharide linked viaβ-(1 → 3)-mannuronic linkages. We have also investigated 3,6-lactonized glycosyl donors that provided moderate to high β-manno stereoselectivity in glycosylations. A method to achieve complete α-manno stereoselectivity with mannuronic acid donors equipped with 3-O-benzoyl group is also reported.
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Affiliation(s)
- Catherine Alex
- Department of Chemistry and Biochemistry, University of Missouri - St Louis, One University Boulevard, St Louis, MO 63121, USA.
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9
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Li X, Wang D, Zhang P, Yu G, Cai C. Recent Advances in the Chemical Synthesis of Marine Acidic Carbohydrates. CURR ORG CHEM 2021. [DOI: 10.2174/1385272824999201230120805] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The ocean supplies abundant active compounds, including small organic molecules,
proteins, lipids, and carbohydrates, with diverse biological functions. The high-value
transformation of marine carbohydrates primarily refers to their pharmaceutical, food, and
cosmetic applications. However, it is still a big challenge to obtain these marine carbohydrates
in well-defined structures. Synthesis is a powerful approach to access marine oligosaccharides,
polysaccharide derivatives, and glycomimetics. In this review, we focus on the
chemical synthesis of marine acidic carbohydrates with uronic acid building blocks such as
alginate, and glycosaminoglycans. Regioselective sulfation using a chemical approach is also
highlighted in the synthesis of marine oligosaccharides, as well as the multivalent glycodendrimers
and glycopolymers for achieving specific functions. This review summarizes recent
advances in the synthesis of marine acidic carbohydrates, as well as their preliminary structure activity relationship
(SAR) studies, which establishes a foundation for the development of novel marine carbohydrate-based drugs and
functional reagents.
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Affiliation(s)
- Xinru Li
- Key Laboratory of Marine Drugs, Ministry of Education & Shandong Provincial Key Laboratory of Glycoscience and Glycotechnology, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China
| | - Depeng Wang
- Key Laboratory of Marine Drugs, Ministry of Education & Shandong Provincial Key Laboratory of Glycoscience and Glycotechnology, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China
| | - Ping Zhang
- Key Laboratory of Marine Drugs, Ministry of Education & Shandong Provincial Key Laboratory of Glycoscience and Glycotechnology, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China
| | - Guangli Yu
- Key Laboratory of Marine Drugs, Ministry of Education & Shandong Provincial Key Laboratory of Glycoscience and Glycotechnology, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China
| | - Chao Cai
- Key Laboratory of Marine Drugs, Ministry of Education & Shandong Provincial Key Laboratory of Glycoscience and Glycotechnology, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China
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10
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Zeng C, Sun B, Cao X, Zhu H, Oluwadahunsi OM, Liu D, Zhu H, Zhang J, Zhang Q, Zhang G, Gibbons CA, Liu Y, Zhou J, Wang PG. Chemical Synthesis of Homogeneous Human E-Cadherin N-Linked Glycopeptides: Stereoselective Convergent Glycosylation and Chemoselective Solid-Phase Aspartylation. Org Lett 2020; 22:8349-8353. [PMID: 33045166 DOI: 10.1021/acs.orglett.0c02971] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
We report herein an efficient chemical synthesis of homogeneous human E-cadherin N-linked glycopeptides consisting of a heptapeptide sequence adjacent to the Asn-633 N-glycosylation site with representative N-glycan structures, including a conserved trisaccharide, a core-fucosylated tetrasaccharide, and a complex-type biantennary octasaccharide. The key steps are a chemoselective on-resin aspartylation using a pseudoproline-containing peptide and stereoselective glycosylation using glycosyl fluororide as a donor. This synthetic strategy demonstrates potential utility in accessing a wide range of homogeneous N-linked glycopeptides for the examination of their biological function.
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Affiliation(s)
- Chen Zeng
- School of Medicine, Southern University of Science and Technology, Shenzhen 518055, China
| | - Bin Sun
- School of Medicine, Southern University of Science and Technology, Shenzhen 518055, China
| | - Xuefeng Cao
- Department of Chemistry, Georgia State University, Atlanta, Georgia 30303, United States
| | - Hailiang Zhu
- Department of Chemistry, Georgia State University, Atlanta, Georgia 30303, United States
| | | | - Ding Liu
- Department of Chemistry, Georgia State University, Atlanta, Georgia 30303, United States
| | - He Zhu
- Department of Chemistry, Georgia State University, Atlanta, Georgia 30303, United States
| | - Jiabin Zhang
- Department of Chemistry, Georgia State University, Atlanta, Georgia 30303, United States
| | - Qing Zhang
- Department of Chemistry, Georgia State University, Atlanta, Georgia 30303, United States
| | - Gaolan Zhang
- Department of Chemistry, Georgia State University, Atlanta, Georgia 30303, United States
| | | | - Yunpeng Liu
- Department of Chemistry, Georgia State University, Atlanta, Georgia 30303, United States
| | - Jun Zhou
- Department of Chemistry, Georgia State University, Atlanta, Georgia 30303, United States.,R&D Headquarters, WuXi AppTec, Shanghai 200131, China
| | - Peng George Wang
- School of Medicine, Southern University of Science and Technology, Shenzhen 518055, China.,Department of Chemistry, Georgia State University, Atlanta, Georgia 30303, United States
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11
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Zhang C, Wang W, Zhao X, Wang H, Yin H. Preparation of alginate oligosaccharides and their biological activities in plants: A review. Carbohydr Res 2020; 494:108056. [PMID: 32559511 DOI: 10.1016/j.carres.2020.108056] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2020] [Revised: 05/31/2020] [Accepted: 05/31/2020] [Indexed: 12/11/2022]
Abstract
Alginate oligosaccharide (AOS) is the degradation product of alginates extracted from brown algae. As a multifunctional oligomer, it has attracted widespread attention in plant research. Different methods of preparation generate AOS possessing diverse structural properties, and result in differences in AOS activity. In this review, the methods of preparation and characterization of AOS are briefly summarized, followed by a systematic introduction to the activity and mechanisms of AOS in plants. AOS can act as a growth promoter at different growth stages of plants. AOS also enhances resistance to pathogens, drought, salt, heavy metals and other stressors by triggering plant immunity, exerting bioactivity just like a pathogen-associated molecular pattern. In addition, AOS can regulate ABA biosynthesis and metabolite to preserve fruit quality and enhance shelf life. This review provides a comprehensive summary of the biological activity of AOS in plants, which will support research and the application of AOS treatments for plants in the future.
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Affiliation(s)
- Chunguang Zhang
- School of Biological Engineering, Dalian Polytechnic University, Dalian, 116034, China; Dalian Engineering Research Center for Carbohydrate Agricultural Preparations, Liaoning Provincial Key Laboratory of Carbohydrates, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
| | - Wenxia Wang
- Dalian Engineering Research Center for Carbohydrate Agricultural Preparations, Liaoning Provincial Key Laboratory of Carbohydrates, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
| | - Xiaoming Zhao
- Dalian Engineering Research Center for Carbohydrate Agricultural Preparations, Liaoning Provincial Key Laboratory of Carbohydrates, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
| | - Hongying Wang
- School of Biological Engineering, Dalian Polytechnic University, Dalian, 116034, China.
| | - Heng Yin
- Dalian Engineering Research Center for Carbohydrate Agricultural Preparations, Liaoning Provincial Key Laboratory of Carbohydrates, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China.
