1
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Luo S, Liu Y, Hao T, Ma W, Luo Y, Wang S, Xu Z, Hu C, Wen L, Li T. Chemoenzymatic Total Synthesis of Haemophilus ducreyi Lipooligosaccharide Core Octasaccharides Containing Natural and Unnatural Sialic Acids. Org Lett 2023; 25:2312-2317. [PMID: 36972419 DOI: 10.1021/acs.orglett.3c00657] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/29/2023]
Abstract
The first total synthesis of Haemophilus ducreyi lipooligosaccharide core octasaccharides containing natural and unnatural sialic acids has been achieved by an efficient chemoenzymatic approach. A highly convergent [3 + 3] coupling strategy was developed to chemically assemble a unique hexasaccharide bearing multiple rare higher-carbon sugars d-glycero-d-manno-heptose (d,d-Hep), l-glycero-d-manno-heptose (l,d-Hep), and 3-deoxy-α-d-manno-oct-2-ulosonic acid (Kdo). Key features include sequential one-pot glycosylations for oligosaccharide assembly and the construction of the challenging α-(1 → 5)-linked Hep-Kdo glycosidic bond by gold-catalyzed glycosylation with a glycosyl ortho-alkynylbenzoate donor. Furthermore, the sequential enzyme-catalyzed regio- and stereoselective introduction of a galactose residue using β-1,4-galactosyltransferase and different sialic acids using a one-pot multienzyme sialylation system was efficiently accomplished to provide the target octasaccharides.
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Affiliation(s)
- Shiwei Luo
- School of Chinese Materia Medica, Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210023, China
| | - Yating Liu
- School of Chinese Materia Medica, Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210023, China
| | - Tianhui Hao
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Wenjing Ma
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yawen Luo
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - Shasha Wang
- School of Chinese Materia Medica, Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210023, China
| | - Zhuojia Xu
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - Chaoyu Hu
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - Liuqing Wen
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
- School of Chinese Materia Medica, Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210023, China
| | - Tiehai Li
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
- School of Chinese Materia Medica, Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210023, China
- University of Chinese Academy of Sciences, Beijing 100049, China
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2
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Meng S, Hettiarachchi IL, Bhetuwal BR, Thapa P, Zhu J. Stereoselective Synthesis of β-d-Manno-heptopyranoside via Cs 2CO 3-Mediated Anomeric O-Alkylation: Synthesis of a Tetrasaccharide Repeat Unit of Bacillus thermoaerophilus Surface-Layer Glycoprotein. J Org Chem 2022; 87:6588-6600. [PMID: 35537215 DOI: 10.1021/acs.joc.2c00168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Stereoselective synthesis of d-glycero- and l-glycero-β-d-mannoheptosides has been achieved by cesium carbonate-mediated β-selective anomeric O-alkylation of the corresponding d-mannoheptoses. In addition, this method has been utilized in the total synthesis of a tetrasaccharide repeat unit of Bacillus thermoaerophilus surface-layer glycoprotein.
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Affiliation(s)
- Shuai Meng
- Department of Chemistry and Biochemistry and School of Green Chemistry and Engineering, The University of Toledo, 2801 W. Bancroft Street, Toledo, Ohio 43606, United States
| | - Ishani Lakshika Hettiarachchi
- Department of Chemistry and Biochemistry and School of Green Chemistry and Engineering, The University of Toledo, 2801 W. Bancroft Street, Toledo, Ohio 43606, United States
| | - Bishwa Raj Bhetuwal
- Department of Chemistry and Biochemistry and School of Green Chemistry and Engineering, The University of Toledo, 2801 W. Bancroft Street, Toledo, Ohio 43606, United States
| | - Prakash Thapa
- Department of Chemistry and Biochemistry and School of Green Chemistry and Engineering, The University of Toledo, 2801 W. Bancroft Street, Toledo, Ohio 43606, United States
| | - Jianglong Zhu
- Department of Chemistry and Biochemistry and School of Green Chemistry and Engineering, The University of Toledo, 2801 W. Bancroft Street, Toledo, Ohio 43606, United States
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3
