1
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Moreau F, Atamanyuk D, Blaukopf M, Barath M, Herczeg M, Xavier NM, Monbrun J, Airiau E, Henryon V, Leroy F, Floquet S, Bonnard D, Szabla R, Brown C, Junop MS, Kosma P, Gerusz V. Potentiating Activity of GmhA Inhibitors on Gram-Negative Bacteria. J Med Chem 2024; 67:6610-6623. [PMID: 38598312 PMCID: PMC11056994 DOI: 10.1021/acs.jmedchem.4c00037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2024] [Revised: 02/28/2024] [Accepted: 03/29/2024] [Indexed: 04/12/2024]
Abstract
Inhibition of the biosynthesis of bacterial heptoses opens novel perspectives for antimicrobial therapies. The enzyme GmhA responsible for the first committed biosynthetic step catalyzes the conversion of sedoheptulose 7-phosphate into d-glycero-d-manno-heptose 7-phosphate and harbors a Zn2+ ion in the active site. A series of phosphoryl- and phosphonyl-substituted derivatives featuring a hydroxamate moiety were designed and prepared from suitably protected ribose or hexose derivatives. High-resolution crystal structures of GmhA complexed to two N-formyl hydroxamate inhibitors confirmed the binding interactions to a central Zn2+ ion coordination site. Some of these compounds were found to be nanomolar inhibitors of GmhA. While devoid of HepG2 cytotoxicity and antibacterial activity of their own, they demonstrated in vitro lipopolysaccharide heptosylation inhibition in Enterobacteriaceae as well as the potentiation of erythromycin and rifampicin in a wild-type Escherichia coli strain. These inhibitors pave the way for a novel treatment of Gram-negative infections.
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Affiliation(s)
- François Moreau
- Mutabilis, 102 Avenue Gaston Roussel, Romainville 93230, France
| | | | - Markus Blaukopf
- Department
of Chemistry, University of Natural Resources
and Life Sciences, Muthgasse
18, Vienna A-1190, Austria
| | - Marek Barath
- Department
of Chemistry, University of Natural Resources
and Life Sciences, Muthgasse
18, Vienna A-1190, Austria
- Institute
of Chemistry, Center for Glycomics, Slovak
Academy of Sciences, Dúbravská cesta 9, Bratislava SK-845 38, Slovakia
| | - Mihály Herczeg
- Department
of Chemistry, University of Natural Resources
and Life Sciences, Muthgasse
18, Vienna A-1190, Austria
- Department
of Pharmaceutical Chemistry, University
of Debrecen, Debrecen 4032, Hungary
| | - Nuno M. Xavier
- Department
of Chemistry, University of Natural Resources
and Life Sciences, Muthgasse
18, Vienna A-1190, Austria
- Centro
de Química Estrutural, Institute of Molecular Sciences, Faculdade de Ciências, Universidade de Lisboa, Ed. C8, 5° Piso, Campo Grande, Lisboa 1749-016, Portugal
| | | | | | | | - Frédéric Leroy
- Carbosynth
Limited, 8&9 Old
Station Business Park, Compton, Berkshire RG20 6NE, U.K.
| | | | - Damien Bonnard
- Mutabilis, 102 Avenue Gaston Roussel, Romainville 93230, France
| | - Robert Szabla
- Department
of Biochemistry, University of Western Ontario, London, ON N6A 3K7, Canada
| | - Chris Brown
- Department
of Biochemistry, University of Western Ontario, London, ON N6A 3K7, Canada
| | - Murray S. Junop
- Department
of Biochemistry, University of Western Ontario, London, ON N6A 3K7, Canada
| | - Paul Kosma
- Department
of Chemistry, University of Natural Resources
and Life Sciences, Muthgasse
18, Vienna A-1190, Austria
| | - Vincent Gerusz
- Mutabilis, 102 Avenue Gaston Roussel, Romainville 93230, France
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2
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Herczeg M, Demeter F, Nagy T, Rusznyák Á, Hodek J, Sipos É, Lekli I, Fenyvesi F, Weber J, Kéki S, Borbás A. Block Synthesis and Step-Growth Polymerization of C-6-Sulfonatomethyl-Containing Sulfated Malto-Oligosaccharides and Their Biological Profiling. Int J Mol Sci 2024; 25:677. [PMID: 38203849 PMCID: PMC10779578 DOI: 10.3390/ijms25010677] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Revised: 12/30/2023] [Accepted: 12/31/2023] [Indexed: 01/12/2024] Open
Abstract
Highly sulfated malto-oligomers, similar to heparin and heparan-sulfate, have good antiviral, antimetastatic, anti-inflammatory and cell growth inhibitory effects. Due to their broad biological activities and simple structure, sulfated malto-oligomer derivatives have a great therapeutic potential, therefore, the development of efficient synthesis methods for their production is of utmost importance. In this work, preparation of α-(1→4)-linked oligoglucosides containing a sulfonatomethyl moiety at position C-6 of each glucose unit was studied by different approaches. Malto-oligomeric sulfonic acid derivatives up to dodecasaccharides were prepared by polymerization using different protecting groups, and the composition of the product mixtures was analyzed by MALDI-MS methods and size-exclusion chromatography. Synthesis of lower oligomers was also accomplished by stepwise and block synthetic methods, and then the oligosaccharide products were persulfated. The antiviral, anti-inflammatory and cell growth inhibitory activity of the fully sulfated malto-oligosaccharide sulfonic acids were determined by in vitro tests. Four tested di- and trisaccharide sulfonic acids effectively inhibited the activation of the TNF-α-mediated inflammatory pathway without showing cytotoxicity.
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Affiliation(s)
- Mihály Herczeg
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Debrecen, Egyetem tér 1, H-4032 Debrecen, Hungary;
| | - Fruzsina Demeter
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Debrecen, Egyetem tér 1, H-4032 Debrecen, Hungary;
| | - Tibor Nagy
- Department of Applied Chemistry, Faculty of Science and Technology, Institute of Chemistry, University of Debrecen, Egyetem tér 1, H-4032 Debrecen, Hungary; (T.N.); (S.K.)
| | - Ágnes Rusznyák
- Department of Molecular and Nanopharmaceutics, Faculty of Pharmacy, University of Debrecen, Nagyerdei Körút 98, H-4032 Debrecen, Hungary; (Á.R.); (F.F.)
