1
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Savchenko IV, Zlotnikov ID, Kudryashova EV. Biomimetic Systems Involving Macrophages and Their Potential for Targeted Drug Delivery. Biomimetics (Basel) 2023; 8:543. [PMID: 37999184 PMCID: PMC10669405 DOI: 10.3390/biomimetics8070543] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Revised: 09/10/2023] [Accepted: 11/10/2023] [Indexed: 11/25/2023] Open
Abstract
The concept of targeted drug delivery can be described in terms of the drug systems' ability to mimic the biological objects' property to localize to target cells or tissues. For example, drug delivery systems based on red blood cells or mimicking some of their useful features, such as long circulation in stealth mode, have been known for decades. On the contrary, therapeutic strategies based on macrophages have gained very limited attention until recently. Here, we review two biomimetic strategies associated with macrophages that can be used to develop new therapeutic modalities: first, the mimicry of certain types of macrophages (i.e., the use of macrophages, including tumor-associated or macrophage-derived particles as a carrier for the targeted delivery of therapeutic agents); second, the mimicry of ligands, naturally absorbed by macrophages (i.e., the use of therapeutic agents specifically targeted at macrophages). We discuss the potential applications of biomimetic systems involving macrophages for new advancements in the treatment of infections, inflammatory diseases, and cancer.
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Affiliation(s)
| | | | - Elena V. Kudryashova
- Faculty of Chemistry, Lomonosov Moscow State University, Leninskie Gory, 1/3, 119991 Moscow, Russia (I.D.Z.)
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2
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Pote AR, Pascual S, Planas A, Peczuh MW. Indolyl Septanoside Synthesis for In Vivo Screening of Bacterial Septanoside Hydrolases. Int J Mol Sci 2021; 22:4497. [PMID: 33925857 PMCID: PMC8123396 DOI: 10.3390/ijms22094497] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 04/22/2021] [Accepted: 04/23/2021] [Indexed: 12/29/2022] Open
Abstract
Building-up and breaking-down of carbohydrates are processes common to all forms of life. Glycoside hydrolases are a broad class of enzymes that play a central role in the cleavage of glycosidic bonds, which is fundamental to carbohydrate degradation. The large majority of substrates are five- and six-membered ring glycosides. Our interest in seven-membered ring septanose sugars has inspired the development of a way to search for septanoside hydrolase activity. Described here is a strategy for the discovery of septanoside hydrolases that uses synthetic indolyl septanosides as chromogenic substrates. Access to these tool compounds was enabled by a route where septanosyl halides act as glycosyl donors for the synthesis of the indolyl septanosides. The screening strategy leverages the known dimerization of 3-hydroxy-indoles to make colored dyes, as occurs when the β-galactosidase substrate X-Gal is hydrolyzed. Because screens in bacterial cells would enable searches in organisms that utilize heptoses or from metagenomics libraries, we also demonstrate that septanosides are capable of entering E. coli cells through the use of a BODIPY-labeled septanoside. The modularity of the indolyl septanoside synthesis should allow the screening of a variety of substrates that mimic natural structures via this general approach.
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Affiliation(s)
- Aditya R. Pote
- Department of Chemistry, University of Connecticut, 55 N. Eagleville Road U3060, Storrs, CT 06269, USA;
| | - Sergi Pascual
- Laboratory of Biochemistry, Institute Químic de Sarrià, University Ramon Llull, 08017 Barcelona, Spain;
| | - Antoni Planas
- Laboratory of Biochemistry, Institute Químic de Sarrià, University Ramon Llull, 08017 Barcelona, Spain;
| | - Mark W. Peczuh
- Department of Chemistry, University of Connecticut, 55 N. Eagleville Road U3060, Storrs, CT 06269, USA;
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3
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The Characterisation and Quantification of Immobilised Concanavalin A on Quartz Surfaces Based on The Competitive Binding to Glucose and Fluorescent Labelled Dextran. APPLIED SCIENCES-BASEL 2019. [DOI: 10.3390/app9020318] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
The competition between various carbohydrates in the binding to Concanavalin A (Con A) can be exploited in gravimetric microsensors that detect changes in mass or viscoelasticity as a function of glucose concentration. Such sensors are based on the immobilisation of Con A as the ligand specific element, and a successful application requires that the binding property of Con A is retained. This paper presents a simplified immobilisation procedure of Con A on a quartz surface, a common material for gravimetric microsensors. Structural assessment with atomic force microscopy confirmed that the surface was covered with a layer of macromolecules. This layer shows the presence of entities of various sizes, presumably monomers, dimers and tetramers among which dimers of the Con A are the most dominant structure. Functional assessment using fluorescent labelled dextran (FITC and Alexa 488) suggests a surface coverage ranging from 1.8 × 1011 to 2.1 × 1012 immobilised fluorescent molecules per cm2. The assay was responsive to glucose over a concentration range from 0–40 mM, but became gradually saturated above 20 mM. Hence, the immobilised Con A is able to bind dextran, which is displaced by glucose in a concentration dependent manner, thus triggering a mass change proportional to the MW of dextran.