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Wang J, Zhang Y, Zhu Y, Liu J, Chen Y, Cao X, Yang Y. Total Synthesis and Immunological Evaluation of the Tri-d-glycero-d-manno-heptose Antigen of the Lipopolysaccharide as a Vaccine Candidate against Helicobacter pylori. Org Lett 2020; 22:8780-8785. [DOI: 10.1021/acs.orglett.0c03105] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Junchang Wang
- Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Yiyue Zhang
- Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Yirong Zhu
- Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Junru Liu
- Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Yan Chen
- Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Xin Cao
- Zhongshan Hospital Institute of Clinical Science, Fudan University, Shanghai Medical College, 179 Fenglin Road, Shanghai 200032, China
| | - You Yang
- 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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4
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Wang J, Rong J, Lou Q, Zhu Y, Yang Y. Synthesis of l- glycero- and d- glycero-d- manno-Heptose Building Blocks for Stereoselective Assembly of the Lipopolysaccharide Core Trisaccharide of Vibrio parahemolyticus O2. Org Lett 2020; 22:8018-8022. [PMID: 32991182 DOI: 10.1021/acs.orglett.0c02961] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Synthesis of bacterial cell surface l-glycero-d-manno-heptose (l,d-Hep)- and d-glycero-d-manno-heptose (d,d-Hep)-containing higher carbon sugars is a challenging task. Here, we report a convenient and efficient approach for the synthesis of the l,d-Hep and d,d-Hep building blocks. Using l-lyxose and d-ribose as starting materials, this approach features diastereoselective Mukaiyama-type aldol reactions as the key steps. On the basis of the synthetic l,d-Hep and d,d-Hep building blocks, we achieved the first stereoselective synthesis of the unique α-l,d-Hep-(1→3)-α-d,d-Hep-(1→5)-α-Kdo core trisaccharide of the lipopolysaccharide of Vibrio parahemolyticus O2.
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Affiliation(s)
- Junchang Wang
- Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Jingjing Rong
- Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Qixin Lou
- Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Yirong Zhu
- Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - You Yang
- 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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5
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Inuki S, Aiba T, Kawakami S, Akiyama T, Inoue JI, Fujimoto Y. Chemical Synthesis of d-glycero-d-manno-Heptose 1,7-Bisphosphate and Evaluation of Its Ability to Modulate NF-κB Activation. Org Lett 2017; 19:3079-3082. [DOI: 10.1021/acs.orglett.7b01158] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Shinsuke Inuki
- Graduate
School of Science and Technology, Keio University 3-14-1 Hiyoshi,
Kohoku-ku, Yokohama, Kanagawa 223-8522, Japan
| | - Toshihiko Aiba
- Graduate
School of Science and Technology, Keio University 3-14-1 Hiyoshi,
Kohoku-ku, Yokohama, Kanagawa 223-8522, Japan
- Department
of Chemistry, Graduate School of Science, Osaka University, 1-1
Machikaneyama-cho, Toyonaka, Osaka 560-0043, Japan
| | - Shota Kawakami
- Graduate
School of Science and Technology, Keio University 3-14-1 Hiyoshi,
Kohoku-ku, Yokohama, Kanagawa 223-8522, Japan
| | - Taishin Akiyama
- Division
of Cellular and Molecular Biology, Department of Cancer Biology, The
Institute of Medical Science, The University of Tokyo, 4-6-1 Shirokanedai, Minato-ku, Tokyo 108-8639, Japan
| | - Jun-ichiro Inoue
- Division
of Cellular and Molecular Biology, Department of Cancer Biology, The
Institute of Medical Science, The University of Tokyo, 4-6-1 Shirokanedai, Minato-ku, Tokyo 108-8639, Japan
| | - Yukari Fujimoto
- Graduate
School of Science and Technology, Keio University 3-14-1 Hiyoshi,
Kohoku-ku, Yokohama, Kanagawa 223-8522, Japan
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6
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5'-Spiro-cyclopropanated lactose derivatives as suitable intermediates for the chain elongation: synthesis of a new 6-deoxy-6-methyl δ-eptulose. Carbohydr Res 2016; 422:45-52. [PMID: 26854721 DOI: 10.1016/j.carres.2016.01.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2015] [Revised: 12/14/2015] [Accepted: 01/20/2016] [Indexed: 10/22/2022]
Abstract
A δ-dicarbonyl heptose has been prepared through an electrophilic ring opening procedure of a 5'-spirocyclopropanated lactose derivative. The reported synthetic procedure outlines a new route for the transformation of this renewable disaccharide into new and interesting δ-dicarbonyl sugars, synthetic precursors of cyclitols, carba- and azasugars. The experimental results of the cyclopropanation process have been successfully rationalized by in silico studies.