- Institute of Healthcare Industry, University of Debrecen, Egyetem tér 1, H-4032 Debrecen, Hungary
| | - Jan Hodek
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Flemingovo nam. 2, CZ-16000 Prague, Czech Republic; (J.H.); (J.W.)
| | - Éva Sipos
- Department of Pharmacodynamics, Faculty of Pharmacy, University of Debrecen, Nagyerdei Körút 98, H-4032 Debrecen, Hungary; (É.S.); (I.L.)
| | - István Lekli
- Department of Pharmacodynamics, Faculty of Pharmacy, University of Debrecen, Nagyerdei Körút 98, H-4032 Debrecen, Hungary; (É.S.); (I.L.)
| | - Ferenc Fenyvesi
- Department of Molecular and Nanopharmaceutics, Faculty of Pharmacy, University of Debrecen, Nagyerdei Körút 98, H-4032 Debrecen, Hungary; (Á.R.); (F.F.)
| | - Jan Weber
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Flemingovo nam. 2, CZ-16000 Prague, Czech Republic; (J.H.); (J.W.)
| | - Sándor Kéki
- Department of Applied Chemistry, Faculty of Science and Technology, Institute of Chemistry, University of Debrecen, Egyetem tér 1, H-4032 Debrecen, Hungary; (T.N.); (S.K.)
| | - Anikó Borbás
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Debrecen, Egyetem tér 1, H-4032 Debrecen, Hungary;
- HUN-REN-UD Molecular Recognition and Interaction Research Group, University of Debrecen, Egyetem tér 1, H-4032 Debrecen, Hungary
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3
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Lőrincz EB, Herczeg M, Houser J, Rievajová M, Kuki Á, Malinovská L, Naesens L, Wimmerová M, Borbás A, Herczegh P, Bereczki I. Amphiphilic Sialic Acid Derivatives as Potential Dual-Specific Inhibitors of Influenza Hemagglutinin and Neuraminidase. Int J Mol Sci 2023; 24:17268. [PMID: 38139095 PMCID: PMC10743929 DOI: 10.3390/ijms242417268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Revised: 12/01/2023] [Accepted: 12/06/2023] [Indexed: 12/24/2023] Open
Abstract
In the shadow of SARS-CoV-2, influenza seems to be an innocent virus, although new zoonotic influenza viruses evolved by mutations may lead to severe pandemics. According to WHO, there is an urgent need for better antiviral drugs. Blocking viral hemagglutinin with multivalent N-acetylneuraminic acid derivatives is a promising approach to prevent influenza infection. Moreover, dual inhibition of both hemagglutinin and neuraminidase may result in a more powerful effect. Since both viral glycoproteins can bind to neuraminic acid, we have prepared three series of amphiphilic self-assembling 2-thio-neuraminic acid derivatives constituting aggregates in aqueous medium to take advantage of their multivalent effect. One of the series was prepared by the azide-alkyne click reaction, and the other two by the thio-click reaction to yield neuraminic acid derivatives containing lipophilic tails of different sizes and an enzymatically stable thioglycosidic bond. Two of the three bis-octyl derivatives produced proved to be active against influenza viruses, while all three octyl derivatives bound to hemagglutinin and neuraminidase from H1N1 and H3N2 influenza types.
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Affiliation(s)
- Eszter Boglárka Lőrincz
- Department of Pharmaceutical Chemistry, University of Debrecen, H-4032 Debrecen, Hungary; (E.B.L.); (M.H.); (A.B.); (P.H.)
- Doctoral School of Pharmaceutical Sciences, University of Debrecen, H-4032 Debrecen, Hungary
| | - Mihály Herczeg
- Department of Pharmaceutical Chemistry, University of Debrecen, H-4032 Debrecen, Hungary; (E.B.L.); (M.H.); (A.B.); (P.H.)
| | - Josef Houser
- National Centre for Biomolecular Research, Masaryk University, 611 37 Brno, Czech Republic; (J.H.); (L.M.); (M.W.)
- Central European Institute of Technology, Masaryk University, 625 00 Brno, Czech Republic
| | - Martina Rievajová
- Department of Biochemistry, Faculty of Science, Masaryk University, 611 37 Brno, Czech Republic;
| | - Ákos Kuki
- Department of Applied Chemistry, University of Debrecen, H-4032 Debrecen, Hungary;
| | - Lenka Malinovská
- National Centre for Biomolecular Research, Masaryk University, 611 37 Brno, Czech Republic; (J.H.); (L.M.); (M.W.)
- Central European Institute of Technology, Masaryk University, 625 00 Brno, Czech Republic
| | - Lieve Naesens
- Rega Institute for Medical Research, KU Leuven, B-3000 Leuven, Belgium;
| | - Michaela Wimmerová
- National Centre for Biomolecular Research, Masaryk University, 611 37 Brno, Czech Republic; (J.H.); (L.M.); (M.W.)
- Central European Institute of Technology, Masaryk University, 625 00 Brno, Czech Republic
- Department of Biochemistry, Faculty of Science, Masaryk University, 611 37 Brno, Czech Republic;
| | - Anikó Borbás
- Department of Pharmaceutical Chemistry, University of Debrecen, H-4032 Debrecen, Hungary; (E.B.L.); (M.H.); (A.B.); (P.H.)
- National Laboratory of Virology, University of Pécs, H-7624 Pécs, Hungary
- HUN-REN–UD Molecular Recognition and Interaction Research Group, University of Debrecen, H-4032 Debrecen, Hungary
| | - Pál Herczegh
- Department of Pharmaceutical Chemistry, University of Debrecen, H-4032 Debrecen, Hungary; (E.B.L.); (M.H.); (A.B.); (P.H.)
| | - Ilona Bereczki
- Department of Pharmaceutical Chemistry, University of Debrecen, H-4032 Debrecen, Hungary; (E.B.L.); (M.H.); (A.B.); (P.H.)
- National Laboratory of Virology, University of Pécs, H-7624 Pécs, Hungary
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4
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Lőrincz EB, Tóth G, Spolárics J, Herczeg M, Hodek J, Zupkó I, Minorics R, Ádám D, Oláh A, Zouboulis CC, Weber J, Nagy L, Ostorházi E, Bácskay I, Borbás A, Herczegh P, Bereczki I. Mannich-type modifications of (-)-cannabidiol and (-)-cannabigerol leading to new, bioactive derivatives. Sci Rep 2023; 13:19618. [PMID: 37949940 PMCID: PMC10638401 DOI: 10.1038/s41598-023-45565-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Accepted: 10/20/2023] [Indexed: 11/12/2023] Open
Abstract
(-)-Cannabidiol (CBD) and (-)-cannabigerol (CBG) are two major non-psychotropic phytocannabinoids that have many beneficial biological properties. However, due to their low water solubility and prominent first-pass metabolism, their oral bioavailability is moderate, which is unfavorable for medicinal use. Therefore, there is a great need for appropriate chemical modifications to improve their physicochemical and biological properties. In this study, Mannich-type reaction was used for the synthetic modification of CBD and CBG for the first time, and thus fifteen new cannabinoid derivatives containing one or two tertiary amino groups were prepared. Thereafter the antiviral, antiproliferative and antibacterial properties of the derivatives and their effects on certain skin cells were investigated. Some modified CBD derivatives showed remarkable antiviral activity against SARS-CoV-2 without cytotoxic effect, while synthetic modifications on CBG resulted in a significant increase in antiproliferative activity in some cases compared to the parent compound.
