1
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Rai D, Kulkarni SS. Total Synthesis of Conjugation-Ready Tetrasaccharide Repeating Units of a Multidrug-Resistant Pathogen Acinetobacter baumannii Strain 34 and O5. Org Lett 2023; 25:8332-8337. [PMID: 37955403 DOI: 10.1021/acs.orglett.3c03417] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2023]
Abstract
Herein, we report the first total synthesis of conjugation-ready tetrasaccharide repeating units of Acinetobacter baumannii strain 34 and O5 comprising a common disaccharide motif [α-l-FucpNAc-(1→4)-α-d-GalpNAcA]. The installation of 1,2-cis linkages employing a disarmed 2-azido-d-galacturonic acid derivative as the donor is addressed here. The synthesis of the tetrasaccharide repeating units of A. baumannii strain 34 and O5 is accomplished via the longest linear sequences of 19 steps in 9.8% and 21 steps in 8.4% overall yields, respectively.
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Affiliation(s)
- Diksha Rai
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Suvarn S Kulkarni
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
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2
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Gao K, Qin Y, Liu S, Wang L, Xing R, Yu H, Chen X, Li P. A review of the preparation, derivatization and functions of glucosamine and N-acetyl-glucosamine from chitin. CARBOHYDRATE POLYMER TECHNOLOGIES AND APPLICATIONS 2023. [DOI: 10.1016/j.carpta.2023.100296] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2023] Open
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3
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Li T, Wang J, Zhu X, Zhou X, Sun S, Wang P, Cao H, Yu G, Li M. Synthesis of Rare 6-Deoxy-d-/l-Heptopyranosyl Fluorides: Assembly of a Hexasaccharide Corresponding to Campylobacter jejuni Strain CG8486 Capsular Polysaccharide. J Am Chem Soc 2021; 143:11171-11179. [PMID: 34260212 DOI: 10.1021/jacs.1c05048] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Campylobacter jejuni is the leading cause of human diarrheal diseases and has been designated as one of highly resistant pathogens by the World Health Organization. The C. jejuni capsular polysaccharides feature broad existence of uncommon 6dHepp residues and have proven to be potential antigens to develop innovative antibacterial glycoconjugation vaccines. To address the lack of synthetic methods for rare 6dHepp architectures of importance, we herein describe a novel and efficient approach for the preparation of uncommon d-/l-6dHepp fluorides that have power as glycosylating agents. The synthesis is achieved by a C1-to-C5 switch strategy relying on radical decarboxylative fluorination of uronic acids arising from readily available allyl d-C-glycosides. To further showcase the application of this protocol, a structurally unique hexasaccharide composed of →3)-β-d-6didoHepp-(1→4)-β-d-GlcpNAc-(1→ units, corresponding to the capsular polysaccharide of C. jejuni strain CG8486 has been assembled for the first time. The assembly is characterized by highly efficient construction of the synthetically challenging β-(1,2-cis)-d-ido-heptopyranoside by inversion of the C2 configuration of β-(1,2-trans)-d-gulo-heptopyranoside, which is conveniently obtained by anchimerically assisted stereoselective glycosylation of the orthogonally protected 6dgulHepp fluoride. Ready accessibility of 6dHepp fluorides and the resulting glycans could serve as a rational starting point for the further development of synthetic vaccines fighting Campylobacter infection.
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Affiliation(s)
- Tiantian Li
- Key Laboratory of Marine Medicine, Chinese Ministry of Education, Shandong Provincial Key Laboratory of Glycoscience and Glycotechnology, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China
| | - Jianjun Wang
- Key Laboratory of Marine Medicine, Chinese Ministry of Education, Shandong Provincial Key Laboratory of Glycoscience and Glycotechnology, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China
| | - Xinhao Zhu
- Key Laboratory of Marine Medicine, Chinese Ministry of Education, Shandong Provincial Key Laboratory of Glycoscience and Glycotechnology, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China
| | - Xin Zhou
- Key Laboratory of Marine Medicine, Chinese Ministry of Education, Shandong Provincial Key Laboratory of Glycoscience and Glycotechnology, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China
| | - Shaozi Sun
- Key Laboratory of Marine Medicine, Chinese Ministry of Education, Shandong Provincial Key Laboratory of Glycoscience and Glycotechnology, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China
| | - Peng Wang
- Key Laboratory of Marine Medicine, Chinese Ministry of Education, Shandong Provincial Key Laboratory of Glycoscience and Glycotechnology, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China
| | - Hongzhi Cao
- Key Laboratory of Marine Medicine, Chinese 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, Pilot National Laboratory for Marine Science and Technology, Qingdao 266237, China
| | - Guangli Yu
- Key Laboratory of Marine Medicine, Chinese 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, Pilot National Laboratory for Marine Science and Technology, Qingdao 266237, China
| | - Ming Li
- Key Laboratory of Marine Medicine, Chinese 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, Pilot National Laboratory for Marine Science and Technology, Qingdao 266237, China
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4
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Shang W, Zhu C, Peng F, Pan Z, Ding Y, Xia C. Nitrogen-Centered Radical-Mediated Cascade Amidoglycosylation of Glycals. Org Lett 2021; 23:1222-1227. [PMID: 33560134 DOI: 10.1021/acs.orglett.0c04178] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A nitrogen-centered radical-mediated strategy for preparing 1,2-trans-2-amino-2-deoxyglycosides in one step was established. The cascade amidoglycosylation was initiated by a benzenesulfonimide radical generated from NFSI under the catalytic reduction of TEMPO. The benzenesulfonimide radical was electrophilically added to the glycals, and then the resulting glycosidic radical was converted to oxocarbenium upon oxidation by TEMPO+, which enabled the following anomeric specific glycosylation.