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7
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Mulani SK, Cheng KC, Mong KKT. General Homologation Strategy for Synthesis of l-glycero- and d-glycero-Heptopyranoses. Org Lett 2015; 17:5536-9. [DOI: 10.1021/acs.orglett.5b02620] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Shaheen K. Mulani
- Applied Chemistry Department, National Chiao Tung University, 1001 University Road, Taiwan 300, R.O.C
| | - Kuang-Chun Cheng
- Applied Chemistry Department, National Chiao Tung University, 1001 University Road, Taiwan 300, R.O.C
| | - Kwok-Kong T. Mong
- Applied Chemistry Department, National Chiao Tung University, 1001 University Road, Taiwan 300, R.O.C
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8
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Heuckendorff M, Bols PS, Barry CB, Frihed TG, Pedersen CM, Bols M. β-Mannosylation with 4,6-benzylidene protected mannosyl donors without preactivation. Chem Commun (Camb) 2015. [PMID: 26197760 DOI: 10.1039/c5cc04716a] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Mannosylations with benzylidene protected mannosyl donors were found to be β-selective even when no preactivation was performed. It was also found that the kinetic β-product in some cases anomerizes fast to the thermodynamically favored α-anomer under typical reaction conditions.
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Affiliation(s)
- Mads Heuckendorff
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, 2100 Copenhagen Ø, Denmark.
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9
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Frihed TG, Bols M, Pedersen CM. Mechanisms of Glycosylation Reactions Studied by Low-Temperature Nuclear Magnetic Resonance. Chem Rev 2015; 115:4963-5013. [DOI: 10.1021/cr500434x] [Citation(s) in RCA: 122] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
| | - Mikael Bols
- Department of Chemistry, University of Copenhagen, DK-2100 Copenhagen, Denmark
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10
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Vincent SP, Tikad A. β-Selective One-Pot Fluorophosphorylation ofd,d-Heptosylglycals Mediated by Selectfluor. Isr J Chem 2015. [DOI: 10.1002/ijch.201400148] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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11
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Tamigney Kenfack M, Blériot Y, Gauthier C. Intramolecular Aglycon Delivery Enables the Synthesis of 6-Deoxy-β-d-manno-heptosides as Fragments of Burkholderia pseudomallei and Burkholderia mallei Capsular Polysaccharide. J Org Chem 2014; 79:4615-34. [DOI: 10.1021/jo500640n] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Marielle Tamigney Kenfack
- Université de Poitiers, Institut de Chimie IC2MP, UMR-CNRS 7285, Équipe Synthèse Organique, 4 rue Michel
Brunet, 86073 Poitiers, France
| | - Yves Blériot
- Université de Poitiers, Institut de Chimie IC2MP, UMR-CNRS 7285, Équipe Synthèse Organique, 4 rue Michel
Brunet, 86073 Poitiers, France
| | - Charles Gauthier
- Université de Poitiers, Institut de Chimie IC2MP, UMR-CNRS 7285, Équipe Synthèse Organique, 4 rue Michel
Brunet, 86073 Poitiers, France
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12
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Li T, Wen L, Williams A, Wu B, Li L, Qu J, Meisner J, Xiao Z, Fang J, Wang PG. Chemoenzymatic synthesis of ADP-d-glycero-β-d-manno-heptose and study of the substrate specificity of HldE. Bioorg Med Chem 2013; 22:1139-47. [PMID: 24412338 DOI: 10.1016/j.bmc.2013.12.019] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2013] [Revised: 12/03/2013] [Accepted: 12/12/2013] [Indexed: 11/16/2022]
Abstract
An efficient one-pot three enzymes strategy for chemoenzymatic synthesis of ADP-d-glycero-β-d-manno-heptose (ADP-d, d-heptose) was reported using chemically synthesized d, d-heptose-7-phosphate and the ADP-d, d-heptose biosynthetic enzymes HldE and GmhB. Moreover, the result of investigating substrate specificity of the kinase action of HldE revealed that HldE had highly restricted substrate specificity towards structurally modified heptose-7-phosphate analogs.