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Affiliation(s)
- Eszter Boglárka Lőrincz
- Department of Pharmaceutical Chemistry, University of Debrecen, Debrecen, 4032, Hungary
- Doctoral School of Pharmaceutical Sciences, University of Debrecen, Debrecen, 4032, Hungary
| | - Gergely Tóth
- Department of Pharmaceutical Chemistry, University of Debrecen, Debrecen, 4032, Hungary
| | - Júlia Spolárics
- Department of Pharmaceutical Chemistry, University of Debrecen, Debrecen, 4032, Hungary
| | - Mihály Herczeg
- Department of Pharmaceutical Chemistry, University of Debrecen, Debrecen, 4032, Hungary
| | - Jan Hodek
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Science, Prague, 166 10, Czech Republic
| | - István Zupkó
- Institute of Pharmacodynamics and Biopharmacy, University of Szeged, Szeged, 6720, Hungary
| | - Renáta Minorics
- Institute of Pharmacodynamics and Biopharmacy, University of Szeged, Szeged, 6720, Hungary
| | - Dorottya Ádám
- Department of Physiology, Faculty of Medicine, University of Debrecen, Debrecen, 4032, Hungary
- Doctoral School of Molecular Medicine, University of Debrecen, Debrecen, 4032, Hungary
| | - Attila Oláh
- Department of Physiology, Faculty of Medicine, University of Debrecen, Debrecen, 4032, Hungary
| | - Christos C Zouboulis
- Departments of Dermatology, Venereology, Allergology and Immunology, Staedtisches Klinikum Dessau, Brandenburg Medical School Theodor Fontane and Faculty of Health Sciences Brandenburg, 06847, Dessau, Germany
| | - Jan Weber
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Science, Prague, 166 10, Czech Republic
| | - Lajos Nagy
- Department of Applied Chemistry, University of Debrecen, Debrecen, 4032, Hungary
| | - Eszter Ostorházi
- Department of Medical Microbiology, Semmelweis University, Budapest, 1089, Hungary
| | - Ildikó Bácskay
- Department of Pharmaceutical Technology, University of Debrecen, Debrecen, 4032, Hungary
| | - Anikó Borbás
- Department of Pharmaceutical Chemistry, University of Debrecen, Debrecen, 4032, Hungary.
- National Laboratory of Virology, Szentágothai Research Centre, Pécs, 7624, Hungary.
- HUN-REN-UD Molecular Recognition and Interaction Research Group, University of Debrecen, Debrecen, 4032, Hungary.
| | - Pál Herczegh
- Department of Pharmaceutical Chemistry, University of Debrecen, Debrecen, 4032, Hungary
- HUN-REN-UD Pharmamodul Research Group, University of Debrecen, Debrecen, 4032, Hungary
| | - Ilona Bereczki
- Department of Pharmaceutical Chemistry, University of Debrecen, Debrecen, 4032, Hungary.
- National Laboratory of Virology, Szentágothai Research Centre, Pécs, 7624, Hungary.
- HUN-REN-UD Pharmamodul Research Group, University of Debrecen, Debrecen, 4032, Hungary.
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5
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Bege M, Herczeg M, Bereczki I, Debreczeni N, Bényei A, Herczegh P, Borbás A. Triaza-tricyclanos - synthesis of a new class of tricyclic nucleoside analogues by stereoselective cascade cyclocondensation. Org Biomol Chem 2023; 21:2213-2219. [PMID: 36804654 DOI: 10.1039/d3ob00154g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
Abstract
Herein, we report a stereoselective synthesis of a novel type of conformationally constrained nucleoside analogue in which the sugar part is replaced by a new symmetrical tricycle consisting of a morpholine ring condensed with two imidazolidines. 1,5-Dialdehydes obtained from trityl- and dimethoxytrityl-protected uridine, ribothymidine, inosine, cytidine, adenosine and guanosine by metaperiodate oxidation were reacted with N1,N3-dibenzyl-1,2,3-triaminopropane; the latter reactant was produced using a new method that avoids explosive intermediates. Reactions of dialdehydes with propane-triamine via cascade tricyclization resulted in the corresponding triaza-tricyclic derivatives bearing three new stereogenic centers in high yields. Out of the eight possible diastereoisomers, one stereoisomer was formed in each case due to the chiral control of the starting nucleoside-dialdehydes and the steric constraint of the condensed ring system. The absolute configuration of the new stereotriad was determined by X-ray diffraction and NMR experiments. A mechanistic study performed under reductive conditions to trap the presumed bicyclic intermediate showed that the triamine reactant first attacks the 2'-aldehyde group, followed by a rapid bicyclization to form the imidazolidino-morpholine unit.
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Affiliation(s)
- Miklós Bege
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Debrecen, Egyetem tér 1, 4032 Debrecen, Hungary. .,Institute of Healthcare Industry, University of Debrecen, Nagyerdei krt 98, 4032 Debrecen, Hungary.,MTA-DE Molecular Recognition and Interaction Research Group, University of Debrecen, Egyetem tér 1, 4032 Debrecen, Hungary
| | - Mihály Herczeg
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Debrecen, Egyetem tér 1, 4032 Debrecen, Hungary.
| | - Ilona Bereczki
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Debrecen, Egyetem tér 1, 4032 Debrecen, Hungary. .,National Laboratory of Virology, University of Pécs, Ifjúság útja 20, H-7624 Pécs, Hungary.,Pharmamodul Research Group, University of Debrecen, Nagyerdei krt 98, 4032 Debrecen, Hungary
| | - Nóra Debreczeni
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Debrecen, Egyetem tér 1, 4032 Debrecen, Hungary.
| | - Attila Bényei
- X-ray Diffraction Laboratory, University of Debrecen, Egyetem tér 1, 4032 Debrecen, Hungary
| | - Pál Herczegh
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Debrecen, Egyetem tér 1, 4032 Debrecen, Hungary.
| | - Anikó Borbás
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Debrecen, Egyetem tér 1, 4032 Debrecen, Hungary. .,National Laboratory of Virology, University of Pécs, Ifjúság útja 20, H-7624 Pécs, Hungary
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6
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Borbás A, Herczeg M, Demeter F, Bényei A. Synthesis of the Three Most Expensive l-Hexose Thioglycosides from d-Glucose. SYNTHESIS-STUTTGART 2022. [DOI: 10.1055/s-0042-1751394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
AbstractThe biologically important l-hexoses, which are less widespread than d-hexoses, cannot be obtained from natural sources or can only be extracted very costly. Due to the complexity of their synthesis, their commercially available derivatives (which are sold mostly in free form) are also very expensive, which is further exacerbated by the current rapid rise in prices. In the present work, starting from the cheapest d-hexose, d-glucose, using inexpensive and readily available chemicals, a reaction pathway was developed in which the three most expensive l-hexoses (l-idose, l-altrose, and l-talose) were successfully prepared in orthogonally protected thioglycoside form, ready for glycosylation. The l-ido and l-talo derivatives were synthesized by C-5 epimerization of the corresponding 5,6-unsaturated thioglycosides. From the l-ido derivatives, the orthogonally protected thioglycosides of l-altrose were then prepared by C-4 epimerization. Different approaches to the preparation of the key intermediates, 5,6-unsaturated thioglycoside derivatives, were systematically investigated in the presence of various protecting groups (ether and ester) and using commercially available reagents.