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4
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Pote AR, Vannam R, Richard A, Gascón J, Peczuh MW. Formation of and Glycosylation with Per‐
O
‐Acetyl Septanosyl Halides: Rationalizing Complex Reactivity En Route to
p
‐Nitrophenyl Septanosides. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800310] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Aditya R. Pote
- Department of Chemistry University of Connecticut 55 N. Eagleville Road, U3060 06269‐3060 Storrs CT USA
| | - Raghu Vannam
- Department of Chemistry University of Connecticut 55 N. Eagleville Road, U3060 06269‐3060 Storrs CT USA
| | - Alissa Richard
- Department of Chemistry University of Connecticut 55 N. Eagleville Road, U3060 06269‐3060 Storrs CT USA
| | - José Gascón
- Department of Chemistry University of Connecticut 55 N. Eagleville Road, U3060 06269‐3060 Storrs CT USA
| | - Mark W. Peczuh
- Department of Chemistry University of Connecticut 55 N. Eagleville Road, U3060 06269‐3060 Storrs CT USA
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5
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Fullam E, Prokes I, Fütterer K, Besra GS. Structural and functional analysis of the solute-binding protein UspC from Mycobacterium tuberculosis that is specific for amino sugars. Open Biol 2017; 6:rsob.160105. [PMID: 27335320 PMCID: PMC4929945 DOI: 10.1098/rsob.160105] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2016] [Accepted: 05/26/2016] [Indexed: 11/29/2022] Open
Abstract
Mycobacterium tuberculosis (Mtb), the aetiological agent of tuberculosis, has evolved to scavenge nutrients from the confined environment of host macrophages with mycobacterial ATP-binding cassette (ABC) transporters playing a key role in nutrient acquisition. Mtb-UspC (Rv2318) is the solute-binding protein of the essential transporter UspABC, one of four Mtb ABC transporters implicated by homology in sugar acquisition. Herein, we report the structural and functional characterization of Mtb-UspC. The 1.5 Å resolution structure of UspC reveals a two subdomain architecture that forms a highly acidic carbohydrate-substrate binding cleft. This has allowed a distinct preference of Mtb-UspC for amino sugars as determined by thermal shift analysis and solution saturation transfer difference-NMR. Taken together our data support the functional assignment of UspABC as an amino-sugar transporter. Given the limited availability of carbohydrates within the phagosomal environmental niche during Mtb intracellular infection, our studies suggest that UspABC enables Mtb to optimize the use of scarce nutrients during intracellular infection, linking essentiality of this protein to a potential role in recycling components of cell-wall peptidoglycan.
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Affiliation(s)
- Elizabeth Fullam
- School of Life Sciences, University of Warwick, Coventry CV4 7AL, UK School of Biosciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
| | - Ivan Prokes
- Department of Chemistry, University of Warwick, Coventry CV4 7AL, UK
| | - Klaus Fütterer
- School of Biosciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
| | - Gurdyal S Besra
- School of Biosciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
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6
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Sager CP, Fiege B, Zihlmann P, Vannam R, Rabbani S, Jakob RP, Preston RC, Zalewski A, Maier T, Peczuh MW, Ernst B. The price of flexibility - a case study on septanoses as pyranose mimetics. Chem Sci 2017; 9:646-654. [PMID: 29629131 PMCID: PMC5868388 DOI: 10.1039/c7sc04289b] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2017] [Accepted: 11/07/2017] [Indexed: 12/22/2022] Open
Abstract
Seven-membered ring mimetics of mannose were studied as ligands for the mannose-specific bacterial lectin FimH, which plays an essential role in the first step of urinary tract infections (UTI). A competitive binding assay and isothermal titration calorimetry (ITC) experiments indicated an approximately ten-fold lower affinity for the seven-membered ring mannose mimetic 2-O-n-heptyl-1,6-anhydro-d-glycero-d-galactitol (7) compared to n-heptyl α-d-mannopyranoside (2), resulting exclusively from a loss of conformational entropy. Investigations by solution NMR, X-ray crystallography, and molecular modeling revealed that 7 establishes a superimposable H-bond network compared to mannoside 2, but at the price of a high entropic penalty due to the loss of its pronounced conformational flexibility. These results underscore the importance of having access to the complete thermodynamic profile of a molecular interaction to "rescue" ligands from entropic penalties with an otherwise perfect fit to the protein binding site.