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Affiliation(s)
- Tiehai Li
- Department of Chemistry, Center for Therapeutics and Diagnostics, Georgia State University, Atlanta, GA 30303, USA
| | - Liuqing Wen
- Department of Chemistry, Center for Therapeutics and Diagnostics, Georgia State University, Atlanta, GA 30303, USA
| | - Adriel Williams
- Department of Chemistry, Center for Therapeutics and Diagnostics, Georgia State University, Atlanta, GA 30303, USA
| | - Baolin Wu
- Department of Chemistry, Center for Therapeutics and Diagnostics, Georgia State University, Atlanta, GA 30303, USA
| | - Lei Li
- Department of Chemistry, Center for Therapeutics and Diagnostics, Georgia State University, Atlanta, GA 30303, USA
| | - Jingyao Qu
- Department of Chemistry, Center for Therapeutics and Diagnostics, Georgia State University, Atlanta, GA 30303, USA
| | - Jeffrey Meisner
- Department of Chemistry, Center for Therapeutics and Diagnostics, Georgia State University, Atlanta, GA 30303, USA
| | - Zhongying Xiao
- Department of Chemistry, Center for Therapeutics and Diagnostics, Georgia State University, Atlanta, GA 30303, USA
| | - Junqiang Fang
- National Glycoengineering Research Center, Shandong University, Jinan, Shandong 250100, People's Republic of China
| | - Peng George Wang
- Department of Chemistry, Center for Therapeutics and Diagnostics, Georgia State University, Atlanta, GA 30303, USA; National Glycoengineering Research Center, Shandong University, Jinan, Shandong 250100, People's Republic of China.
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13
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Tikad A, Vincent SP. Constrained 3,6-Anhydro-Heptosides: Synthesis by a DAST-Induced Debenzylative Reaction, and Reactivity Profile. European J Org Chem 2013. [DOI: 10.1002/ejoc.201301071] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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14
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Improved methods for the stereoselective synthesis of mannoheptosyl donors and their glycosides: toward the synthesis of the trisaccharide repeating unit of the Campylobacter jejuni RM1221 capsular polysaccharide. Tetrahedron 2013. [DOI: 10.1016/j.tet.2013.04.094] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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15
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Frihed TG, Walvoort MTC, Codée JDC, van der Marel GA, Bols M, Pedersen CM. Influence of O6 in Mannosylations Using Benzylidene Protected Donors: Stereoelectronic or Conformational Effects? J Org Chem 2013; 78:2191-205. [DOI: 10.1021/jo302455d] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Tobias Gylling Frihed
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, 2100
Copenhagen, Denmark
| | - Marthe T. C. Walvoort
- 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
| | - Gijs A. van der Marel
- Leiden
Institute of Chemistry, Leiden University, Einsteinweg 55, 2333 CC Leiden,
The Netherlands
| | - Mikael Bols
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, 2100
Copenhagen, Denmark
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16
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Durka M, Tikad A, Périon R, Bosco M, Andaloussi M, Floquet S, Malacain E, Moreau F, Oxoby M, Gerusz V, Vincent SP. Systematic Synthesis of Inhibitors of the Two First Enzymes of the Bacterial Heptose Biosynthetic Pathway: Towards Antivirulence Molecules Targeting Lipopolysaccharide Biosynthesis. Chemistry 2011; 17:11305-13. [DOI: 10.1002/chem.201100396] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2011] [Revised: 05/26/2011] [Indexed: 11/07/2022]
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17
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Ohara T, Adibekian A, Esposito D, Stallforth P, Seeberger PH. Towards the synthesis of a Yersinia pestis cell wall polysaccharide: enantioselective synthesis of an L-glycero-D-manno-heptose building block. Chem Commun (Camb) 2010; 46:4106-8. [PMID: 20454710 DOI: 10.1039/c000784f] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A short and enantioselective de novo synthesis of an L-glycero-D-manno-heptose building block for the total synthesis of a Yersinia pestis cell wall polysaccharide is described.
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Affiliation(s)
- Takafumi Ohara
- Department of Biomolecular Systems, Max Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, 14776 Potsdam, Germany
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18
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Crich D, Picard S. Highly stereoselective synthesis of alpha-D-mannopyranosyl phosphosugars. J Org Chem 2010; 74:9576-9. [PMID: 19924835 DOI: 10.1021/jo902254w] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Alpha-mannopyranosyl phosphosugars are obtained in 61-90% yields from 4,6-O-benzylidene-protected mannosyl thioglycosides bearing ester functionality in the 3-O-position by coupling reactions with ammonium salts of phosphosugars on activation with 1-benzenesulfinyl piperidine, 2,4,6-tri-tert-butylpyrimidine, and trifluoromethanesulfonic anhydride. Due to the presence of the disarming ester group, only the formation of the alpha-isomer was observed.
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Affiliation(s)
- David Crich
- Centre de Recherche de Gif, Institut de Chimie des Substances Naturelles, CNRS, 1 avenue de la Terrasse, 91198 Gif-sur-Yvette, France.