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Affiliation(s)
- Anikó Borbás
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Debrecen
| | - Mihály Herczeg
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Debrecen
- Research Group for Oligosaccharide Chemistry of Hungarian Academy of Sciences, ELKH
| | - Fruzsina Demeter
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Debrecen
| | - Attila Bényei
- Laboratory for X-ray Diffraction, Department of Physical Chemistry, University of Debrecen
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7
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Herczeg M, Demeter F, Lisztes E, Racskó M, Tóth BI, Timári I, Bereczky Z, Kövér KE, Borbás A. Synthesis of a Heparinoid Pentasaccharide Containing l-Guluronic Acid Instead of l-Iduronic Acid with Preserved Anticoagulant Activity. J Org Chem 2022; 87:15830-15836. [PMID: 36411253 DOI: 10.1021/acs.joc.2c01928] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
l-Iduronic acid is a key constituent of heparin and heparan sulfate polysaccharides due to its unique conformational plasticity, which facilitates the binding of polysaccharides to proteins. At the same time, this is the synthetically most challenging unit of heparinoid oligosaccharides; therefore, there is a high demand for its replacement with a more easily accessible sugar unit. In the case of idraparinux, an excellent anticoagulant heparinoid pentasaccharide, we demonstrated that l-iduronic acid can be replaced by an easier-to-produce l-sugar while maintaining its essential biological activity. From the inexpensive d-mannose, through a highly functionalized phenylthio mannoside, the l-gulose donor was prepared by C-5 epimerization in 10 steps with excellent yield. This unit was incorporated into the pentasaccharide by α-selective glycosylation and oxidized to l-guluronic acid. The complete synthesis required only 36 steps, with 21 steps for the longest linear route. The guluronate containing pentasaccharide inhibited coagulation factor Xa by 50% relative to the parent compound, representing an excellent anticoagulant activity. To the best of our knowledge, this is the first biologically active heparinoid anticoagulant which contains a different sugar unit instead of l-iduronic acid.
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Affiliation(s)
- Mihály Herczeg
- Department of Pharmaceutical Chemistry, University of Debrecen, Egyetem tér 1, Debrecen H-4032, Hungary.,Research Group for Oligosaccharide Chemistry of Hungarian Academy of Sciences, ELKH Egyetem tér 1, Debrecen H-4032, Hungary
| | - Fruzsina Demeter
- Department of Pharmaceutical Chemistry, University of Debrecen, Egyetem tér 1, Debrecen H-4032, Hungary
| | - Erika Lisztes
- Department of Physiology, Faculty of Medicine, University of Debrecen, P.O. Box 22, Debrecen H-4012, Hungary
| | - Márk Racskó
- Department of Physiology, Faculty of Medicine, University of Debrecen, P.O. Box 22, Debrecen H-4012, Hungary.,Doctoral School of Molecular Medicine, Faculty of Medicine, University of Debrecen, Debrecen H-4032, Hungary
| | - Balázs István Tóth
- Department of Physiology, Faculty of Medicine, University of Debrecen, P.O. Box 22, Debrecen H-4012, Hungary
| | - István Timári
- Department of Organic Chemistry, Faculty of Science and Technology, University of Debrecen, Egyetem tér 1, Debrecen H-4032, Hungary
| | - Zsuzsanna Bereczky
- Division of Clinical Laboratory Sciences, Department of Laboratory Medicine, Faculty of Medicine, University of Debrecen, Nagyerdei krt. 98, Debrecen H-4032, Hungary
| | - Katalin E Kövér
- Department of Inorganic and Analytical Chemistry, Faculty of Science and Technology, University of Debrecen, Egyetem tér 1, Debrecen H-4032, Hungary.,MTA-DE Molecular Recognition and Interaction Research Group, University of Debrecen, Egyetem tér 1, Debrecen H-4032, Hungary
| | - Anikó Borbás
- Department of Pharmaceutical Chemistry, University of Debrecen, Egyetem tér 1, Debrecen H-4032, Hungary
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8
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Debreczeni N, Bege M, Herczeg M, Bereczki I, Batta G, Herczegh P, Borbás A. Tightly linked morpholino-nucleoside chimeras: new, compact cationic oligonucleotide analogues. Org Biomol Chem 2021; 19:8711-8721. [PMID: 34586122 DOI: 10.1039/d1ob01174j] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The polyanionic phosphodiester backbone of nucleic acids contributes to high nuclease sensitivity and low cellular uptake and is therefore a major obstacle to the biological application of native oligonucleotides. Backbone modifications, particularly charge alterations is a proven strategy to provide artificial oligonucleotides with improved properties. Here, we describe the synthesis of a new type of oligonucleotide analogues consisting of a morpholino and a ribo- or deoxyribonucleoside in which the 5'-amino group of the nucleoside unit provides the nitrogen of the morpholine ring. The synthetic protocol is compatible with trityl and dimethoxytrityl protecting groups and azido functionality, and was extended to the synthesis of higher oligomers. The chimeras are positively charged in aqueous medium, due to the N-alkylated tertiary amine structure of the morpholino unit.
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Affiliation(s)
- Nóra Debreczeni
- Department of Pharmaceutical Chemistry, University of Debrecen, H-4032, Debrecen, Egyetem tér 1, Hungary. .,Doctoral School of Chemistry, University of Debrecen, Hungary.,Institute of Healthcare Industry, University of Debrecen, H-4032, Debrecen, Nagyerdei körút 98, Hungary
| | - Miklós Bege
- Department of Pharmaceutical Chemistry, University of Debrecen, H-4032, Debrecen, Egyetem tér 1, Hungary. .,Institute of Healthcare Industry, University of Debrecen, H-4032, Debrecen, Nagyerdei körút 98, Hungary.,MTA-DE Molecular Recognition and Interaction Research Group, UD, Egyetem tér 1, H-4032 Debrecen, Hungary
| | - Mihály Herczeg
- Department of Pharmaceutical Chemistry, University of Debrecen, H-4032, Debrecen, Egyetem tér 1, Hungary. .,Research Group for Oligosaccharide Chemistry of HAS, UD, H-4032, Debrecen, Egyetem tér 1, Hungary
| | - Ilona Bereczki
- Department of Pharmaceutical Chemistry, University of Debrecen, H-4032, Debrecen, Egyetem tér 1, Hungary. .,National Virology Laboratory, Szentágothai Research Centre, Ifjúság útja 20, H-7624 Pécs, Hungary
| | - Gyula Batta
- Department of Organic Chemistry, University of Debrecen, H-4032, Debrecen, Hungary
| | - Pál Herczegh
- Department of Pharmaceutical Chemistry, University of Debrecen, H-4032, Debrecen, Egyetem tér 1, Hungary.
| | - Anikó Borbás
- Department of Pharmaceutical Chemistry, University of Debrecen, H-4032, Debrecen, Egyetem tér 1, Hungary. .,National Virology Laboratory, Szentágothai Research Centre, Ifjúság útja 20, H-7624 Pécs, Hungary
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9
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Mezö E, Herczeg M, Demeter F, Bereczki I, Csávás M, Borbás A. Systematic Study of Regioselective Reductive Ring-Opening Reactions of 4,6- O-Halobenzylidene Acetals of Glucopyranosides. J Org Chem 2021; 86:12973-12987. [PMID: 34478619 DOI: 10.1021/acs.joc.1c01667] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Reductive openings of cyclic acetals are widely used in modern synthetic organic chemistry for the regioselective introduction of protecting groups. A systematic study was performed on the applicability and efficacy of various hydride donor and protic or Lewis acid reagent combinations in the reductive ring opening of glucosidic 4,6-halobenzylidene acetals bearing an ortho-, meta-, and para-chloro- or -bromo substituent on the benzene ring. Most of the reagent combinations tested cleaved the 4,6-O-halobenzylidene acetal rings at O4 or O6 efficiently and with the expected regioselectivity. The LiAlH4-AlCl3 and the BH3·THF-TMSOTf combinations produced the 4-O-halobenzyl ether/6-OH products with complete regioselectivity and high yields. The use of Me3N·BH3-AlCl3 reagent system in toluene was also effective in cleaving the acetal ring at O6 but was accompanied by Al-chelation-assisted debenzylation side reactions. The NaCNBH3-HCl and the Et3SiH-BF3·Et2O combinations were highly effective in yielding the 6-halobenzyl ether/4-OH derivatives. Et3SiH, in combination with TfOH, produced the 6-O-ether/4-OH products in rapid reactions but also triggered silylation and reductive halobenzylation as secondary transformations. Reductive opening of the 1,3-dioxane ring of pyranosidic 4,6-O-halobenzylidene acetals by the proper reagent combination was found to be an efficient method for the regioselective introduction of versatile halobenzyl protecting groups onto the pyranose ring.