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Affiliation(s)
- Christoph P Sager
- University of Basel , Institute of Molecular Pharmacy , Pharmacenter of the University of Basel , Klingelbergstrasse 50 , 4056 , Basel , Switzerland .
| | - Brigitte Fiege
- University of Basel , Institute of Molecular Pharmacy , Pharmacenter of the University of Basel , Klingelbergstrasse 50 , 4056 , Basel , Switzerland .
| | - Pascal Zihlmann
- University of Basel , Institute of Molecular Pharmacy , Pharmacenter of the University of Basel , Klingelbergstrasse 50 , 4056 , Basel , Switzerland .
| | - Raghu Vannam
- Department of Chemistry , University of Connecticut , 55 N. Eagleville Road U3060, Storrs , CT , 06279 USA .
| | - Said Rabbani
- University of Basel , Institute of Molecular Pharmacy , Pharmacenter of the University of Basel , Klingelbergstrasse 50 , 4056 , Basel , Switzerland .
| | - Roman P Jakob
- University of Basel , Biozentrum: Focal Area Structural Biology , Klingelbergstrasse 70 , 4056 Basel , Switzerland
| | - Roland C Preston
- University of Basel , Institute of Molecular Pharmacy , Pharmacenter of the University of Basel , Klingelbergstrasse 50 , 4056 , Basel , Switzerland .
| | - Adam Zalewski
- University of Basel , Institute of Molecular Pharmacy , Pharmacenter of the University of Basel , Klingelbergstrasse 50 , 4056 , Basel , Switzerland .
| | - Timm Maier
- University of Basel , Biozentrum: Focal Area Structural Biology , Klingelbergstrasse 70 , 4056 Basel , Switzerland
| | - Mark W Peczuh
- Department of Chemistry , University of Connecticut , 55 N. Eagleville Road U3060, Storrs , CT , 06279 USA .
| | - Beat Ernst
- University of Basel , Institute of Molecular Pharmacy , Pharmacenter of the University of Basel , Klingelbergstrasse 50 , 4056 , Basel , Switzerland .
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7
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Vannam R, Peczuh MW. A practical and scalable synthesis of carbohydrate based oxepines. Org Biomol Chem 2016; 14:3989-96. [PMID: 27056249 DOI: 10.1039/c6ob00262e] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient, seven-step synthesis of carbohydrate based oxepines is reported using per-O-acetyl septanoses as key intermediates. The scope of the synthesis was evaluated by varying both the pyranose starting materials and protecting groups incorporated into the oxepine products. The practicality of the method make it amenable to scale up as demonstrated by the gram-scale synthesis of the d-glucose derived oxepine.
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Affiliation(s)
- Raghu Vannam
- Department of Chemistry, University of Connecticut, 55 North Eagleville Road, U-3060, Storrs, CT 06269, USA.
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8
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Vannam R, Peczuh MW. How to Homologate Your Sugar: Synthetic Approaches to Septanosyl Containing Carbohydrates. European J Org Chem 2016. [DOI: 10.1002/ejoc.201600052] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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9
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Liu B, Novikova N, Simpson MC, Timmer MSM, Stocker BL, Söhnel T, Ware DC, Brothers PJ. Lighting up sugars: fluorescent BODIPY–gluco-furanose and –septanose conjugates linked by direct B–O–C bonds. Org Biomol Chem 2016; 14:5205-9. [DOI: 10.1039/c6ob00726k] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
O-BODIPY–glucose conjugates are linked through covalent B–O–C(glucose) bonds, and feature a rare instance of the unnatural septanose form of glucose.