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12
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Pan D, Zhang L, Hua Q, Yang Y. Highly convergent synthesis of a β-mannuronic acid alginate hexadecasaccharide. Org Biomol Chem 2019; 17:6174-6177. [PMID: 31168536 DOI: 10.1039/c9ob01254k] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Solution-phase synthesis of poly-β-mannuronic acids still remains unexplored. We report the first synthesis of a β-mannuronic acid alginate hexadecasaccharide representing the longest synthetic polymannuronic acid so far. The highly convergent synthetic approach provides a new avenue to access poly-β-mannuronic acids that can enable the biological evaluation of poly-β-mannuronic acids as potential therapeutics and vaccines.
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Affiliation(s)
- Dingyi Pan
- Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China.
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13
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Liu J, Yang S, Li X, Yan Q, Reaney MJT, Jiang Z. Alginate Oligosaccharides: Production, Biological Activities, and Potential Applications. Compr Rev Food Sci Food Saf 2019; 18:1859-1881. [DOI: 10.1111/1541-4337.12494] [Citation(s) in RCA: 104] [Impact Index Per Article: 20.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Revised: 07/09/2019] [Accepted: 07/29/2019] [Indexed: 12/15/2022]
Affiliation(s)
- Jun Liu
- Beijing Advanced Innovation Center for Food Nutrition and Human HealthCollege of Food Science and Nutritional EngineeringChina Agricultural Univ. Beijing 100083 China
- Beijing Advanced Innovation Center for Food Nutrition and Human HealthBeijing Technology and Business Univ. Beijing 100048 China
| | - Shaoqing Yang
- Beijing Advanced Innovation Center for Food Nutrition and Human HealthCollege of Food Science and Nutritional EngineeringChina Agricultural Univ. Beijing 100083 China
| | - Xiuting Li
- Beijing Advanced Innovation Center for Food Nutrition and Human HealthBeijing Technology and Business Univ. Beijing 100048 China
| | - Qiaojuan Yan
- Bioresource Utilization LaboratoryCollege of EngineeringChina Agricultural Univ. Beijing 100083 China
| | - Martin J. T. Reaney
- Dept. of Plant SciencesUniv. of Saskatchewan Saskatoon SK S7N 5A8 Canada
- Guangdong Saskatchewan Oilseed Joint Laboratory (GUSTO)Dept. of Food Science and EngineeringJinan Univ. Guangzhou 510632 China
| | - Zhengqiang Jiang
- Beijing Advanced Innovation Center for Food Nutrition and Human HealthCollege of Food Science and Nutritional EngineeringChina Agricultural Univ. Beijing 100083 China
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14
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van der Vorm S, Hansen T, van Hengst JMA, Overkleeft HS, van der Marel GA, Codée JDC. Acceptor reactivity in glycosylation reactions. Chem Soc Rev 2019; 48:4688-4706. [DOI: 10.1039/c8cs00369f] [Citation(s) in RCA: 79] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
The effect of the reactivity of the glycosyl acceptor on the outcome of glycosylation reactions is reviewed.
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Affiliation(s)
| | - Thomas Hansen
- Leiden Institute of Chemistry
- Leiden University
- 2333 CC Leiden
- The Netherlands
| | | | | | | | - Jeroen D. C. Codée
- Leiden Institute of Chemistry
- Leiden University
- 2333 CC Leiden
- The Netherlands
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15
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Li J, Cai C, Yang C, Li J, Sun T, Yu G. Recent Advances in Pharmaceutical Potential of Brown Algal Polysaccharides and their Derivatives. Curr Pharm Des 2019; 25:1290-1311. [PMID: 31237200 DOI: 10.2174/1381612825666190618143952] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Accepted: 05/31/2019] [Indexed: 02/07/2023]
Abstract
Marine plants, animals and microorganisms display steady growth in the ocean and are abundant carbohydrate resources. Specifically, natural polysaccharides obtained from brown algae have been drawing increasing attention owing to their great potential in pharmaceutical applications. This review describes the structural and biological features of brown algal polysaccharides, including alginates, fucoidans, and laminarins, and it highlights recently developed approaches used to obtain the oligo- and polysaccharides with defined structures. Functional modification of these polysaccharides promotes their advanced applications in biomedical materials for controlled release and targeted drug delivery, etc. Moreover, brown algal polysaccharides and their derivatives possess numerous biological activities with anticancer, anticoagulant, wound healing, and antiviral properties. In addition, we also discuss carbohydrate- based substrates from brown algae, which are currently in clinical and preclinical studies, as well as the marine drugs that are already on the market. The present review summarizes the recent development in carbohydratebased products from brown algae, with promising findings that could rapidly facilitate the future discovery of novel marine drugs.
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Affiliation(s)
- Jun Li
- Key Laboratory of Marine Drugs, Ministry of Education & Shandong Provincial Key Laboratory of Glycoscience and Glycotechnology, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China
| | - Chao Cai
- Key Laboratory of Marine Drugs, Ministry of Education & Shandong Provincial Key Laboratory of Glycoscience and Glycotechnology, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China
- Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266003, China
| | - Chendong Yang
- Key Laboratory of Marine Drugs, Ministry of Education & Shandong Provincial Key Laboratory of Glycoscience and Glycotechnology, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China
| | - Jianghua Li
- Key Laboratory of Marine Drugs, Ministry of Education & Shandong Provincial Key Laboratory of Glycoscience and Glycotechnology, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China
| | - Tiantian Sun
- Key Laboratory of Marine Drugs, Ministry of Education & Shandong Provincial Key Laboratory of Glycoscience and Glycotechnology, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China
| | - Guangli Yu
- Key Laboratory of Marine Drugs, Ministry of Education & Shandong Provincial Key Laboratory of Glycoscience and Glycotechnology, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China
- Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266003, China
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16
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Dimitriou E, Miller GJ. Exploring a glycosylation methodology for the synthesis of hydroxamate-modified alginate building blocks. Org Biomol Chem 2019; 17:9321-9335. [DOI: 10.1039/c9ob02053e] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Mixed sequence, C6-hydroxamate-modified alginate disaccharides are prepared using NIS/TMSOTf glycosylation.
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Affiliation(s)
- Eleni Dimitriou
- Lennard-Jones Laboratory
- School of Chemical and Physical Sciences
- Keele University
- Keele
- UK
| | - Gavin J. Miller
- Lennard-Jones Laboratory
- School of Chemical and Physical Sciences
- Keele University
- Keele
- UK
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17
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Panza M, Pistorio SG, Stine KJ, Demchenko AV. Automated Chemical Oligosaccharide Synthesis: Novel Approach to Traditional Challenges. Chem Rev 2018; 118:8105-8150. [PMID: 29953217 PMCID: PMC6522228 DOI: 10.1021/acs.chemrev.8b00051] [Citation(s) in RCA: 194] [Impact Index Per Article: 32.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Advances in carbohydrate chemistry have certainly made common oligosaccharides much more accessible. However, many current methods still rely heavily upon specialized knowledge of carbohydrate chemistry. The application of automated technologies to chemical and life science applications such as genomics and proteomics represents a vibrant field. These automated technologies also present opportunities for their application to organic synthesis, including that of the synthesis of oligosaccharides. However, application of automated methods to the synthesis of carbohydrates is an underdeveloped area as compared to other classes of biomolecules. The overarching goal of this review article is to present the advances that have been made at the interface of carbohydrate chemistry and automated technology.