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Affiliation(s)
- Erika Mezö
- Department of Pharmaceutical Chemistry, University of Debrecen, Egyetem tér 1, H-4032 Debrecen, Hungary
| | - Mihály Herczeg
- Department of Pharmaceutical Chemistry, University of Debrecen, Egyetem tér 1, H-4032 Debrecen, Hungary.,Research Group for Oligosaccharide Chemistry of Hungarian Academy of Sciences, Egyetem tér 1, H-4032 Debrecen, Hungary
| | - Fruzsina Demeter
- Department of Pharmaceutical Chemistry, University of Debrecen, Egyetem tér 1, H-4032 Debrecen, Hungary
| | - Ilona Bereczki
- Department of Pharmaceutical Chemistry, University of Debrecen, Egyetem tér 1, H-4032 Debrecen, Hungary
| | - Magdolna Csávás
- MTA-DE Molecular Recognition and Interaction Research Group, University of Debrecen, Egyetem tér 1, H-4032 Debrecen, Hungary
| | - Anikó Borbás
- Department of Pharmaceutical Chemistry, University of Debrecen, Egyetem tér 1, H-4032 Debrecen, Hungary
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10
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Balogh G, Gyöngyösi T, Timári I, Herczeg M, Borbás A, Sadiq SK, Fehér K, Kövér KE. Conformational Analysis of Heparin-Analogue Pentasaccharides by Nuclear Magnetic Resonance Spectroscopy and Molecular Dynamics Simulations. J Chem Inf Model 2021; 61:2926-2936. [PMID: 34029080 DOI: 10.1021/acs.jcim.1c00200] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Elucidation and improvement of the blood coagulant properties of heparin are the focus of intense research. In this study, we performed conformational analysis using nuclear magnetic resonance (NMR) spectroscopy and molecular dynamics (MD) simulations on the heparin pentasaccharide analogue idraparinux, its disulfonatomethyl analogue, which features a slightly improved blood coagulation property, and a trisulfonatomethyl analogue, in which the activity has been totally abolished. As the ring conformation of the G subunit has been suggested as a major determinant of the biological properties, we analyzed the sugar ring conformations and dynamics of the interglycosidic linkages. We found that the conformation of the G ring is dominated by the 2SO skewed boat next to the 1C4 chair in all three derivatives. Both the thermodynamics and the kinetics of the conformational states were found to be highly similar in the three derivatives. Molecular kinetic analysis showed that the 2SO skewed boat state of the G ring is equally favorable in the three analogues, resulting in similar 2SO populations. Also, the transition kinetics from the 1C4 chair to the 2SO skewed boat was found to be comparable in the derivatives, which indicates a similar energy barrier between the two states of the G subunit. We also identified a slower conformational transition between the dominant 4C1 chair and the boat conformations on the E subunit. Both G and E ring flips are also accompanied by changes along the interglycosidic linkages, which take place highly synchronously with the ring flips. These findings indicate that conformational plasticity of the G ring and the dominance of the 2SO skewed boat populations do not necessarily warrant the biological activity of the derivatives and hence the impact of other factors also needs to be considered.
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Affiliation(s)
- Gábor Balogh
- Division of Clinical Laboratory Science, Department of Laboratory Medicine, Faculty of Medicine, University of Debrecen, Nagyerdei krt. 98, H-4032 Debrecen, Hungary
| | - Tamás Gyöngyösi
- Department of Inorganic and Analytical Chemistry, University of Debrecen, Egyetem tér 1, H-4032 Debrecen, Hungary.,MTA-DE Molecular Recognition and Interaction Research Group, University of Debrecen, Egyetem tér 1, H-4032 Debrecen, Hungary
| | - István Timári
- Department of Inorganic and Analytical Chemistry, University of Debrecen, Egyetem tér 1, H-4032 Debrecen, Hungary
| | - Mihály Herczeg
- Department of Pharmaceutical Chemistry, University of Debrecen, Egyetem tér 1, H-4032 Debrecen, Hungary.,Research Group for Oligosaccharide Chemistry of Hungarian Academy of Sciences, University of Debrecen, Egyetem tér 1, H-4032 Debrecen, Hungary
| | - Anikó Borbás
- Department of Pharmaceutical Chemistry, University of Debrecen, Egyetem tér 1, H-4032 Debrecen, Hungary
| | - S Kashif Sadiq
- Heidelberg Institute for Theoretical Studies, Schloss-Wolfsbrunnenweg 35, 69118 Heidelberg, Germany.,European Molecular Biology Laboratory, Meyerhofstrasse 1, 69117 Heidelberg, Germany
| | - Krisztina Fehér
- MTA-DE Molecular Recognition and Interaction Research Group, University of Debrecen, Egyetem tér 1, H-4032 Debrecen, Hungary
| | - Katalin E Kövér
- Department of Inorganic and Analytical Chemistry, University of Debrecen, Egyetem tér 1, H-4032 Debrecen, Hungary.,MTA-DE Molecular Recognition and Interaction Research Group, University of Debrecen, Egyetem tér 1, H-4032 Debrecen, Hungary
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11
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Lisztes E, Mező E, Demeter F, Horváth L, Bősze S, István Tóth B, Borbás A, Herczeg M. Synthesis and Cell Growth Inhibitory Activity of Six Non-glycosaminoglycan-Type Heparin-Analogue Trisaccharides. ChemMedChem 2021; 16:1467-1476. [PMID: 33433040 PMCID: PMC8247843 DOI: 10.1002/cmdc.202000917] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Revised: 01/11/2021] [Indexed: 12/27/2022]
Abstract
The design and synthesis of heparin mimetics with high anticancer activity but no anticoagulant activity is an important task in medicinal chemistry. Herein, we present the efficient synthesis of five Glc-GlcA-Glc-sequenced and one Glc-IdoA-Glc-sequenced non-glycosaminoglycan, heparin-related trisaccharides with various sulfation/sulfonylation and methylation patterns. The cell growth inhibitory effects of the compounds were tested against four cancerous human cell lines and two non-cancerous cell lines. Two d-glucuronate-containing tetra-O-sulfated, partially methylated trisaccharides displayed remarkable and selective inhibitory effects on the growth of ovary carcinoma (A2780) and melanoma (WM35) cells. Methyl substituents on the glucuronide unit proved to be detrimental, whereas acetyl substituents were beneficial to the cytostatic activity of the sulfated derivatives.