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Affiliation(s)
- Wenbin Shang
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Research & Development Center for Natural Products, School of Chemical Science and Technology, Yunnan University, Kunming 650091, China
| | - Chunyu Zhu
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Research & Development Center for Natural Products, School of Chemical Science and Technology, Yunnan University, Kunming 650091, China
| | - Fengyuan Peng
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Research & Development Center for Natural Products, School of Chemical Science and Technology, Yunnan University, Kunming 650091, China
| | - Zhiqiang Pan
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Research & Development Center for Natural Products, School of Chemical Science and Technology, Yunnan University, Kunming 650091, China
| | - Yuzhen Ding
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Research & Development Center for Natural Products, School of Chemical Science and Technology, Yunnan University, Kunming 650091, China
| | - Chengfeng Xia
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Research & Development Center for Natural Products, School of Chemical Science and Technology, Yunnan University, Kunming 650091, China
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5
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Chang CW, Lin MH, Wang CC. Statistical Analysis of Glycosylation Reactions. Chemistry 2020; 27:2556-2568. [PMID: 32939892 DOI: 10.1002/chem.202003105] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Revised: 09/15/2020] [Indexed: 12/27/2022]
Abstract
Chemical synthesis is one of the practical approaches to access carbohydrate-based natural products and their derivatives with high quality and in a large quantity. However, stereoselectivity during the glycosylation reaction is the main challenge because the reaction can generate both α- and β-glycosides. The main focus of the present article is the concept of recent mechanistic studies that have applied statistical analysis and quantitation for defining stereoselective changes during the reaction process. Based on experimental evidence, a detailed discussion associated with the mechanism and degree of influence affecting the stereoselective outcome of glycosylation is included.
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Affiliation(s)
- Chun-Wei Chang
- Institute of Chemistry, Academia Sinica, Taipei, 115, Taiwan
| | - Mei-Huei Lin
- Institute of Chemistry, Academia Sinica, Taipei, 115, Taiwan
| | - Cheng-Chung Wang
- Institute of Chemistry, Academia Sinica, Taipei, 115, Taiwan.,Chemical Biology and Molecular Biophysics Program (Taiwan), International Graduate Program (TIGP), Academia Sinica, Taipei, 115, Taiwan
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6
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Orlova AV, Laptinskaya TV, Malysheva NN, Kononov LO. Light Scattering in Non-aqueous Solutions of Low-Molecular-Mass Compounds: Application for Supramer Analysis of Reaction Solutions. J SOLUTION CHEM 2020. [DOI: 10.1007/s10953-020-00977-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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7
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Kumar H, Mandal PK. Synthetic routes toward pentasaccharide repeating unit corresponding to the O-antigen of Escherichia coli O181. Tetrahedron Lett 2019. [DOI: 10.1016/j.tetlet.2019.02.027] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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8
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He QQ, Trim PJ, Snel MF, Hopwood JJ, Ferro V. Synthesis and mass spectrometric analysis of disaccharides from methanolysis of heparan sulfate. Org Biomol Chem 2018; 16:8791-8803. [DOI: 10.1039/c8ob02225a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Heparan sulfate (HS) disaccharides were synthesized to identify HS methanolysis products by LC-MS/MS with applications for mucopolysaccharidosis disorders.