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Affiliation(s)
- Matteo Panza
- Department of Chemistry and Biochemistry, University of Missouri–St. Louis, One University Boulevard, St. Louis, Missouri 63121, United States
| | - Salvatore G. Pistorio
- Department of Chemistry and Biochemistry, University of Missouri–St. Louis, One University Boulevard, St. Louis, Missouri 63121, United States
| | - Keith J. Stine
- Department of Chemistry and Biochemistry, University of Missouri–St. Louis, One University Boulevard, St. Louis, Missouri 63121, United States
| | - Alexei V. Demchenko
- Department of Chemistry and Biochemistry, University of Missouri–St. Louis, One University Boulevard, St. Louis, Missouri 63121, United States
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18
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Tohda K, Saito M, Sakai H, Ishikura D, Saito R, Sasaki K. NMR characterization of α- and β-mannopyranurono-2,6-lactones. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.06.014] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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19
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20
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Kinnaert C, Daugaard M, Nami F, Clausen MH. Chemical Synthesis of Oligosaccharides Related to the Cell Walls of Plants and Algae. Chem Rev 2017; 117:11337-11405. [DOI: 10.1021/acs.chemrev.7b00162] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Christine Kinnaert
- Center for Nanomedicine and
Theranostics, Department of Chemistry, Technical University of Denmark, Kemitorvet, Building 207, 2800 Kongens Lyngby, Denmark
| | - Mathilde Daugaard
- Center for Nanomedicine and
Theranostics, Department of Chemistry, Technical University of Denmark, Kemitorvet, Building 207, 2800 Kongens Lyngby, Denmark
| | - Faranak Nami
- Center for Nanomedicine and
Theranostics, Department of Chemistry, Technical University of Denmark, Kemitorvet, Building 207, 2800 Kongens Lyngby, Denmark
| | - Mads H. Clausen
- Center for Nanomedicine and
Theranostics, Department of Chemistry, Technical University of Denmark, Kemitorvet, Building 207, 2800 Kongens Lyngby, Denmark
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21
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Hagen B, van Dijk JHM, Zhang Q, Overkleeft HS, van der Marel GA, Codée JDC. Synthesis of the Staphylococcus aureus Strain M Capsular Polysaccharide Repeating Unit. Org Lett 2017; 19:2514-2517. [PMID: 28485610 PMCID: PMC5442609 DOI: 10.1021/acs.orglett.7b00747] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The synthesis of the Staphylococcus aureus strain M capsular polysaccharide repeating unit is reported. A postglycosylation oxidation strategy was utilized for the construction of the α-galactosaminuronic acid linkages, relying on a stereoselective 2-azido-4,6-O-di-tert-butylsilylidene galactopyranoside donor, for which the selectivity was assessed by model glycosylations. The α-fucosamine linkage was installed stereoselectively, using a reactive 2-azidofucosyl donor. An unexpected glycosidic bond cleavage during the TEMPO/PhI(OAc)2-mediated oxidation of a disaccharide intermediate was circumvented by a TEMPO/PhI(OAc)2-Pinnick oxidation protocol.
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Affiliation(s)
- Bas Hagen
- Leiden Institute of Chemistry, Universiteit Leiden , Einsteinweg 55, 2333CC Leiden, The Netherlands
| | - J Hessel M van Dijk
- Leiden Institute of Chemistry, Universiteit Leiden , Einsteinweg 55, 2333CC Leiden, The Netherlands
| | - Qingju Zhang
- Leiden Institute of Chemistry, Universiteit Leiden , Einsteinweg 55, 2333CC Leiden, The Netherlands
| | - Herman S Overkleeft
- Leiden Institute of Chemistry, Universiteit Leiden , Einsteinweg 55, 2333CC Leiden, The Netherlands
| | - Gijsbert A van der Marel
- Leiden Institute of Chemistry, Universiteit Leiden , Einsteinweg 55, 2333CC Leiden, The Netherlands
| | - Jeroen D C Codée
- Leiden Institute of Chemistry, Universiteit Leiden , Einsteinweg 55, 2333CC Leiden, The Netherlands
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22
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van Rijssel ER, Janssen APA, Males A, Davies GJ, van der Marel GA, Overkleeft HS, Codée JDC. Conformational Behaviour of Azasugars Based on Mannuronic Acid. Chembiochem 2017; 18:1297-1304. [DOI: 10.1002/cbic.201700080] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2017] [Indexed: 11/06/2022]
Affiliation(s)
- Erwin R. van Rijssel
- Leiden Institute of Chemistry; Leiden University; Einsteinweg 55 2333 CC Leiden The Netherlands
| | - Antonius P. A. Janssen
- Leiden Institute of Chemistry; Leiden University; Einsteinweg 55 2333 CC Leiden The Netherlands
| | - Alexandra Males
- York Structural Biology Laboratory; Department of Chemistry; The University of York; York YO10 5DD UK
| | - Gideon J. Davies
- York Structural Biology Laboratory; Department of Chemistry; The University of York; York YO10 5DD UK
| | | | - Herman S. Overkleeft
- Leiden Institute of Chemistry; Leiden University; Einsteinweg 55 2333 CC Leiden The Netherlands
| | - Jeroen D. C. Codée
- Leiden Institute of Chemistry; Leiden University; Einsteinweg 55 2333 CC Leiden The Netherlands
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23
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van der Vorm S, Hansen T, Overkleeft HS, van der Marel GA, Codée JDC. The influence of acceptor nucleophilicity on the glycosylation reaction mechanism. Chem Sci 2017; 8:1867-1875. [PMID: 28553477 PMCID: PMC5424809 DOI: 10.1039/c6sc04638j] [Citation(s) in RCA: 112] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2016] [Accepted: 11/08/2016] [Indexed: 01/20/2023] Open
Abstract
A set of model nucleophiles of gradually changing nucleophilicity is used to probe the glycosylation reaction mechanism. Glycosylations of ethanol-based acceptors, bearing varying amounts of fluorine atoms, report on the dependency of the stereochemistry in condensation reactions on the nucleophilicity of the acceptor. Three different glycosylation systems were scrutinized, that differ in the reaction mechanism, that - putatively - prevails during the coupling reaction. It is revealed that the stereoselectivity in glycosylations of benzylidene protected glucose donors are very susceptible to acceptor nucleophilicity whereas condensations of benzylidene mannose and mannuronic acid donors represent more robust glycosylation systems in terms of diastereoselectivity. The change in stereoselectivity with decreasing acceptor nucleophilicity is related to a change in reaction mechanism shifting from the SN2 side to the SN1 side of the reactivity spectrum. Carbohydrate acceptors are examined and the reactivity-selectivity profile of these nucleophiles mirrored those of the model acceptors studied. The set of model ethanol acceptors thus provides a simple and effective "toolbox" to investigate glycosylation reaction mechanisms and report on the robustness of glycosylation protocols.