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Affiliation(s)
- Erika Lisztes
- Department of PhysiologyUniversity of Debrecen PO Box 224012DebrecenHungary
| | - Erika Mező
- Department of Pharmaceutical ChemistryUniversity of DebrecenEgyetem tér 14032DebrecenHungary
| | - Fruzsina Demeter
- Department of Pharmaceutical ChemistryUniversity of DebrecenEgyetem tér 14032DebrecenHungary
- Doctoral School of ChemistryUniversity of DebrecenEgyetem tér 14032DebrecenHungary
- MTA-DE Molecular Recognition and Interaction Research Group, ELKHUniversity of DebrecenEgyetem tér 14032DebrecenHungary
| | - Lilla Horváth
- MTA-ELTE Research Group of Peptide ChemistryEötvös Loránd UniversityPázmány Péter sétány 1/a1117BudapestHungary
| | - Szilvia Bősze
- MTA-ELTE Research Group of Peptide ChemistryEötvös Loránd UniversityPázmány Péter sétány 1/a1117BudapestHungary
| | - Balázs István Tóth
- Department of PhysiologyUniversity of Debrecen PO Box 224012DebrecenHungary
| | - Anikó Borbás
- Department of Pharmaceutical ChemistryUniversity of DebrecenEgyetem tér 14032DebrecenHungary
| | - Mihály Herczeg
- Department of Pharmaceutical ChemistryUniversity of DebrecenEgyetem tér 14032DebrecenHungary
- MTA-DE Research Group for Oligosaccharide Chemistry, ELKHEgyetem tér 14032DebrecenHungary
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12
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Demeter F, Dah-Tsyr Chang M, Lee YC, Fu TK, Herczeg M, Borbás A. Synthesis of α-1,2- and α-1,3-linked di-rhamnolipids for biological studies. Carbohydr Res 2020; 496:108102. [PMID: 32810625 DOI: 10.1016/j.carres.2020.108102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Revised: 07/10/2020] [Accepted: 07/13/2020] [Indexed: 10/23/2022]
Abstract
For a detailed examination of the interaction of rhamnose containing derivatives with recombinant horseshoe crab plasma lectin (rHPL), two di-rhamno-di-lipids (an α-1,2- and an α-1,3-linked) were synthesized via a new simple method. The N-iodosuccinimide/triflic acid mediated glycosylation of the methyl (R)-3-hydroxydecanoate with phenyl-1-thio-rhamnobioside donors afforded the mono-lipid disaccharides. Removal of the methyl ester group followed by esterification of the mono-lipids with a second (R)-3-hydroxydecanoate unit resulted in fully protected di-lipid derivatives, transformation of which into the target compounds was accomplished in two steps. This method allows the synthesis of both regioisomers in only 6 steps starting from the corresponding free disaccharides. Both synthetic di-rhamnolipids were biologically active for lectin binding differential binding preference between two isomeric di-rhamno-di-lipids. The rHPL lectin favours the α-1,3-linked di-rhamno-di-lipids over its α-1,2-linked regioisomer.
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Affiliation(s)
- Fruzsina Demeter
- Department of Pharmaceutical Chemistry, University of Debrecen, H-4032, Debrecen, Egyetem tér 1, Hungary; MTA-DE Molecular Recognition and Interaction Research Group, UD, Egyetem tér 1, H-4032, Debrecen, Hungary; Doctoral School of Chemistry, University of Debrecen, Debrecen, Hungary
| | - Margaret Dah-Tsyr Chang
- Institute of Molecular and Cellular Biology, National Tsing Hua University, Hsinchu, Taiwan, ROC
| | - Yuan-Chuan Lee
- Institute of Molecular and Cellular Biology, National Tsing Hua University, Hsinchu, Taiwan, ROC; Department of Biology, Johns Hopkins University, Baltimore, Maryland, MD, 21218, USA
| | - Tse-Kai Fu
- Institute of Molecular and Cellular Biology, National Tsing Hua University, Hsinchu, Taiwan, ROC
| | - Mihály Herczeg
- Department of Pharmaceutical Chemistry, University of Debrecen, H-4032, Debrecen, Egyetem tér 1, Hungary; Research Group for Oligosaccharide Chemistry of HAS, UD, H-4032, Debrecen, Egyetem tér 1, Hungary.
| | - Anikó Borbás
- Department of Pharmaceutical Chemistry, University of Debrecen, H-4032, Debrecen, Egyetem tér 1, Hungary.
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13
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Kelemen V, Csávás M, Hotzi J, Herczeg M, Poonam, Rathi B, Herczegh P, Jain N, Borbás A. Photoinitiated Thiol-Ene Reactions of Various 2,3-Unsaturated O-, C- S- and N-Glycosides - Scope and Limitations Study. Chem Asian J 2020; 15:876-891. [PMID: 32003941 PMCID: PMC7154673 DOI: 10.1002/asia.201901560] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Revised: 01/08/2020] [Indexed: 12/13/2022]
Abstract
The photoinitiated thiol-ene addition reaction is a highly stereo- and regioselective, and environmentally friendly reaction proceeding under mild conditions, hence it is ideally suited for the synthesis of carbohydrate mimetics. A comprehensive study on UV-light-induced reactions of 2,3-unsaturated O-, C-, S- and N-glycosides with various thiols was performed. The effect of experimental parameters and structural variations of the alkenes and thiols on the efficacy and regio- and stereoselectivity of the reactions was systematically studied and optimized. The type of anomeric heteroatom was found to profoundly affect the reactivity of 2,3-unsaturated sugars in the thiol-ene couplings. Hydrothiolation of 2,3-dideoxy O-glycosyl enosides efficiently produced the axially C2-S-substituted addition products with high to complete regioselectivity. Moderate efficacy and varying regio- and stereoselectivity were observed with 2,3-unsaturated N-glycosides and no addition occurred onto the endocyclic double bond of C-glycosides. Upon hydrothiolation of 2,3-unsaturated S-glycosides, the addition of thiyl radicals was followed by elimination of the thiyl aglycone resulting in 3-S-substituted glycals.
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Affiliation(s)
- Viktor Kelemen
- Department of Pharmaceutical ChemistryUniversity of Debrecen4032DebrecenEgyetem tér 1Hungary
- Doctoral School of Pharmaceutical SciencesUniversity of Debrecen4032DebrecenEgyetem tér 1Hungary
| | - Magdolna Csávás
- Department of Pharmaceutical ChemistryUniversity of Debrecen4032DebrecenEgyetem tér 1Hungary
| | - Judit Hotzi
- Department of Pharmaceutical ChemistryUniversity of Debrecen4032DebrecenEgyetem tér 1Hungary
| | - Mihály Herczeg
- Department of Pharmaceutical ChemistryUniversity of Debrecen4032DebrecenEgyetem tér 1Hungary
- Department of Pharmaceutical Chemistry Faculty of Pharmacy Research Group for Oligosaccharide Chemistry of the Hungarian Academy of SciencesUniversity of DebrecenH-4032DebrecenHungary
| | - Poonam
- Department of Chemistry Miranda HouseUniversity of DelhiIndia
| | - Brijesh Rathi
- Laboratory for Translational Chemistry and Drug Discovery Department of Chemistry Hansraj CollegeUniversity of DelhiIndia
| | - Pál Herczegh
- Department of Pharmaceutical ChemistryUniversity of Debrecen4032DebrecenEgyetem tér 1Hungary
| | - Nidhi Jain
- Department of ChemistryIndian Institute of TechnologyNew Delhi110016India
| | - Anikó Borbás
- Department of Pharmaceutical ChemistryUniversity of Debrecen4032DebrecenEgyetem tér 1Hungary
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14
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Demeter F, Chang MDT, Lee YC, Borbás A, Herczeg M. An Efficient Synthesis of the Pentasaccharide Repeating Unit of Pseudomonas aeruginosa Psl Exopolysaccharide. Synlett 2019. [DOI: 10.1055/s-0039-1690747] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Pseudomonas aeruginosa is a biofilm-forming Gram-negative bacterium and a leading cause of life-threatening nosocomial infections. The polysaccharide synthesis locus (Psl) exopolysaccharide of P. aeruginosa is a key constituent of the defending bacterial biofilm layer and is a promising therapeutic target for resistant species. The Psl exopolysaccharide is built up from repeating pentasaccharide units which contain one α- and two β-mannosidic linkages, and one l-rhamnose and one d-glucose moieties. The preparation of this pentasaccharide was first described by Boons et al. in a 34-step synthesis. Based on their work, we have developed a new and effective pathway for the synthesis of the repeating pentasaccharide unit of the Psl exopolysaccharide. We have succeeded in simplifying the synthesis of the l-rhamnose and the α-selective d-mannose building blocks. Furthermore, taking advantage of a chemoselective pre-activation-based β-mannosylation, we directly prepare a thioglycoside disaccharide donor and use it in the next coupling reaction without further transformation. The pentasaccharide, in the form of a p-methoxyphenyl glycoside, is prepared in 26 steps, which is suitable for biological testing.