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Affiliation(s)
- Qi Qi He
- School of Chemistry and Molecular Biosciences
- The University of Queensland
- Brisbane
- Australia
| | - Paul J. Trim
- Hopwood Centre for Neurobiology
- South Australian Health and Medical Research Institute
- Adelaide
- Australia
| | - Marten F. Snel
- Hopwood Centre for Neurobiology
- South Australian Health and Medical Research Institute
- Adelaide
- Australia
| | - John J. Hopwood
- Hopwood Centre for Neurobiology
- South Australian Health and Medical Research Institute
- Adelaide
- Australia
| | - Vito Ferro
- School of Chemistry and Molecular Biosciences
- The University of Queensland
- Brisbane
- Australia
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9
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Harvey DJ. Analysis of carbohydrates and glycoconjugates by matrix-assisted laser desorption/ionization mass spectrometry: An update for 2011-2012. MASS SPECTROMETRY REVIEWS 2017; 36:255-422. [PMID: 26270629 DOI: 10.1002/mas.21471] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2014] [Accepted: 01/15/2015] [Indexed: 06/04/2023]
Abstract
This review is the seventh update of the original article published in 1999 on the application of MALDI mass spectrometry to the analysis of carbohydrates and glycoconjugates and brings coverage of the literature to the end of 2012. General aspects such as theory of the MALDI process, matrices, derivatization, MALDI imaging, and fragmentation are covered in the first part of the review and applications to various structural types constitute the remainder. The main groups of compound are oligo- and poly-saccharides, glycoproteins, glycolipids, glycosides, and biopharmaceuticals. Much of this material is presented in tabular form. Also discussed are medical and industrial applications of the technique, studies of enzyme reactions, and applications to chemical synthesis. © 2015 Wiley Periodicals, Inc. Mass Spec Rev 36:255-422, 2017.
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Affiliation(s)
- David J Harvey
- Department of Biochemistry, Oxford Glycobiology Institute, University of Oxford, Oxford, OX1 3QU, UK
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10
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Sankarayanarayanan NV, Strebel TR, Boothello RS, Sheerin K, Raghuraman A, Sallas F, Mosier PD, Watermeyer ND, Oscarson S, Desai UR. A Hexasaccharide Containing Rare 2-O-Sulfate-Glucuronic Acid Residues Selectively Activates Heparin Cofactor II. Angew Chem Int Ed Engl 2017; 56:2312-2317. [PMID: 28124818 PMCID: PMC5347859 DOI: 10.1002/anie.201609541] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2016] [Revised: 01/10/2017] [Indexed: 11/12/2022]
Abstract
Glycosaminoglycan (GAG) sequences that selectively target heparin cofactor II (HCII), a key serpin present in human plasma, remain unknown. Using a computational strategy on a library of 46 656 heparan sulfate hexasaccharides we identified a rare sequence consisting of consecutive glucuronic acid 2-O-sulfate residues as selectively targeting HCII. This and four other unique hexasaccharides were chemically synthesized. The designed sequence was found to activate HCII ca. 250-fold, while leaving aside antithrombin, a closely related serpin, essentially unactivated. This group of rare designed hexasaccharides will help understand HCII function. More importantly, our results show for the first time that rigorous use of computational techniques can lead to discovery of unique GAG sequences that can selectively target GAG-binding protein(s), which may lead to chemical biology or drug discovery tools.