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Affiliation(s)
- S van der Vorm
- Leiden Institute of Chemistry , Leiden University , Einsteinweg 55 , 2333 CC Leiden , The Netherlands .
| | - T Hansen
- Leiden Institute of Chemistry , Leiden University , Einsteinweg 55 , 2333 CC Leiden , The Netherlands .
| | - H S Overkleeft
- Leiden Institute of Chemistry , Leiden University , Einsteinweg 55 , 2333 CC Leiden , The Netherlands .
| | - G A van der Marel
- Leiden Institute of Chemistry , Leiden University , Einsteinweg 55 , 2333 CC Leiden , The Netherlands .
| | - J D C Codée
- Leiden Institute of Chemistry , Leiden University , Einsteinweg 55 , 2333 CC Leiden , The Netherlands .
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24
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Zhou J, Lv S, Zhang D, Xia F, Hu W. Deactivating Influence of 3-O-Glycosyl Substituent on Anomeric Reactivity of Thiomannoside Observed in Oligomannoside Synthesis. J Org Chem 2017; 82:2599-2621. [DOI: 10.1021/acs.joc.6b03017] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Jun Zhou
- Shanghai Engineering Research
Center of Molecular Therapeutics and New Drug Development, School
of Chemistry and Molecular Engineering, East China Normal University, 3663 North Zhongshan Road, Shanghai 200062, China
| | - Siying Lv
- Shanghai Engineering Research
Center of Molecular Therapeutics and New Drug Development, School
of Chemistry and Molecular Engineering, East China Normal University, 3663 North Zhongshan Road, Shanghai 200062, China
| | - Dan Zhang
- Shanghai Engineering Research
Center of Molecular Therapeutics and New Drug Development, School
of Chemistry and Molecular Engineering, East China Normal University, 3663 North Zhongshan Road, Shanghai 200062, China
| | - Fei Xia
- Shanghai Engineering Research
Center of Molecular Therapeutics and New Drug Development, School
of Chemistry and Molecular Engineering, East China Normal University, 3663 North Zhongshan Road, Shanghai 200062, China
| | - Wenhao Hu
- Shanghai Engineering Research
Center of Molecular Therapeutics and New Drug Development, School
of Chemistry and Molecular Engineering, East China Normal University, 3663 North Zhongshan Road, Shanghai 200062, China
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25
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Hagen B, Ali S, Overkleeft HS, van der Marel GA, Codée JDC. Mapping the Reactivity and Selectivity of 2-Azidofucosyl Donors for the Assembly of N-Acetylfucosamine-Containing Bacterial Oligosaccharides. J Org Chem 2017; 82:848-868. [PMID: 28051314 PMCID: PMC5332126 DOI: 10.1021/acs.joc.6b02593] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The synthesis of complex oligosaccharides is often hindered by a lack of knowledge on the reactivity and selectivity of their constituent building blocks. We investigated the reactivity and selectivity of 2-azidofucosyl (FucN3) donors, valuable synthons in the synthesis of 2-acetamido-2-deoxyfucose (FucNAc) containing oligosaccharides. Six FucN3 donors, bearing benzyl, benzoyl, or tert-butyldimethylsilyl protecting groups at the C3-O and C4-O positions, were synthesized, and their reactivity was assessed in a series of glycosylations using acceptors of varying nucleophilicity and size. It was found that more reactive nucleophiles and electron-withdrawing benzoyl groups on the donor favor the formation of β-glycosides, while poorly reactive nucleophiles and electron-donating protecting groups on the donor favor α-glycosidic bond formation. Low-temperature NMR activation studies of Bn- and Bz-protected donors revealed the formation of covalent FucN3 triflates and oxosulfonium triflates. From these results, a mechanistic explanation is offered in which more reactive acceptors preferentially react via an SN2-like pathway, while less reactive acceptors react via an SN1-like pathway. The knowledge obtained in this reactivity study was then applied in the construction of α-FucN3 linkages relevant to bacterial saccharides. Finally, a modular synthesis of the Staphylococcus aureus type 5 capsular polysaccharide repeating unit, a trisaccharide consisting of two FucNAc units, is described.
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Affiliation(s)
- Bas Hagen
- Leiden Institute of Chemistry, Universiteit Leiden , Einsteinweg 55, 2333CC Leiden, The Netherlands
| | - Sara Ali
- Leiden Institute of Chemistry, Universiteit Leiden , Einsteinweg 55, 2333CC Leiden, The Netherlands
| | - Herman S Overkleeft
- Leiden Institute of Chemistry, Universiteit Leiden , Einsteinweg 55, 2333CC Leiden, The Netherlands
| | - Gijsbert A van der Marel
- Leiden Institute of Chemistry, Universiteit Leiden , Einsteinweg 55, 2333CC Leiden, The Netherlands
| | - Jeroen D C Codée
- Leiden Institute of Chemistry, Universiteit Leiden , Einsteinweg 55, 2333CC Leiden, The Netherlands
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26
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Hashimoto Y, Tanikawa S, Saito R, Sasaki K. β-Stereoselective Mannosylation Using 2,6-Lactones. J Am Chem Soc 2016; 138:14840-14843. [DOI: 10.1021/jacs.6b08874] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Yusuke Hashimoto
- Department of Chemistry, Toho University, 2-2-1 Miyama, Funabashi 274-8510 Japan
| | - Saki Tanikawa
- Department of Chemistry, Toho University, 2-2-1 Miyama, Funabashi 274-8510 Japan
| | - Ryota Saito
- Department of Chemistry, Toho University, 2-2-1 Miyama, Funabashi 274-8510 Japan
| | - Kaname Sasaki
- Department of Chemistry, Toho University, 2-2-1 Miyama, Funabashi 274-8510 Japan
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27
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Schumann B, Parameswarappa SG, Lisboa MP, Kottari N, Guidetti F, Pereira CL, Seeberger PH. Nucleophil-dirigierte Stereokontrolle über Glykosylierungsreaktionen durch geminal-difluorierte Nucleophile. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201606774] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Benjamin Schumann
- Abteilung Biomolekulare Systeme; Max-Planck-Institut für Kolloid- und Grenzflächenforschung; 14424 Potsdam Deutschland