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Affiliation(s)
- Bowen Liu
- School of Chemical Sciences
- University of Auckland
- Auckland 1142
- New Zealand
| | - Nina Novikova
- School of Chemical Sciences
- University of Auckland
- Auckland 1142
- New Zealand
- School of Chemical and Physical Sciences
| | - M. Cather Simpson
- School of Chemical Sciences
- University of Auckland
- Auckland 1142
- New Zealand
- School of Chemical and Physical Sciences
| | - Mattie S. M. Timmer
- The MacDiarmid Institute for Advanced Materials and Nanotechnology
- New Zealand
| | - Bridget L. Stocker
- The MacDiarmid Institute for Advanced Materials and Nanotechnology
- New Zealand
| | - Tilo Söhnel
- School of Chemical Sciences
- University of Auckland
- Auckland 1142
- New Zealand
| | - David C. Ware
- School of Chemical Sciences
- University of Auckland
- Auckland 1142
- New Zealand
| | - Penelope J. Brothers
- School of Chemical Sciences
- University of Auckland
- Auckland 1142
- New Zealand
- School of Chemical and Physical Sciences
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10
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Loka RS, McConnell MS, Nguyen HM. Studies of Highly-Ordered Heterodiantennary Mannose/Glucose-Functionalized Polymers and Concanavalin A Protein Interactions Using Isothermal Titration Calorimetry. Biomacromolecules 2015; 16:4013-4021. [PMID: 26580410 DOI: 10.1021/acs.biomac.5b01380] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Preparations of the highly ordered monoantennary, homofunctional diantennary, and heterofunctional diantennary neoglycopolymers of α-d-mannose and β-d-glucose residues were achieved via ring-opening metathesis polymerization. Isothermal titration calorimetry measurements of these synthetic neoglycopolymers with Concanavalin A (Con A), revealed that heterofunctional diantennary architectures bearing both α-mannose and nonbinding β-glucose units, poly(Man-Glc), binds to Con A (Ka = 16.1 × 10(6) M(-1)) comparably to homofunctional diantennary neoglycopolymer (Ka = 30 × 10(6) M(-1)) bearing only α-mannose unit, poly(Man-Man). In addition, poly(Man-Glc) neoglycopolymer shows a nearly 5-fold increasing in binding affinity compared to monoantennary neoglycopolymer, poly(Man). Although the exact mechanism for the high binding affinity of poly(Man-Glc) to Con A is unclear, we hypothesize that the α-mannose bound to Con A might facilitate interaction of β-glucose with the extended binding site of Con A due to the close proximity of β-glucose to α-mannose residues in the designed polymerizable scaffold.
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Affiliation(s)
- Ravi S Loka
- Department of Chemistry, University of Iowa, Iowa 52242, United States
| | | | - Hien M Nguyen
- Department of Chemistry, University of Iowa, Iowa 52242, United States
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11
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Fleck C, Memmel E, Fölsing M, Poll B, Hackl T, Seibel J, Maison W. Synthesis and Evaluation of Neoglycoconjugates Based on Adamantyl Scaffolds. European J Org Chem 2015. [DOI: 10.1002/ejoc.201403517] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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12
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Venukumar P, Sudharani C, Sridhar PR. A one-pot septanoside formation and glycosylation of acyclic dithioacetals derived from 1,2-cyclopropanated sugars. Chem Commun (Camb) 2014; 50:2218-21. [DOI: 10.1039/c3cc49116a] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
A one-pot septanoside formation and glycosylation of acyclic dithioacetals derived from 1,2-cyclopropanated sugars is reported.
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13
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Schmidt B, Hauke S. Cross metathesis of allyl alcohols: how to suppress and how to promote double bond isomerization. Org Biomol Chem 2013; 11:4194-206. [PMID: 23676990 DOI: 10.1039/c3ob40167g] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Under standard conditions the cross metathesis of allyl alcohols and methyl acrylate is accompanied by the formation of ketones, resulting from uncontrolled and undesired double bond isomerization. By conducting the CM in the presence of phenol, the catalyst loading and the reaction time required for quantiative conversion can be reduced, and isomerization can be suppressed. On the other hand, consecutive isomerization can be deliberately promoted by evaporating excess methyl acrylate after completing cross metathesis and by adding a base or silane as chemical triggers.
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Affiliation(s)
- Bernd Schmidt
- Universitaet Potsdam, Institut fuer Chemie, Organische Synthesechemie, Karl-Liebknecht-Strasse 24-25, D-14476 Potsdam-Golm, Germany.