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Affiliation(s)
- Nehru Viji Sankarayanarayanan
- Department of Medicinal Chemistry and Institute of Structural Biology, Drug Discovery and Development, Virginia Commonwealth University, Richmond, VA, USA
| | - Tamara R Strebel
- Centre for Synthesis and Chemical Biology, University College of Dublin, Belfield, Dublin, 4, Ireland
| | - Rio S Boothello
- Department of Medicinal Chemistry and Institute of Structural Biology, Drug Discovery and Development, Virginia Commonwealth University, Richmond, VA, USA
| | - Kevin Sheerin
- Centre for Synthesis and Chemical Biology, University College of Dublin, Belfield, Dublin, 4, Ireland
| | - Arjun Raghuraman
- Department of Medicinal Chemistry and Institute of Structural Biology, Drug Discovery and Development, Virginia Commonwealth University, Richmond, VA, USA
| | - Florence Sallas
- Centre for Synthesis and Chemical Biology, University College of Dublin, Belfield, Dublin, 4, Ireland
| | - Philip D Mosier
- Department of Medicinal Chemistry and Institute of Structural Biology, Drug Discovery and Development, Virginia Commonwealth University, Richmond, VA, USA
| | - Nicholas D Watermeyer
- Centre for Synthesis and Chemical Biology, University College of Dublin, Belfield, Dublin, 4, Ireland
| | - Stefan Oscarson
- Centre for Synthesis and Chemical Biology, University College of Dublin, Belfield, Dublin, 4, Ireland
| | - Umesh R Desai
- Department of Medicinal Chemistry and Institute of Structural Biology, Drug Discovery and Development, Virginia Commonwealth University, Richmond, VA, USA
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11
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A Hexasaccharide Containing Rare 2-O
-Sulfate-Glucuronic Acid Residues Selectively Activates Heparin Cofactor II. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201609541] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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12
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Kononov LO, Fedina KG, Orlova AV, Kondakov NN, Abronina PI, Podvalnyy NM, Chizhov AO. Bimodal concentration-dependent reactivity pattern of a glycosyl donor: Is the solution structure involved? Carbohydr Res 2016; 437:28-35. [PMID: 27883907 DOI: 10.1016/j.carres.2016.11.009] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2016] [Revised: 11/10/2016] [Accepted: 11/10/2016] [Indexed: 11/30/2022]
Abstract
Changes in concentration (0.001-0.1 M) of an arabinofuranosyl donor (1) have been shown to modulate the temperature T at which activation of 1 occurs (from -23 °C to +7 °C), the reaction time (from 1.5 h to 3 days) and the yield of the disaccharide formed (from 14% to 82%). At concentrations exceeding 0.01 M, these parameters, as well as the specific optical rotation of the solution of 1, virtually do not depend on concentration suggesting formation of reacting species (supramers) of glycosyl donor with similar structures, hence reactivities, but considerably different from those formed in more dilute solutions. The found critical concentration (0.01 M) separates two concentration ranges of reaction solutions corresponding to two types of solution structure that are featured by the presence of fundamentally different supramers of glycosyl donor, which have distinct chemical properties. These results allow a fresh look at the problems of reactivity of chemical compounds and selectivity of the reactions in which they participate.
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Affiliation(s)
- Leonid O Kononov
- N. D. Zelinsky Institute of Organic Chemistry of the Russian Academy of Sciences, Leninsky Prosp., 47, 119991, Moscow, Russian Federation.
| | - Ksenia G Fedina
- N. D. Zelinsky Institute of Organic Chemistry of the Russian Academy of Sciences, Leninsky Prosp., 47, 119991, Moscow, Russian Federation
| | - Anna V Orlova
- N. D. Zelinsky Institute of Organic Chemistry of the Russian Academy of Sciences, Leninsky Prosp., 47, 119991, Moscow, Russian Federation
| | - Nikolay N Kondakov
- N. D. Zelinsky Institute of Organic Chemistry of the Russian Academy of Sciences, Leninsky Prosp., 47, 119991, Moscow, Russian Federation
| | - Polina I Abronina
- N. D. Zelinsky Institute of Organic Chemistry of the Russian Academy of Sciences, Leninsky Prosp., 47, 119991, Moscow, Russian Federation
| | - Nikita M Podvalnyy
- N. D. Zelinsky Institute of Organic Chemistry of the Russian Academy of Sciences, Leninsky Prosp., 47, 119991, Moscow, Russian Federation
| | - Alexander O Chizhov
- N. D. Zelinsky Institute of Organic Chemistry of the Russian Academy of Sciences, Leninsky Prosp., 47, 119991, Moscow, Russian Federation
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13
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Khatuntseva EA, Sherman AA, Tsvetkov YE, Nifantiev NE. Phenyl 2-azido-2-deoxy-1-selenogalactosides: a single type of glycosyl donor for the highly stereoselective synthesis of α- and β-2-azido-2-deoxy-d-galactopyranosides. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.01.013] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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14
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Ingle AB, Chao CS, Hung WC, Mong KKT. Chemical Synthesis of the O-Antigen Repeating Unit ofEscherichia coliO86 by anN-Formylmorpholine-Modulated One-Pot Glycosylation Strategy. ASIAN J ORG CHEM 2014. [DOI: 10.1002/ajoc.201402057] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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15
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Whitfield DM. In a glycosylation reaction how does a hydroxylic nucleophile find the activated anomeric carbon? Carbohydr Res 2014; 403:69-89. [PMID: 24962244 DOI: 10.1016/j.carres.2014.05.021] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2014] [Revised: 05/26/2014] [Accepted: 05/27/2014] [Indexed: 12/23/2022]
Abstract
The mechanism by which nucleophilic hydroxyls are attracted to activated glycopyranosyl donors is not known. Besides the intrinsic attraction of oxygen centred negative dipoles towards the developing electron deficiency at the anomeric carbon only a few suggestions have been given in the literature. By studying the effect on Density Functional Theory (DFT) modelled glycosylation reactions on the presence of polar additives as tested with acetonitrile two possible effects have been identified. One was noted in a previous publication (Carbohydr. Res.2012, 356, 180-190) and two further examples discovered here that suggest that a lone pair of a nucleophile approaching a donor with a β-leaving group from the α-face can act as the antiperiplanar lone pair that assists leaving group departure. This interaction starts at just under a nucleophile C-1 separation of 3Å and has an incipient bond angle of O-5-C-1-Nuc(O or N) of very close to 90° which can be at C-1 with the p-type orbital at C-1-O-5 of the incipient oxacarbenium ion, that is, the LUMO of the activated donor. The 2nd interaction is less well studied and is suggested to be a similar bonding interaction which moves β-face nucleophiles to O-Nuc-C-1-leaving groups angles close to 180°.