- Institut für Chemie und Biochemie; Freie Universität Berlin; Arnimallee 22 14195 Berlin Deutschland
| | - Sharavathi G. Parameswarappa
- Abteilung Biomolekulare Systeme; Max-Planck-Institut für Kolloid- und Grenzflächenforschung; 14424 Potsdam Deutschland
| | - Marilda P. Lisboa
- Abteilung Biomolekulare Systeme; Max-Planck-Institut für Kolloid- und Grenzflächenforschung; 14424 Potsdam Deutschland
| | - Naresh Kottari
- Abteilung Biomolekulare Systeme; Max-Planck-Institut für Kolloid- und Grenzflächenforschung; 14424 Potsdam Deutschland
| | - Fabio Guidetti
- Abteilung Biomolekulare Systeme; Max-Planck-Institut für Kolloid- und Grenzflächenforschung; 14424 Potsdam Deutschland
| | - Claney L. Pereira
- Abteilung Biomolekulare Systeme; Max-Planck-Institut für Kolloid- und Grenzflächenforschung; 14424 Potsdam Deutschland
| | - Peter H. Seeberger
- Abteilung Biomolekulare Systeme; Max-Planck-Institut für Kolloid- und Grenzflächenforschung; 14424 Potsdam Deutschland
- Institut für Chemie und Biochemie; Freie Universität Berlin; Arnimallee 22 14195 Berlin Deutschland
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28
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Schumann B, Parameswarappa SG, Lisboa MP, Kottari N, Guidetti F, Pereira CL, Seeberger PH. Nucleophile-Directed Stereocontrol Over Glycosylations Using Geminal-Difluorinated Nucleophiles. Angew Chem Int Ed Engl 2016; 55:14431-14434. [DOI: 10.1002/anie.201606774] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2016] [Revised: 08/31/2016] [Indexed: 01/31/2023]
Affiliation(s)
- Benjamin Schumann
- Department of Biomolecular Systems; Max Planck Institute of Colloids and Interfaces; 14424 Potsdam Germany
- Institute of Chemistry and Biochemistry; Freie Universität Berlin; Arnimallee 22 14195 Berlin Germany
| | | | - Marilda P. Lisboa
- Department of Biomolecular Systems; Max Planck Institute of Colloids and Interfaces; 14424 Potsdam Germany
| | - Naresh Kottari
- Department of Biomolecular Systems; Max Planck Institute of Colloids and Interfaces; 14424 Potsdam Germany
| | - Fabio Guidetti
- Department of Biomolecular Systems; Max Planck Institute of Colloids and Interfaces; 14424 Potsdam Germany
| | - Claney L. Pereira
- Department of Biomolecular Systems; Max Planck Institute of Colloids and Interfaces; 14424 Potsdam Germany
| | - Peter H. Seeberger
- Department of Biomolecular Systems; Max Planck Institute of Colloids and Interfaces; 14424 Potsdam Germany
- Institute of Chemistry and Biochemistry; Freie Universität Berlin; Arnimallee 22 14195 Berlin Germany
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29
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Mazur M, Barycza B, Andriamboavonjy H, Lavoie S, Tamigney Kenfack M, Laroussarie A, Blériot Y, Gauthier C. 4′-Methoxyphenacyl-Assisted Synthesis of β-Kdo Glycosides. J Org Chem 2016; 81:10585-10599. [DOI: 10.1021/acs.joc.6b01431] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Marcelina Mazur
- Institut
de Chimie IC2MP, CNRS-UMR 7285, Équipe Synthèse Organique, Université de Poitiers, 4 rue Michel Brunet, 86073 Poitiers Cedex 9, France
- Department
of Chemistry, Wroclaw University of Environmental and Life Sciences, Norwida
25, 50-375 Wroclaw, Poland
| | - Barbara Barycza
- Institut
de Chimie IC2MP, CNRS-UMR 7285, Équipe Synthèse Organique, Université de Poitiers, 4 rue Michel Brunet, 86073 Poitiers Cedex 9, France
- Department
of Chemistry, Wroclaw University of Environmental and Life Sciences, Norwida
25, 50-375 Wroclaw, Poland
| | - Hanitra Andriamboavonjy
- Institut
de Chimie IC2MP, CNRS-UMR 7285, Équipe Synthèse Organique, Université de Poitiers, 4 rue Michel Brunet, 86073 Poitiers Cedex 9, France
| | - Serge Lavoie
- Laboratoire
LASEVE, Département des Sciences Fondamentales, Université du Québec à Chicoutimi, 555 boul. de l’Université, Chicoutimi (Québec), Canada G7H 2B1
| | - Marielle Tamigney Kenfack
- Institut
de Chimie IC2MP, CNRS-UMR 7285, Équipe Synthèse Organique, Université de Poitiers, 4 rue Michel Brunet, 86073 Poitiers Cedex 9, France
| | - Anaïs Laroussarie
- Institut
de Chimie IC2MP, CNRS-UMR 7285, Équipe Synthèse Organique, Université de Poitiers, 4 rue Michel Brunet, 86073 Poitiers Cedex 9, France
| | - Yves Blériot
- Institut
de Chimie IC2MP, CNRS-UMR 7285, Équipe Synthèse Organique, Université de Poitiers, 4 rue Michel Brunet, 86073 Poitiers Cedex 9, France
| | - Charles Gauthier
- Institut
de Chimie IC2MP, CNRS-UMR 7285, Équipe Synthèse Organique, Université de Poitiers, 4 rue Michel Brunet, 86073 Poitiers Cedex 9, France
- Laboratoire
LASEVE, Département des Sciences Fondamentales, Université du Québec à Chicoutimi, 555 boul. de l’Université, Chicoutimi (Québec), Canada G7H 2B1
- INRS-Institut
Armand-Frappier, Université du Québec, 531 boul. des Prairies, Laval (Québec), Canada H7V 1B7
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30
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Tang SL, Pohl NLB. Automated fluorous-assisted solution-phase synthesis of β-1,2-, 1,3-, and 1,6-mannan oligomers. Carbohydr Res 2016; 430:8-15. [PMID: 27155895 PMCID: PMC4893899 DOI: 10.1016/j.carres.2016.03.025] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2016] [Revised: 03/29/2016] [Accepted: 03/30/2016] [Indexed: 12/30/2022]
Abstract
Automated solution-phase syntheses of β-1,2-, 1,3-, and 1,6-mannan oligomers have been accomplished by applying a β-directing C-5 carboxylate strategy. Fluorous-tag-assisted purification after each reaction cycle allowed the synthesis of short β-mannan oligomers with limited loading of glycosyl donor-as low as 3.0 equivalents for each glycosylation cycle. This study showed the capability of the automated solution-phase synthesis protocol for synthesizing various challenging glycosides, including use of a C-5 ester as a protecting group that could be converted under reductive conditions to a hydroxymethyl group for chain extension.
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Affiliation(s)
- Shu-Lun Tang
- Department of Chemistry, Iowa State University, Ames, IA 50011, USA
| | - Nicola L B Pohl
- Department of Chemistry, Iowa State University, Ames, IA 50011, USA; Department of Chemistry, Indiana University, Bloomington, IN 47405, USA.