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14
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Vannam R, Peczuh MW. Synthesis of C-Septanosides from Pyranoses via Vinyl Addition and Electrophilic Cyclization. Org Lett 2013; 15:4122-5. [DOI: 10.1021/ol401769k] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Raghu Vannam
- Department of Chemistry, University of Connecticut, 55 North Eagleville Road, U-3060, Storrs, Connecticut 06269, United States
| | - Mark W. Peczuh
- Department of Chemistry, University of Connecticut, 55 North Eagleville Road, U-3060, Storrs, Connecticut 06269, United States
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15
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Kaas Q, Craik DJ. NMR of plant proteins. PROGRESS IN NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY 2013; 71:1-34. [PMID: 23611313 DOI: 10.1016/j.pnmrs.2013.01.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/02/2013] [Accepted: 01/21/2013] [Indexed: 06/02/2023]
Affiliation(s)
- Quentin Kaas
- The University of Queensland, Institute for Molecular Bioscience, Brisbane, Queensland 4072, Australia
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16
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Sridhar PR, Venukumar P. A Ring Expansion–Glycosylation Strategy toward the Synthesis of Septano-oligosaccharides. Org Lett 2012; 14:5558-61. [DOI: 10.1021/ol302677z] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
| | - Patteti Venukumar
- School of Chemistry, University of Hyderabad, Hyderabad 500046, India
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17
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Saha J, Peczuh MW. Glycosylations with a septanosyl fluoride donor lacking a C2 protecting group. Tetrahedron Lett 2012. [DOI: 10.1016/j.tetlet.2012.08.039] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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18
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Jackowski O, Chrétien F, Didierjean C, Chapleur Y. Formation of septanoses from hexopyranosides via 5,6-exo-glycals. Carbohydr Res 2012; 356:93-103. [DOI: 10.1016/j.carres.2012.02.026] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2011] [Revised: 02/20/2012] [Accepted: 02/25/2012] [Indexed: 01/07/2023]
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19
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Tanaka H, Kawai T, Adachi Y, Hanashima S, Yamaguchi Y, Ohno N, Takahashi T. Synthesis of β(1,3) oligoglucans exhibiting a Dectin-1 binding affinity and their biological evaluation. Bioorg Med Chem 2012; 20:3898-914. [PMID: 22578491 DOI: 10.1016/j.bmc.2012.04.017] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2012] [Revised: 04/06/2012] [Accepted: 04/07/2012] [Indexed: 02/07/2023]
Abstract
In this report, we describe the synthesis and biological evaluation of β(1,3) oligosaccharides that contain an aminoalkyl group and their biological evaluation. A 2,3 diol glycoside with a 4,6 benzylidene protecting group was used as an effective glycosyl acceptor for the synthesis of some β(1,3) linked glycosides. The use of a combination of a linear tetrasaccharide and a branched pentasaccharide as glycosyl donors led to the preparation of β(1,3) linear octa- to hexadecasaccharides and branched nona- to heptadecasaccharides in good total yields. Measurements of the competitive effects of the oligosaccharides on the binding of a soluble form of Dectin-1 to a solid-supported Schizophyllan (SPG) revealed that the branched heptadecasaccharide and the linear hexadecasaccharides also have binding activity for Dectin-1. In addition, the two oligosaccharides, both of which contain a β(1,3) hexadecasaccharide backbone, exhibited agonist activity in a luciferase-assisted NF-κB assay. STD-NMR analyses of complexes of Dectin-1 and the linear hexadecasaccharides clearly indicate Dectin-1 specifically recognizes the sugar part of the oligosaccharides and not the aminoalkyl chain.
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Affiliation(s)
- Hiroshi Tanaka
- Department of Applied Chemistry, Graduate School of Science and Engineering, Tokyo Institute of Technology, 2-12-1-S1-35 Ookayama, Meguro, Tokyo 152-8552, Japan.
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20
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Abstract
Seven-atom ring sugars, called septanoses, are increasingly the focus of scientific inquiries because of their potential biological activities. This article details the synthesis, conformational analysis, and protein-binding properties of septanose carbohydrates. A distinction is drawn between septanoses that are substituted in the 6-position of the ring and those that are not. When a C-6 substituent is absent, the structure is essentially that of an aldohexose in its septanose, rather than furanose or pyranose, ring form; they may play as-of-yet unexplored roles in glycobiology. Septanoses having a hydroxymethyl group at C-6, on the other hand, are ring-expanded analogues of pyranoses. Syntheses have moved beyond the preparation of seven-membered ring monosaccharides to the development of septanosyl donors. These donors have been used in the synthesis of novel di- and trisaccharides that contain septanoses as well as a variety of glycoconjugates. Low-energy conformations adopted by septanoses have been organized based on ring substitution and stereochemistry. Instances where septanoses have been demonstrated to bind to natural proteins are presented and analyzed. The major conclusion drawn in the chapter is that advances in the synthesis of septanose carbohydrates now enable a detailed investigation of their activity in a number of biological contexts.