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Affiliation(s)
- Dennis M Whitfield
- National Research Council, Human Health Therapeutics, 100 Sussex Drive, Ottawa, ON K1A 0R6, Canada.
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16
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Synthesis of the tetrasaccharide outer core fragment of Burkholderia multivorans lipooligosaccharide. Carbohydr Res 2014; 403:182-91. [PMID: 24933233 DOI: 10.1016/j.carres.2014.04.018] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2014] [Revised: 04/22/2014] [Accepted: 04/25/2014] [Indexed: 10/25/2022]
Abstract
The first synthesis of the outer core fragment of Burkholderia multivorans lipooligosaccharide [β-D-Glc-(1→3)-α-D-GalNAc-(1→3)-β-D-GalNAc-(1→3)-L-Rha] as α-allyl tetrasaccharide was accomplished. The glycosylations involving GalNAc units were studied in depth testing them under several conditions. This allowed the building of both the α- and the β-configured glycosidic bonds by employing the same GalNAc glycosyl donor, thus considerably shortening the total number of synthetic steps. The target tetrasaccharide was synthesized with an allyl aglycone to allow its future conjugation with an immunogenic protein en route to the development of a synthetic neoglycoconjugate vaccine against the Burkholderia cepacia pathogens.
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Kusumi S, Tomono S, Okuzawa S, Kaneko E, Ueda T, Sasaki K, Takahashi D, Toshima K. Total Synthesis of Vineomycin B2. J Am Chem Soc 2013; 135:15909-12. [DOI: 10.1021/ja407827n] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Shunichi Kusumi
- Department of
Applied Chemistry, Faculty of
Science and Technology, Keio University, 3-14-1 Hiyoshi,
Kohoku-ku, Yokohama 223-8522, Japan
| | - Satoshi Tomono
- Department of
Applied Chemistry, Faculty of
Science and Technology, Keio University, 3-14-1 Hiyoshi,
Kohoku-ku, Yokohama 223-8522, Japan
| | - Shunsuke Okuzawa
- Department of
Applied Chemistry, Faculty of
Science and Technology, Keio University, 3-14-1 Hiyoshi,
Kohoku-ku, Yokohama 223-8522, Japan
| | - Erika Kaneko
- Department of
Applied Chemistry, Faculty of
Science and Technology, Keio University, 3-14-1 Hiyoshi,
Kohoku-ku, Yokohama 223-8522, Japan
| | - Takashi Ueda
- Department of
Applied Chemistry, Faculty of
Science and Technology, Keio University, 3-14-1 Hiyoshi,
Kohoku-ku, Yokohama 223-8522, Japan
| | - Kaname Sasaki
- Department of
Applied Chemistry, Faculty of
Science and Technology, Keio University, 3-14-1 Hiyoshi,
Kohoku-ku, Yokohama 223-8522, Japan
| | - Daisuke Takahashi
- Department of
Applied Chemistry, Faculty of
Science and Technology, Keio University, 3-14-1 Hiyoshi,
Kohoku-ku, Yokohama 223-8522, Japan
| | - Kazunobu Toshima
- Department of
Applied Chemistry, Faculty of
Science and Technology, Keio University, 3-14-1 Hiyoshi,
Kohoku-ku, Yokohama 223-8522, Japan
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18
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Ghosh B, Lai YH, Shih YY, Pradhan TK, Lin CH, Mong KKT. Total Synthesis of a Glycoglycerolipid fromMeiothermus taiwanensisthrough a One-Pot Glycosylation Reaction and Exploration of its Immunological Properties. Chem Asian J 2013; 8:3191-9. [DOI: 10.1002/asia.201300933] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2013] [Indexed: 11/09/2022]
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