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31
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Elferink H, Mensink RA, White PB, Boltje TJ. Stereoselective β-Mannosylation by Neighboring-Group Participation. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201604358] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Hidde Elferink
- Institute for Molecules and Materials; Heyendaalseweg 135 6525 AJ Nijmegen The Netherlands
| | - Rens A. Mensink
- Institute for Molecules and Materials; Heyendaalseweg 135 6525 AJ Nijmegen The Netherlands
| | - Paul B. White
- Institute for Molecules and Materials; Heyendaalseweg 135 6525 AJ Nijmegen The Netherlands
| | - Thomas J. Boltje
- Institute for Molecules and Materials; Heyendaalseweg 135 6525 AJ Nijmegen The Netherlands
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32
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Elferink H, Mensink RA, White PB, Boltje TJ. Stereoselective β-Mannosylation by Neighboring-Group Participation. Angew Chem Int Ed Engl 2016; 55:11217-20. [DOI: 10.1002/anie.201604358] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2016] [Revised: 06/02/2016] [Indexed: 11/12/2022]
Affiliation(s)
- Hidde Elferink
- Institute for Molecules and Materials; Heyendaalseweg 135 6525 AJ Nijmegen The Netherlands
| | - Rens A. Mensink
- Institute for Molecules and Materials; Heyendaalseweg 135 6525 AJ Nijmegen The Netherlands
| | - Paul B. White
- Institute for Molecules and Materials; Heyendaalseweg 135 6525 AJ Nijmegen The Netherlands
| | - Thomas J. Boltje
- Institute for Molecules and Materials; Heyendaalseweg 135 6525 AJ Nijmegen The Netherlands
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33
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On the Reactivity of Gulose and Guluronic Acid Building Blocks in the Context of Alginate Assembly. European J Org Chem 2016. [DOI: 10.1002/ejoc.201600336] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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34
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Fascione MA, Brabham R, Turnbull WB. Mechanistic Investigations into the Application of Sulfoxides in Carbohydrate Synthesis. Chemistry 2016; 22:3916-28. [PMID: 26744250 PMCID: PMC4794778 DOI: 10.1002/chem.201503504] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2015] [Indexed: 12/04/2022]
Abstract
The utility of sulfoxides in a diverse range of transformations in the field of carbohydrate chemistry has seen rapid growth since the first introduction of a sulfoxide as a glycosyl donor in 1989. Sulfoxides have since developed into more than just anomeric leaving groups, and today have multiple roles in glycosylation reactions. These include as activators for thioglycosides, hemiacetals, and glycals, and as precursors to glycosyl triflates, which are essential for stereoselective β-mannoside synthesis, and bicyclic sulfonium ions that facilitate the stereoselective synthesis of α-glycosides. In this review we highlight the mechanistic investigations undertaken in this area, often outlining strategies employed to differentiate between multiple proposed reaction pathways, and how the conclusions of these investigations have and continue to inform upon the development of more efficient transformations in sulfoxide-based carbohydrate synthesis.
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Affiliation(s)
- Martin A Fascione
- York Structural Biology Lab, Department of Chemistry, University of York, Heslington Road, York, YO10 5DD, UK.
| | - Robin Brabham
- York Structural Biology Lab, Department of Chemistry, University of York, Heslington Road, York, YO10 5DD, UK
| | - W Bruce Turnbull
- School of Chemistry and Astbury Centre for Structural Molecular Biology, University of Leeds, Woodhouse Lane, Leeds, LS2 9JT, UK.
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35
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Grélaud S, Desvergnes V, Landais Y. Stereocontrolled (Me3Si)3SiH-Mediated Radical and Ionic Hydride Transfer in Synthesis of 2,3,5-Trisubstituted THF. Org Lett 2016; 18:1542-5. [PMID: 26974171 DOI: 10.1021/acs.orglett.6b00303] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
2,3,5-Trisubstituted tetrahydrofurans were prepared stereoselectively through a two-step process involving the addition of an acyl radical to a β-silyloxy acrylic ester followed by an acid-catalyzed desilylation-ketalization sequence and a final oxocarbenium reduction step. High levels of 1,2- and 1,3-stereocontrol were attained when (Me3Si)3SiH was used as a radical followed by a ionic hydrogen transfer agent.
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Affiliation(s)
- Simon Grélaud
- University of Bordeaux , Institute of Molecular Sciences, UMR-CNRS 5255, 351 cours de la libération, 33405 Talence, France
| | - Valérie Desvergnes
- University of Bordeaux , Institute of Molecular Sciences, UMR-CNRS 5255, 351 cours de la libération, 33405 Talence, France
| | - Yannick Landais
- University of Bordeaux , Institute of Molecular Sciences, UMR-CNRS 5255, 351 cours de la libération, 33405 Talence, France
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36
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Satoh H, Hansen HS, Manabe S, van Gunsteren WF, Hünenberger PH. Theoretical Investigation of Solvent Effects on Glycosylation Reactions: Stereoselectivity Controlled by Preferential Conformations of the Intermediate Oxacarbenium-Counterion Complex. J Chem Theory Comput 2015; 6:1783-97. [PMID: 26615839 DOI: 10.1021/ct1001347] [Citation(s) in RCA: 119] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The mechanism of solvent effects on the stereoselectivity of glycosylation reactions is investigated using quantum-mechanical (QM) calculations and molecular dynamics (MD) simulations, considering a methyl-protected glucopyranoside triflate as a glycosyl donor equivalent and the solvents acetonitrile, ether, dioxane, or toluene, as well as gas-phase conditions (vacuum). The QM calculations on oxacarbenium-solvent complexes do not provide support to the usual solvent-coordination hypothesis, suggesting that an experimentally observed β-selectivity (α-selectivity) is caused by the preferential coordination of a solvent molecule to the reactive cation on the α-side (β-side) of the anomeric carbon. Instead, explicit-solvent MD simulations of the oxacarbenium-counterion (triflate ion) complex (along with corresponding QM calculations) are compatible with an alternative mechanism, termed here the conformer and counterion distribution hypothesis. This new hypothesis suggests that the stereoselectivity is dictated by two interrelated conformational properties of the reactive complex, namely, (1) the conformational preferences of the oxacarbenium pyranose ring, modulating the steric crowding and exposure of the anomeric carbon toward the α or β face, and (2) the preferential coordination of the counterion to the oxacarbenium cation on one side of the anomeric carbon, hindering a nucleophilic attack from this side. For example, in acetonitrile, the calculations suggest a dominant B2,5 ring conformation of the cation with preferential coordination of the counterion on the α side, both factors leading to the experimentally observed β selectivity. Conversely, in dioxane, they suggest a dominant (4)H3 ring conformation with preferential counterion coordination on the β side, both factors leading to the experimentally observed α selectivity.
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Affiliation(s)
- Hiroko Satoh
- Laboratory of Physical Chemistry, Swiss Federal Institute of Technology (ETH), CH-8093 Zürich, Switzerland, National Institute of Informatics, Tokyo 101-8430, Japan, and RIKEN Advanced Science Institute, Saitama 351-0198, Japan
| | - Halvor S Hansen
- Laboratory of Physical Chemistry, Swiss Federal Institute of Technology (ETH), CH-8093 Zürich, Switzerland, National Institute of Informatics, Tokyo 101-8430, Japan, and RIKEN Advanced Science Institute, Saitama 351-0198, Japan
| | - Shino Manabe
- Laboratory of Physical Chemistry, Swiss Federal Institute of Technology (ETH), CH-8093 Zürich, Switzerland, National Institute of Informatics, Tokyo 101-8430, Japan, and RIKEN Advanced Science Institute, Saitama 351-0198, Japan
| | - Wilfred F van Gunsteren
- Laboratory of Physical Chemistry, Swiss Federal Institute of Technology (ETH), CH-8093 Zürich, Switzerland, National Institute of Informatics, Tokyo 101-8430, Japan, and RIKEN Advanced Science Institute, Saitama 351-0198, Japan
| | - Philippe H Hünenberger
- Laboratory of Physical Chemistry, Swiss Federal Institute of Technology (ETH), CH-8093 Zürich, Switzerland, National Institute of Informatics, Tokyo 101-8430, Japan, and RIKEN Advanced Science Institute, Saitama 351-0198, Japan
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37
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Tang SL, Linz LB, Bonning BC, Pohl NLB. Automated Solution-Phase Synthesis of Insect Glycans to Probe the Binding Affinity of Pea Enation Mosaic Virus. J Org Chem 2015; 80:10482-9. [PMID: 26457763 PMCID: PMC4640232 DOI: 10.1021/acs.joc.5b01428] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2015] [Indexed: 11/29/2022]
Abstract
Pea enation mosaic virus (PEMV)--a plant RNA virus transmitted exclusively by aphids--causes disease in multiple food crops. However, the aphid-virus interactions required for disease transmission are poorly understood. For virus transmission, PEMV binds to a heavily glycosylated receptor aminopeptidase N in the pea aphid gut and is transcytosed across the gut epithelium into the aphid body cavity prior to release in saliva as the aphid feeds. To investigate the role of glycans in PEMV-aphid interactions and explore the possibility of viral control through blocking a glycan interaction, we synthesized insect N-glycan terminal trimannosides by automated solution-phase synthesis. The route features a mannose building block with C-5 ester enforcing a β-linkage, which also provides a site for subsequent chain extension. The resulting insect N-glycan terminal trimannosides with fluorous tags were used in a fluorous microarray to analyze binding with fluorescein isothiocyanate-labeled PEMV; however, no specific binding between the insect glycan and PEMV was detected. To confirm these microarray results, we removed the fluorous tag from the trimannosides for isothermal titration calorimetry studies with unlabeled PEMV. The ITC studies confirmed the microarray results and suggested that this particular glycan-PEMV interaction is not involved in virus uptake and transport through the aphid.