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21
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Saha J, Peczuh MW. Expanding the Scope of Aminosugars: Synthesis of 2‐Amino Septanosyl Glycoconjugates Using Septanosyl Fluoride Donors. Chemistry 2011; 17:7357-65. [DOI: 10.1002/chem.201003721] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2010] [Revised: 03/21/2011] [Indexed: 01/25/2023]
Affiliation(s)
- Jaideep Saha
- Department of Chemistry, University of Connecticut, 55 North Eagleville Road, U‐3060, Storrs, CT 06269 (USA), Fax: (+1) 860‐486‐2981
| | - Mark W. Peczuh
- Department of Chemistry, University of Connecticut, 55 North Eagleville Road, U‐3060, Storrs, CT 06269 (USA), Fax: (+1) 860‐486‐2981
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22
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Hewitt RJ, Harvey JE. Synthesis of C-furanosides from ad-glucal-derived cyclopropane through a ring-expansion/ring-contraction sequence. Chem Commun (Camb) 2011; 47:421-3. [DOI: 10.1039/c0cc02244f] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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23
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Duff MR, Fyvie WS, Markad SD, Frankel AE, Kumar CV, Gascón JA, Peczuh MW. Computational and experimental investigations of mono-septanoside binding by Concanavalin A: correlation of ligand stereochemistry to enthalpies of binding. Org Biomol Chem 2010; 9:154-64. [PMID: 21085738 DOI: 10.1039/c0ob00425a] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Structure-energy relationships for a small group of pyranose and septanose mono-saccharide ligands are developed for binding to Concanavalin A (ConA). The affinity of ConA for methyl "manno"β-septanoside 7 was found to be higher than any of the previously reported mono-septanoside ligands. Isothermal titration calorimetry (ITC) in conjunction with docking simulations and quantum mechanics/molecular mechanics (QM/MM) modeling established the specific role of binding enthalpy in the structure-energy relations of ConA bound to natural mono-saccharides and unnatural mono-septanosides. An important aspect in the differential binding among ligands is the deformation energy required to reorganize internal hydroxyl groups upon binding of the ligand to ConA.
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Affiliation(s)
- Michael R Duff
- Department of Chemistry, The University of Connecticut, 55 North Eagleville Road, Storrs, CT 06269, USA
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El-Hawiet A, Kitova EN, Liu L, Klassen JS. Quantifying labile protein-ligand interactions using electrospray ionization mass spectrometry. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2010; 21:1893-1899. [PMID: 20801056 DOI: 10.1016/j.jasms.2010.07.008] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2010] [Revised: 07/19/2010] [Accepted: 07/21/2010] [Indexed: 05/29/2023]
Abstract
A new electrospray ionization mass spectrometry (ES-MS) approach for quantifying protein-ligand complexes that are prone to in-source (gas-phase) dissociation is described. The method, referred to here as the reference ligand ES-MS method, is based on the direct ES-MS assay and competitive ligand binding. A reference ligand (L(ref)), which binds specifically to the protein (P), at the same binding site as the ligand (L) of interest, with known affinity and forms a stable protein-ligand complex in the gas phase, is added to the solution. The fraction of P bound to L(ref), which is determined directly from the ES mass spectrum, is sensitive to the fraction of P bound to L in solution and enables the affinity of P for L to be determined. A mathematical framework for the implementation of the method in cases where P has one or two specific ligand binding sites is given. Affinities of two carbohydrate-binding proteins, a single chain fragment of a monoclonal antibody and the lectin concanavalin A, for monosaccharide ligands are reported and the results are shown to agree with values obtained using isothermal titration calorimetry.