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19
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Discovery of potent BACE-1 inhibitors containing a new hydroxyethylene (HE) Scaffold: Exploration of P1′ alkoxy residues and an aminoethylene (AE) central core. Bioorg Med Chem 2010; 18:1711-23. [DOI: 10.1016/j.bmc.2009.12.051] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2009] [Revised: 11/23/2009] [Accepted: 12/20/2009] [Indexed: 11/23/2022]
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20
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Nagano T, Pospísil J, Chollet G, Schulthoff S, Hickmann V, Moulin E, Herrmann J, Müller R, Fürstner A. Total synthesis and biological evaluation of the cytotoxic resin glycosides ipomoeassin A-F and analogues. Chemistry 2010; 15:9697-706. [PMID: 19697385 DOI: 10.1002/chem.200901449] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
A multitasking C-silylation strategy using the readily available compound 26 as a surrogate for cinnamic acid represents the key design element of a total synthesis of all known members of the ipomoeassin family of resin glyosides. This protecting group maneuver allows the unsaturated acids decorating the glucose subunit of the targets to be attached at an early phase of the synthesis, prevents their participation in the ruthenium-catalyzed ring-closing metathesis (RCM) used to form the macrocyclic ring, and protects them against reduction during the hydrogenation of the resulting cycloalkene over Wilkinson's catalyst. As the C-silyl group can be concomitantly removed with the O-TBS substituent using tris(dimethylamino)sulfonium difluorotrimethylsilicate (TASF) in acetonitrile, no separate protecting group manipulations were necessary in the final stages, thus contributing to a favorable overall "economy of steps". In addition to the naturally occurring ipomoeassins, a small set of synthetic analogues has also been prepared by "diverted total synthesis". The cytotoxicity of these compounds was assayed with two different cancer cell lines. The recorded data confirm previous findings that the acylation- and oxygenation pattern of these amphiphilic glycoconjugates is highly correlated with their biological activity profile. Ipomoeassin F turned out to be the most promising member of the series, showing IC(50) values in the low nanomolar range.
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Affiliation(s)
- Takashi Nagano
- Max-Planck-Institut für Kohlenforschung, 45470 Mülheim/Ruhr, Germany
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21
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22
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23
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Doddi VR, Kokatla HP, Pal APJ, Basak RK, Vankar YD. Synthesis of Hybrids of D-Glucose and D-Galactose with Pyrrolidine-Based Iminosugars as Glycosidase Inhibitors. European J Org Chem 2008. [DOI: 10.1002/ejoc.200800770] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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24
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Jaipuri F, Collet B, Pohl N. Synthesis and Quantitative Evaluation ofGlycero-D-manno-heptose Binding to Concanavalin A by Fluorous-Tag Assistance. Angew Chem Int Ed Engl 2008. [DOI: 10.1002/ange.200704262] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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25
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Jaipuri F, Collet B, Pohl N. Synthesis and Quantitative Evaluation ofGlycero-D-manno-heptose Binding to Concanavalin A by Fluorous-Tag Assistance. Angew Chem Int Ed Engl 2008; 47:1707-10. [DOI: 10.1002/anie.200704262] [Citation(s) in RCA: 87] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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26
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Nokami T, Shibuya A, Tsuyama H, Suga S, Bowers AA, Crich D, Yoshida JI. Electrochemical generation of glycosyl triflate pools. J Am Chem Soc 2007; 129:10922-8. [PMID: 17696345 PMCID: PMC4658653 DOI: 10.1021/ja072440x] [Citation(s) in RCA: 101] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Glycosyl triflates, which serve as important intermediates in glycosylation reactions, were generated and accumulated by the low-temperature electrochemical oxidation of thioglycosides such as thioglucosides, thiogalactosides, and thiomannosides in the presence of tetrabutylammonium triflate (Bu(4)NOTf) as a supporting electrolyte. Thus-obtained solutions of glycosyl triflates (glycosyl triflate pools) were characterized by low-temperature NMR measurements. The thermal stability of glycosyl triflates and their reactions with glycosyl acceptors were also examined.
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Crich D, Bowers AA. Synthesis of a beta-(1-->3)-D-rhamnotetraose by a one-pot, multiple radical fragmentation. Org Lett 2007; 8:4327-30. [PMID: 16956218 PMCID: PMC2617736 DOI: 10.1021/ol061706m] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A naturally occurring beta-(1-->3)-D-rhamnotetraose has been constructed under conditions of sequential beta-selective mannosylation controlled by the 4,6-O-[1-cyano-2-(2-iodophenyl)-ethylidene] protecting group. The route is concise, proceeding through a late-stage radical deoxygenation that successfully uncovers all four deoxy subunits at once.