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Affiliation(s)
- Shu-Lun Tang
- Department
of Chemistry, Hach Hall, Iowa State University, Ames, Iowa 50011, United States
| | - Lucas B. Linz
- Department
of Entomology, 339 Science
II, Iowa State University, Ames, Iowa 50011, United States
| | - Bryony C. Bonning
- Department
of Entomology, 339 Science
II, Iowa State University, Ames, Iowa 50011, United States
| | - Nicola L. B. Pohl
- Department
of Chemistry, Simon Hall, Indiana University, Bloomington, Indiana 47405, United States
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38
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Volbeda AG, Kistemaker HAV, Overkleeft HS, van der Marel GA, Filippov DV, Codée JDC. Chemoselective Cleavage of p-Methoxybenzyl and 2-Naphthylmethyl Ethers Using a Catalytic Amount of HCl in Hexafluoro-2-propanol. J Org Chem 2015; 80:8796-806. [PMID: 26230920 DOI: 10.1021/acs.joc.5b01030] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A new, fast, mild and chemoselective deprotection method to cleave p-methoxybenzyl and 2-naphthylmethyl ethers using catalytic amounts of hydrochloric acid in a 1:1 mixture of hexafluoro-2-propanol (HFIP) and methylene chloride (DCM) is described. The scope of the methodology becomes apparent from 14 examples of orthogonally protected monosaccharides that are subjected to HCl/HFIP treatment. The applicability of the HCl/HFIP method is illustrated by the synthesis of a sulfated β-mannuronic acid disaccharide.
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Affiliation(s)
- Anne Geert Volbeda
- Leiden Institute of Chemistry, Leiden University , P.O. Box 9502, 2300 RA Leiden, The Netherlands
| | - Hans A V Kistemaker
- Leiden Institute of Chemistry, Leiden University , P.O. Box 9502, 2300 RA Leiden, The Netherlands
| | - Herman S Overkleeft
- Leiden Institute of Chemistry, Leiden University , P.O. Box 9502, 2300 RA Leiden, The Netherlands
| | - Gijsbert A van der Marel
- Leiden Institute of Chemistry, Leiden University , P.O. Box 9502, 2300 RA Leiden, The Netherlands
| | - Dmitri V Filippov
- Leiden Institute of Chemistry, Leiden University , P.O. Box 9502, 2300 RA Leiden, The Netherlands
| | - Jeroen D C Codée
- Leiden Institute of Chemistry, Leiden University , P.O. Box 9502, 2300 RA Leiden, The Netherlands
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39
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Zhang Q, van Rijssel ER, Walvoort MTC, Overkleeft HS, van der Marel GA, Codée JDC. Acceptor Reactivity in the Total Synthesis of Alginate Fragments Containing α-L-Guluronic Acid and β-D-Mannuronic Acid. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201502581] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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40
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Abstract
![]()
The
first automated solution-phase synthesis of β-1,4-mannuronate
and β-1,4-mannan oligomers has been accomplished by using a
β-directing C-5 carboxylate strategy. By utilizing fluorous-tag
assisting purification after repeated reaction cycles, β-1,4-mannuronate
was synthesized up to a hexasaccharide with limited loading of a glycosyl
donor (up to 3.5 equiv) for each glycosylation cycle due to the homogeneous
solution-phase reaction condition. After a global reduction of the
uronates, the β-1,4-mannan hexasaccharide was obtained, thereby
demonstrating a new approach to β-mannan synthesis.
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Affiliation(s)
- Shu-Lun Tang
- †Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States
| | - Nicola L B Pohl
- †Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States.,‡Department of Chemistry, Indiana University, Bloomington, Indiana 47405, United States
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41
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Zhang Q, van Rijssel ER, Walvoort MTC, Overkleeft HS, van der Marel GA, Codée JDC. Acceptor Reactivity in the Total Synthesis of Alginate Fragments Containing α-L-Guluronic Acid and β-D-Mannuronic Acid. Angew Chem Int Ed Engl 2015; 54:7670-3. [DOI: 10.1002/anie.201502581] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2015] [Indexed: 11/06/2022]
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42
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Komarova BS, Orekhova MV, Tsvetkov YE, Nifantiev NE. Is an acyl group at O-3 in glucosyl donors able to control α-stereoselectivity of glycosylation? The role of conformational mobility and the protecting group at O-6. Carbohydr Res 2013; 384:70-86. [PMID: 24368161 DOI: 10.1016/j.carres.2013.11.016] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2013] [Revised: 11/21/2013] [Accepted: 11/23/2013] [Indexed: 11/28/2022]
Abstract
The stereodirecting effect of a 3-O-acetyl protecting group, which is potentially capable of the remote anchimeric participation, and other protecting groups in 2-O-benzyl glucosyl donors with flexible and rigid conformations has been investigated. To this aim, an array of N-phenyltrifluoroacetimidoyl and sulfoxide donors bearing either 3-O-acetyl or 3-O-benzyl groups in combination with 4,6-di-O-benzyl, 6-O-acyl-4-O-benzyl, or 4,6-O-benzylidene protecting groups was prepared. The conformationally flexible 3-O-acetylated glucosyl donor protected at other positions with O-benzyl groups demonstrated very low or no α-stereoselectivity upon glycosylation of primary or secondary acceptors. On the contrary, 3,6-di-O-acylated glucosyl donors proved to be highly α-stereoselective as well as the donor having a single potentially participating acetyl group at O-6. The 3,6-di-O-acylated donor was shown to be the best α-glucosylating block for the primary acceptor, whereas the best α-selectivity of glycosylation of the secondary acceptor was achieved with the 6-O-acylated donor. Glycosylation of the secondary acceptor with the conformationally constrained 3-O-acetyl-4,6-O-benzylidene-protected donor displayed under standard conditions (-35°C) even lower α-selectivity as compared to the 3-O-benzyl analogue. However, increasing the reaction temperature essentially raised the α-stereoselectivities of glycosylation with both 3-O-acetyl and 3-O-benzyl donors and made them almost equal. The stereodirecting effects of protecting groups observed for N-phenyltrifluoroacetimidoyl donors were also generally proven for sulfoxide donors.