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Affiliation(s)
- Amr El-Hawiet
- Alberta Ingenuity Centre for Carbohydrate Science, Department of Chemistry, University of Alberta, Edmonton, Alberta, Canada
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25
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Hewitt RJ, Harvey JE. Synthesis of Oxepines and 2-Branched Pyranosides from a d-Glucal-Derived gem-Dibromo-1,2-cyclopropanated Sugar. J Org Chem 2010; 75:955-8. [DOI: 10.1021/jo902306a] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Russell J. Hewitt
- School of Chemical and Physical Sciences, Victoria University of Wellington, P.O. Box 600, Wellington, New Zealand
| | - Joanne E. Harvey
- School of Chemical and Physical Sciences, Victoria University of Wellington, P.O. Box 600, Wellington, New Zealand
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26
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Mechanistic studies of rearrangements during the ring expansions of cyclopropanated carbohydrates. Tetrahedron Lett 2009. [DOI: 10.1016/j.tetlet.2009.10.031] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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Batchelor R, Harvey JE, Northcote PT, Teesdale-Spittle P, Hoberg JO. Heptanosides from Galactose-Derived Oxepenes via Stereoselective Addition Reactions. J Org Chem 2009; 74:7627-32. [DOI: 10.1021/jo901706e] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Rhys Batchelor
- Centre for Biodiscovery, Victoria University of Wellington, Wellington, New Zealand
| | - Joanne E. Harvey
- Centre for Biodiscovery, Victoria University of Wellington, Wellington, New Zealand
| | - Peter T. Northcote
- Centre for Biodiscovery, Victoria University of Wellington, Wellington, New Zealand
| | | | - John O. Hoberg
- Department of Chemistry, University of Wyoming, Laramie, Wyoming 82071
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28
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Castro S, Johnson CS, Surana B, Peczuh MW. An oxepinone route to carbohydrate based oxepines. Tetrahedron 2009. [DOI: 10.1016/j.tet.2009.07.041] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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29
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Synthesis and NMR spectroscopic analysis of 3-nitro-pyranoside, 3-nitro-septanoside and 4-nitro-septanoside derivatives by condensation of the anion of nitromethane with glycoside dialdehydes. ACTA ACUST UNITED AC 2009. [DOI: 10.1016/j.tetasy.2009.08.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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30
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Affiliation(s)
- Jaideep Saha
- Department of Chemistry, University of Connecticut, 55 North Eagleville Road U-3060, Storrs, Connecticut 06269
| | - Mark W. Peczuh
- Department of Chemistry, University of Connecticut, 55 North Eagleville Road U-3060, Storrs, Connecticut 06269
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Synthesis of the first example of a nucleoside analogue bearing a 5′-deoxy-β-d-allo-septanose as a seven-membered ring sugar moiety. Carbohydr Res 2009; 344:448-53. [DOI: 10.1016/j.carres.2008.12.019] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2008] [Revised: 12/19/2008] [Accepted: 12/23/2008] [Indexed: 01/13/2023]
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32
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Ganesh NV, Jayaraman N. Synthesis of Aryl, Glycosyl, and Azido Septanosides through Ring Expansion of 1,2-Cyclopropanated Sugars. J Org Chem 2008; 74:739-46. [DOI: 10.1021/jo801967s] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- N. Vijaya Ganesh
- Department of Organic Chemistry, Indian Institute of Science, Bangalore 560 012, India
| | - N. Jayaraman
- Department of Organic Chemistry, Indian Institute of Science, Bangalore 560 012, India
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33
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Markad SD, Xia S, Snyder NL, Surana B, Morton MD, Hadad CM, Peczuh MW. Stereoselectivity in the Epoxidation of Carbohydrate-Based Oxepines. J Org Chem 2008; 73:6341-54. [DOI: 10.1021/jo800979a] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Shankar D. Markad
- Department of Chemistry, The University of Connecticut, 55 North Eagleville Road, Storrs, Connecticut 06269, and Department of Chemistry, The Ohio State University, 100 West 18th Avenue, Columbus, Ohio 43210
| | - Shijing Xia
- Department of Chemistry, The University of Connecticut, 55 North Eagleville Road, Storrs, Connecticut 06269, and Department of Chemistry, The Ohio State University, 100 West 18th Avenue, Columbus, Ohio 43210
| | - Nicole L. Snyder
- Department of Chemistry, The University of Connecticut, 55 North Eagleville Road, Storrs, Connecticut 06269, and Department of Chemistry, The Ohio State University, 100 West 18th Avenue, Columbus, Ohio 43210
| | - Bikash Surana
- Department of Chemistry, The University of Connecticut, 55 North Eagleville Road, Storrs, Connecticut 06269, and Department of Chemistry, The Ohio State University, 100 West 18th Avenue, Columbus, Ohio 43210
| | - Martha D. Morton
- Department of Chemistry, The University of Connecticut, 55 North Eagleville Road, Storrs, Connecticut 06269, and Department of Chemistry, The Ohio State University, 100 West 18th Avenue, Columbus, Ohio 43210
| | - Christopher M. Hadad