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Affiliation(s)
- David Crich
- Department of Chemistry, University of Illinois at Chicago, 845 West Taylor Street, Chicago, Illinois 60607-7061, USA.
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Litjens REJN, van den Bos LJ, Codée JDC, Overkleeft HS, van der Marel GA. The use of cyclic bifunctional protecting groups in oligosaccharide synthesis—an overview. Carbohydr Res 2007; 342:419-29. [PMID: 17007825 DOI: 10.1016/j.carres.2006.09.002] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2006] [Revised: 08/30/2006] [Accepted: 09/01/2006] [Indexed: 11/27/2022]
Abstract
A historical overview is presented on stereo-directing effects of cis- and trans-fused diol protective groups used on both donor and acceptor glycosides. Attention is focused on the use of cyclic carbonates and carbamates, diacetals and acetals and finally the special case of 1,2-O-orthoesters and 1,2-O-cyanoalkylidene functionalised residues.
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Affiliation(s)
- Remy E J N Litjens
- Leiden Institute of Chemistry, Leiden University, PO Box 9502, 2333CC Leiden, The Netherlands
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Crich D, Banerjee A. Stereocontrolled synthesis of the D- and L-glycero-beta-D-manno-heptopyranosides and their 6-deoxy analogues. Synthesis of methyl alpha-l-rhamno-pyranosyl-(1-->3)-D-glycero-beta-D-manno-heptopyranosyl- (1-->3)-6-deoxy-glycero-beta-D-manno-heptopyranosyl-(1-->4)-alpha-L- rhamno-pyranoside, a tetrasaccharide subunit of the lipopolysaccharide from Plesimonas shigelloides. J Am Chem Soc 2006; 128:8078-86. [PMID: 16771524 PMCID: PMC2617734 DOI: 10.1021/ja061594u] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The synthesis of d- and l-glycero-alpha-manno-thioheptopyranosides, protected with 4,6-O-alkylidene-type acetals is described. In glycosylations carried out with preactivation with the 1-benzenesulfinylpiperidine/trifluoromethanesulfonic anhydride couple, both the D- and L-glycero series exhibit excellent beta-selectivity with a range of glycosyl acceptors. In contrast, a 4,7-O-alkylidene acetal was found not to afford beta-selectivity. With a 4,6-O-[1-cyano-2-(2-iodophenyl)ethylidene] acetal protected thioglycoside, excellent beta-selectivity was obtained in glycosylation reactions, and subsequent treatment with tributyltin hydride and azoisobutyronitrile brought about clean fragmentation to the 6-deoxy-glycero-beta-D-manno-heptopyranosides. This chemistry was applied to the stereocontrolled synthesis of methyl alpha-L-rhamno-pyranosyl-(1-->3)-D-glycero-beta-D-manno-heptopyranosyl-(1-->3)-6-deoxy-glycero-beta-D-manno-heptopyranosyl-(1-->4)-alpha-L-rhamno-pyranoside, a component of the lipopolysaccharide from Plesimonas shigelloides.
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Affiliation(s)
- David Crich
- Department of Chemistry, University of Illinois at Chicago, 845 West Taylor Street, Chicago, Illinois 60607-7061, USA.
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Read JA, Ahmed RA, Tanner ME. Efficient chemoenzymatic synthesis of ADP-D-glycero-beta-D-manno-heptose and a mechanistic study of ADP-L-glycero-D-manno-heptose 6-epimerase. Org Lett 2006; 7:2457-60. [PMID: 15932222 DOI: 10.1021/ol050774q] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
[reaction: see text] A chemoenzymatic synthesis of ADP-D-glycero-beta-D-manno-heptose (ADP-D,D-Hep) is described in which D,D-Hep 7-phosphate is converted to ADP-D,D-Hep by two biosynthetic enzymes. This strategy allows access to the 6''-deuterated analogue, which upon incubation with the epimerase showed complete retention of the isotopic label at the 6''-position. This provides evidence for a direct oxidation mechanism in which the hydride initially transferred to the NADP+ cofactor is subsequently returned to the same carbon in a nonstereospecific manner.
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Affiliation(s)
- Jay A Read
- Department of Chemistry, University of British Columbia, Vancouver, BC, Canada
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