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Affiliation(s)
- Bozhena S Komarova
- Laboratory of Glycoconjugate Chemistry, N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospect 47, 119991 Moscow, Russia
| | - Maria V Orekhova
- Laboratory of Glycoconjugate Chemistry, N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospect 47, 119991 Moscow, Russia
| | - Yury E Tsvetkov
- Laboratory of Glycoconjugate Chemistry, N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospect 47, 119991 Moscow, Russia
| | - Nikolay E Nifantiev
- Laboratory of Glycoconjugate Chemistry, N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospect 47, 119991 Moscow, Russia.
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43
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Riley LM, Weadge JT, Baker P, Robinson H, Codée JDC, Tipton PA, Ohman DE, Howell PL. Structural and functional characterization of Pseudomonas aeruginosa AlgX: role of AlgX in alginate acetylation. J Biol Chem 2013; 288:22299-314. [PMID: 23779107 DOI: 10.1074/jbc.m113.484931] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
The exopolysaccharide alginate, produced by mucoid Pseudomonas aeruginosa in the lungs of cystic fibrosis patients, undergoes two different chemical modifications as it is synthesized that alter the properties of the polymer and hence the biofilm. One modification, acetylation, causes the cells in the biofilm to adhere better to lung epithelium, form microcolonies, and resist the effects of the host immune system and/or antibiotics. Alginate biosynthesis requires 12 proteins encoded by the algD operon, including AlgX, and although this protein is essential for polymer production, its exact role is unknown. In this study, we present the X-ray crystal structure of AlgX at 2.15 Å resolution. The structure reveals that AlgX is a two-domain protein, with an N-terminal domain with structural homology to members of the SGNH hydrolase superfamily and a C-terminal carbohydrate-binding module. A number of residues in the carbohydrate-binding module form a substrate recognition "pinch point" that we propose aids in alginate binding and orientation. Although the topology of the N-terminal domain deviates from canonical SGNH hydrolases, the residues that constitute the Ser-His-Asp catalytic triad characteristic of this family are structurally conserved. In vivo studies reveal that site-specific mutation of these residues results in non-acetylated alginate. This catalytic triad is also required for acetylesterase activity in vitro. Our data suggest that not only does AlgX protect the polymer as it passages through the periplasm but that it also plays a role in alginate acetylation. Our results provide the first structural insight for a wide group of closely related bacterial polysaccharide acetyltransferases.
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Affiliation(s)
- Laura M Riley
- Program in Molecular Structure and Function, The Hospital for Sick Children, Toronto, Ontario M5G 1X8, Canada
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44
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Walvoort MTC, van den Elst H, Plante OJ, Kröck L, Seeberger PH, Overkleeft HS, van der Marel GA, Codée JDC. Automated Solid-Phase Synthesis of β-Mannuronic Acid Alginates. Angew Chem Int Ed Engl 2012; 51:4393-6. [DOI: 10.1002/anie.201108744] [Citation(s) in RCA: 83] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2011] [Indexed: 12/13/2022]
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45
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Walvoort MTC, van den Elst H, Plante OJ, Kröck L, Seeberger PH, Overkleeft HS, van der Marel GA, Codée JDC. Automated Solid-Phase Synthesis of β-Mannuronic Acid Alginates. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201108744] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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46
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Codée JDC, Walvoort MTC, de Jong AR, Lodder G, Overkleeft HS, van der Marel GA. Mannuronic Acids: Reactivity and Selectivity. J Carbohydr Chem 2011. [DOI: 10.1080/07328303.2011.624284] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Affiliation(s)
- Jeroen D. C. Codée
- a Leiden Institute of Chemistry , Leiden University , P.O. Box 9502, 2300 RA, Leiden , The Netherlands
| | - Marthe T. C. Walvoort
- a Leiden Institute of Chemistry , Leiden University , P.O. Box 9502, 2300 RA, Leiden , The Netherlands
| | - Ana-Rae de Jong
- a Leiden Institute of Chemistry , Leiden University , P.O. Box 9502, 2300 RA, Leiden , The Netherlands
| | - Gerrit Lodder
- a Leiden Institute of Chemistry , Leiden University , P.O. Box 9502, 2300 RA, Leiden , The Netherlands
| | - Herman S. Overkleeft
- a Leiden Institute of Chemistry , Leiden University , P.O. Box 9502, 2300 RA, Leiden , The Netherlands
| | - Gijsbert A. van der Marel
- a Leiden Institute of Chemistry , Leiden University , P.O. Box 9502, 2300 RA, Leiden , The Netherlands
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47
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Pauwels N, Aspeslagh S, Vanhoenacker G, Sandra K, Yu ED, Zajonc DM, Elewaut D, Linclau B, Van Calenbergh S. Divergent synthetic approach to 6''-modified α-GalCer analogues. Org Biomol Chem 2011; 9:8413-21. [PMID: 22042483 DOI: 10.1039/c1ob06235b] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A synthetic approach is presented for the synthesis of galacturonic acid and D-fucosyl modified KRN7000. The approach allows for late-stage functionalisation of both the sugar 6''-OH and the sphingosine amino groups, which enables convenient synthesis of promising 6''-modified KRN7000 analogues.
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Affiliation(s)
- Nora Pauwels
- Laboratory for Medicinal Chemistry (FFW), Faculty of Pharmaceutical Sciences, UGent, Harelbekestraat 72, B-9000 Gent, Belgium
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48
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A potential glucuronate glycosyl donor with 2-O-acyl-6,3-lactone structure: efficient synthesis of glycosaminoglycan disaccharides. Tetrahedron Lett 2011. [DOI: 10.1016/j.tetlet.2011.08.024] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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49
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Walvoort MTC, Moggré GJ, Lodder G, Overkleeft HS, Codée JDC, van der Marel GA. Stereoselective Synthesis of 2,3-Diamino-2,3-dideoxy-β-d-mannopyranosyl Uronates. J Org Chem 2011; 76:7301-15. [DOI: 10.1021/jo201179p] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Marthe T. C. Walvoort
- Leiden Institute of Chemistry, Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands
| | - Gert-Jan Moggré
- Leiden Institute of Chemistry, Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands
| | - Gerrit Lodder
- Leiden Institute of Chemistry, Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands
| | - Herman S. Overkleeft
- Leiden Institute of Chemistry, Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands
| | - Jeroen D. C. Codée
- Leiden Institute of Chemistry, Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands
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50
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Walvoort MTC, de Witte W, van Dijk J, Dinkelaar J, Lodder G, Overkleeft HS, Codée JDC, van der Marel GA. Mannopyranosyl uronic acid donor reactivity. Org Lett 2011; 13:4360-3. [PMID: 21776974 DOI: 10.1021/ol2016862] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
The reactivity of a variety of mannopyranosyl uronic acid donors was assessed in a set of competition experiments, in which two (S)-tolyl mannosyl donors were made to compete for a limited amount of promoter (NIS/TfOH). These experiments revealed that the reactivity of mannuronic acid donors is significantly higher than expected based on the electron-withdrawing capacity of the C-5 carboxylic acid ester function. A 4-O-acetyl-β-(S)-tolyl mannuronic acid donor was found to have similar reactivity as per-O-benzyl-α-(S)-tolyl mannose.
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Affiliation(s)
- Marthe T C Walvoort
- Leiden Institute of Chemistry, Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands
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