- Department of Chemistry, The University of Connecticut, 55 North Eagleville Road, Storrs, Connecticut 06269, and Department of Chemistry, The Ohio State University, 100 West 18th Avenue, Columbus, Ohio 43210
| | - Mark W. Peczuh
- Department of Chemistry, The University of Connecticut, 55 North Eagleville Road, Storrs, Connecticut 06269, and Department of Chemistry, The Ohio State University, 100 West 18th Avenue, Columbus, Ohio 43210
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34
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Schmidt B, Biernat A. The Tandem Ring‐Closing Metathesis–Isomerization Approach to 6‐Deoxyglycals. Chemistry 2008; 14:6135-41. [DOI: 10.1002/chem.200800567] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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35
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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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36
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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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37
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Castro S, Cherney EC, Snyder NL, Peczuh MW. Synthesis of substituted septanosyl-1,2,3-triazoles. Carbohydr Res 2007; 342:1366-72. [PMID: 17466290 DOI: 10.1016/j.carres.2007.03.026] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2007] [Revised: 03/22/2007] [Accepted: 03/26/2007] [Indexed: 01/27/2023]
Abstract
A carbohydrate-based oxepine, derived from 2-deoxy-D-arabino-hexopyranose, was used to prepare a family of septanosyl-1,2,3-triazoles in four steps. DMDO mediated epoxidation of the oxepine followed by trapping of the intermediate 1,2-anhydroseptanose by sodium azide gave the beta-substituted glycosyl azide. The septanosyl azide was then reacted with a number of alkynes under thermal Huisgen or copper(I) mediated reaction conditions. Hydrogenolysis of benzyl protecting groups gave substituted septanosyl-1,2,3-triazoles. The new septanose-based structures were then evaluated as potential glycosidase inhibitors.
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Affiliation(s)
- Steve Castro
- Department of Chemistry, University of Connecticut, U-3060, 55 North Eagleville Road, Storrs, CT 06269, United States
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38
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Ababou A, Ladbury JE. Survey of the year 2005: literature on applications of isothermal titration calorimetry. J Mol Recognit 2007; 20:4-14. [PMID: 17006876 DOI: 10.1002/jmr.803] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Isothermal titration calorimetry (ITC) can provide a full thermodynamic characterization of an interaction. Its usage does not suffer from constraints of molecular size, shape or chemical constitution. Neither is there any need for chemical modification or attachment to solid support. This ease of use has made it an invaluable instrumental resource and led to its appearance in many laboratories. Despite this, the value of the thermodynamic parameterization has, only quite recently, become widely appreciated. Although our understanding of the correlation between thermodynamic data and structural details continues to be somewhat naïve, a large number of publications have begun to improve the situation. In this overview of the literature for 2005, we have attempted to highlight works of interest and novelty. Furthermore, we draw attention to those works which we feel have provided a route to better analysis and increased our ability to understand the meaning of thermodynamic change on binding.
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Affiliation(s)
- Adessamad Ababou
- Department of Biochemistry and Molecular Biology, University College London, Gower Street, London WC1E 6BT, UK
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39
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DeMatteo MP, Mei S, Fenton R, Morton M, Baldisseri DM, Hadad CM, Peczuh MW. Conformational analysis of methyl 5-O-methyl septanosides: effect of glycosylation on conformer populations. Carbohydr Res 2006; 341:2927-45. [PMID: 17056019 DOI: 10.1016/j.carres.2006.09.024] [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] [Received: 08/16/2006] [Revised: 09/15/2006] [Accepted: 09/28/2006] [Indexed: 11/26/2022]
Abstract
Methyl 5-O-methyl-alpha-d-glycero-d-idoseptanoside (3) and methyl 5-O-methyl-beta-d-glycero-d-guloseptanoside (4) were investigated as (1-->5)-linked di-/oligoseptanoside mimetics. Here we report the synthesis of 3 and 4 and describe their preferred solution conformations through a combination of ab initio/DFT calculations and (1)H (3)J(H,H) NMR coupling constant analysis. The conformations of 3 and 4 observed in this study are discussed in comparison to those of the parent (C5 hydroxy) compounds 1 and 2. The results indicate that methyl 5-O-methyl-alpha-septanoside 3 is relatively rigid and adopts the same (3,4)TC(5,6) conformation as 1. Methyl 5-O-methyl-beta-septanoside 4 is somewhat less rigid than its parent septanoside (2). In addition to the (6,O)TC(4,5) conformation adopted by 2, beta-septanoside 4 also populates the adjacent (3,4)TC(5,6) conformation. Glycosylation at C5 on beta-septanoside 4 therefore increases its overall flexibility and allows access to alternative ring conformations.
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Affiliation(s)
- Matthew P DeMatteo
- Department of Chemistry, The Ohio State University, 100 West 18th Avenue, Columbus, OH 43210, USA
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