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Affiliation(s)
- Fruzsina Demeter
- Department of Pharmaceutical Chemistry, University of Debrecen
- MTA-DE Molecular Recognition and Interaction Research Group, University of Debrecen
- Doctoral School of Chemistry, University of Debrecen
| | | | - Yuan-Chuan Lee
- Institute of Molecular and Cellular Biology, National Tsing Hua University
- Department of Biology, Johns Hopkins University
| | - Anikó Borbás
- Department of Pharmaceutical Chemistry, University of Debrecen
| | - Mihály Herczeg
- Department of Pharmaceutical Chemistry, University of Debrecen
- Research Group for Oligosaccharide Chemistry of HAS, University of Debrecen
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15
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Malinovská L, Thai Le S, Herczeg M, Vašková M, Houser J, Fujdiarová E, Komárek J, Hodek P, Borbás A, Wimmerová M, Csávás M. Synthesis of β-d-galactopyranoside-Presenting Glycoclusters, Investigation of Their Interactions with Pseudomonas aeruginosa Lectin A (PA-IL) and Evaluation of Their Anti-Adhesion Potential. Biomolecules 2019; 9:E686. [PMID: 31683947 PMCID: PMC6920806 DOI: 10.3390/biom9110686] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2019] [Revised: 10/30/2019] [Accepted: 10/31/2019] [Indexed: 12/19/2022] Open
Abstract
Pseudomonas aeruginosa is an opportunistic human pathogen associated with cystic fibrosis. This bacterium produces, among other virulence factors, a soluble d-galactose-specific lectin PA-IL (LecA). PA-IL plays an important role in the adhesion to the host cells and is also cytotoxic. Therefore, this protein is an interesting therapeutic target, suitable for inhibition by carbohydrate-based compounds. In the current study, β-d-galactopyranoside-containing tri- and tetravalent glycoclusters were synthesized. Methyl gallate and pentaerythritol equipped with propargyl groups were chosen as multivalent scaffolds and the galactoclusters were built from the above-mentioned cores by coupling ethylene or tetraethylene glycol-bridges and peracetylated propargyl β-d-galactosides using 1,3-dipolar azide-alkyne cycloaddition. The interaction between galactoside derivatives and PA-IL was investigated by several biophysical methods, including hemagglutination inhibition assay, isothermal titration calorimetry, analytical ultracentrifugation, and surface plasmon resonance. Their ability to inhibit the adhesion of P. aeruginosa to bronchial cells was determined by ex vivo assay. The newly synthesized multivalent galactoclusters proved to be significantly better ligands than simple d-galactose for lectin PA-IL and as a result, two representatives of the dendrimers were able to decrease adhesion of P. aeruginosa to bronchial cells to approximately 32% and 42%, respectively. The results may provide an opportunity to develop anti-adhesion therapy for the treatment of P. aeruginosa infection.
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Affiliation(s)
- Lenka Malinovská
- Central European Institute of Technology, Masaryk University, Kamenice 5, 625 00 Brno, Czech Republic.
- National Centre for Biomolecular Research, Faculty of Science, Masaryk University, Kotlářská 2, 611 37 Brno, Czech Republic.
| | - Son Thai Le
- Department of Pharmaceutical Chemistry, University of Debrecen, Egyetem tér 1, H-4032 Debrecen, Hungary.
- Doctoral School of Pharmaceutical Sciences, University of Debrecen, Egyetem tér 1, H-4032 Debrecen, Hungary.
| | - Mihály Herczeg
- Department of Pharmaceutical Chemistry, University of Debrecen, Egyetem tér 1, H-4032 Debrecen, Hungary.
- Research Group for Oligosaccharide Chemistry of Hungarian Academy of Sciences, Egyetem tér 1, H-4032 Debrecen, Hungary.
| | - Michaela Vašková
- Department of Biochemistry, Faculty of Science, Charles University, Albertov 2030, 128 40 Prague 2, Czech Republic.
| | - Josef Houser
- Central European Institute of Technology, Masaryk University, Kamenice 5, 625 00 Brno, Czech Republic.
- National Centre for Biomolecular Research, Faculty of Science, Masaryk University, Kotlářská 2, 611 37 Brno, Czech Republic.
| | - Eva Fujdiarová
- National Centre for Biomolecular Research, Faculty of Science, Masaryk University, Kotlářská 2, 611 37 Brno, Czech Republic.
| | - Jan Komárek
- Central European Institute of Technology, Masaryk University, Kamenice 5, 625 00 Brno, Czech Republic.
- National Centre for Biomolecular Research, Faculty of Science, Masaryk University, Kotlářská 2, 611 37 Brno, Czech Republic.
| | - Petr Hodek
- Department of Biochemistry, Faculty of Science, Charles University, Albertov 2030, 128 40 Prague 2, Czech Republic.
| | - Anikó Borbás
- Department of Pharmaceutical Chemistry, University of Debrecen, Egyetem tér 1, H-4032 Debrecen, Hungary.
| | - Michaela Wimmerová
- Central European Institute of Technology, Masaryk University, Kamenice 5, 625 00 Brno, Czech Republic.
- National Centre for Biomolecular Research, Faculty of Science, Masaryk University, Kotlářská 2, 611 37 Brno, Czech Republic.
- Department of Biochemistry, Faculty of Science, Masaryk University, Kotlářská 2, 611 37 Brno, Czech Republic.
| | - Magdolna Csávás
- Department of Pharmaceutical Chemistry, University of Debrecen, Egyetem tér 1, H-4032 Debrecen, Hungary.
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16
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Demeter F, Balogh T, Fu TK, Chang MDT, Lee YC, Borbás A, Herczeg M. Preparation of α-l-Rhamnobiosides by Open and Conventional Glycosylations for Studies of the rHPL Lectin. Synlett 2019. [DOI: 10.1055/s-0039-1690710] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
To study the effect of oligosaccharides on biological systems (e.g., carbohydrate–lectin interactions), chemical synthesis of the desired carbohydrate derivatives is highly desirable, but it is usually a very complicated task. Most of the stereo- and regioselective glycosylation reactions are carried out by using protected acceptors and donors. At the same time, open glycosylation (use of an unprotected acceptor) may shorten the reaction pathway, if sufficient selectivity can be achieved between the acceptor hydroxyl groups. Toward synthesis of higher oligomers and multivalent derivatives, which are often useful for lectin binding studies, open glycosylation reactions of propargyl and phenylthio rhamnosides were investigated as a rapid route to the α-(1,3)-linked rhamnobioside binding motif. The efficacy of open glycosylations proved to be highly dependent on both the type of donor and the solvent applied. Using a trichloroacetimidate donor in 1,4-dioxane, the open glycosylation reactions proceeded with high regioselectivity and in good yields. Conventional glycosylations, on the other hand, afforded the α-(1,2)- and α-(1,3)-linked rhamnobioside derivatives with slightly higher yields via three-step longer syntheses.
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Affiliation(s)
- Fruzsina Demeter
- Department of Pharmaceutical Chemistry, University of Debrecen
- MTA-DE Molecular Recognition and Interaction Research Group, University of Debrecen
- Doctoral School of Chemistry, University of Debrecen
| | - Tímea Balogh
- Department of Pharmaceutical Chemistry, University of Debrecen
| | - Tse-Kai Fu
- Institute of Molecular and Cellular Biology, National Tsing Hua University
| | - Margaret Dah-Tsyr Chang
- Institute of Molecular and Cellular Biology, National Tsing Hua University
- Molecular Infectious Disease Research Center, Chang Gung Memorial Hospital, Chang Gung University College of Medicine
| | - Yuan-Chuan Lee
- Institute of Molecular and Cellular Biology, National Tsing Hua University
- Department of Biology, Johns Hopkins University
| | - Anikó Borbás
- Department of Pharmaceutical Chemistry, University of Debrecen
| | - Mihály Herczeg
- Department of Pharmaceutical Chemistry, University of Debrecen
- Research Group for Oligosaccharide Chemistry of HAS, University of Debrecen
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17
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Balogh G, Gyöngyösi T, Timári I, Herczeg M, Borbás A, Fehér K, Kövér KE. Comparison of Carbohydrate Force Fields Using Gaussian Accelerated Molecular Dynamics Simulations and Development of Force Field Parameters for Heparin-Analogue Pentasaccharides. J Chem Inf Model 2019; 59:4855-4867. [DOI: 10.1021/acs.jcim.9b00666] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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18
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Szőke K, Czompa A, Lekli I, Szabados-Fürjesi P, Herczeg M, Csávás M, Borbás A, Herczegh P, Tósaki Á. Dataset on structure, stability and myocardial effects of a new hybrid aspirin containing nitrogen monoxide-releasing molsidomine moiety. Data Brief 2019; 25:104146. [PMID: 31297426 PMCID: PMC6598840 DOI: 10.1016/j.dib.2019.104146] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Revised: 05/24/2019] [Accepted: 06/04/2019] [Indexed: 11/26/2022] Open
Abstract
Herein 1H and 13C NMR spectra of ERJ-500, a new hybrid aspirin derivative, covalently conjugated to nitrogen monoxide donor linsidomine are presented as well as NMR spectra of its synthetic intermediate compounds. HPLC-MS measurements data are also included, demonstrating the stability of the linsidomine-aspirin hybrid in oxidation reactions. This data article also concerns miscellaneous myocardial parameters of isolated rat hearts as a complementation of the tables shown in the paper entitled “A new, vasoactive hybrid aspirin containing nitrogen monoxide-releasing molsidomine moiety” Szoke et al., 2019. Column tables represent data of aorta flow, aortic pressure, derivated aortic pressure and cardiac output.
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Affiliation(s)
- Kitti Szőke
- Department of Pharmacology, Faculty of Pharmacy, University of Debrecen, Debrecen, Hungary
| | - Attila Czompa
- Department of Pharmacology, Faculty of Pharmacy, University of Debrecen, Debrecen, Hungary
| | - István Lekli
- Department of Pharmacology, Faculty of Pharmacy, University of Debrecen, Debrecen, Hungary
| | - Péter Szabados-Fürjesi
- Department of Pharmacology, Faculty of Pharmacy, University of Debrecen, Debrecen, Hungary.,Department of Bioanalytical Chemistry, Faculty of Pharmacy, University of Debrecen, Debrecen, Hungary
| | - Mihály Herczeg
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Debrecen, Debrecen, Hungary
| | - Magdolna Csávás
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Debrecen, Debrecen, Hungary
| | - Anikó Borbás
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Debrecen, Debrecen, Hungary
| | - Pál Herczegh
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Debrecen, Debrecen, Hungary
| | - Árpád Tósaki
- Department of Pharmacology, Faculty of Pharmacy, University of Debrecen, Debrecen, Hungary
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19
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Fu TK, Ng SK, Chen YE, Lee YC, Demeter F, Herczeg M, Borbás A, Chiu CH, Lan CY, Chen CL, Chang MDT. Rhamnose Binding Protein as an Anti-Bacterial Agent-Targeting Biofilm of Pseudomonas aeruginosa. Mar Drugs 2019; 17:md17060355. [PMID: 31207891 PMCID: PMC6628293 DOI: 10.3390/md17060355] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2019] [Revised: 06/11/2019] [Accepted: 06/12/2019] [Indexed: 01/14/2023] Open
Abstract
More than 80% of infectious bacteria form biofilm, which is a bacterial cell community surrounded by secreted polysaccharides, proteins and glycolipids. Such bacterial superstructure increases resistance to antimicrobials and host defenses. Thus, to control these biofilm-forming pathogenic bacteria requires antimicrobial agents with novel mechanisms or properties. Pseudomonas aeruginosa, a Gram-negative opportunistic nosocomial pathogen, is a model strain to study biofilm development and correlation between biofilm formation and infection. In this study, a recombinant hemolymph plasma lectin (rHPLOE) cloned from Taiwanese Tachypleus tridentatus was expressed in an Escherichia coli system. This rHPLOE was shown to have the following properties: (1) Binding to P. aeruginosa PA14 biofilm through a unique molecular interaction with rhamnose-containing moieties on bacteria, leading to reduction of extracellular di-rhamnolipid (a biofilm regulator); (2) decreasing downstream quorum sensing factors, and inhibiting biofilm formation; (3) dispersing the mature biofilm of P. aeruginosa PA14 to improve the efficacies of antibiotics; (4) reducing P. aeruginosa PA14 cytotoxicity to human lung epithelial cells in vitro and (5) inhibiting P. aeruginosa PA14 infection of zebrafish embryos in vivo. Taken together, rHPLOE serves as an anti-biofilm agent with a novel mechanism of recognizing rhamnose moieties in lipopolysaccharides, di-rhamnolipid and structural polysaccharides (Psl) in biofilms. Thus rHPLOE links glycan-recognition to novel anti-biofilm strategies against pathogenic bacteria.
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Affiliation(s)
- Tse-Kai Fu
- Institute of Molecular and Cellular Biology, National Tsing Hua University, Hsinchu 30013, Taiwan.
- Simpson Biotech Co., Ltd., Taoyuan 333, Taiwan.
| | - Sim-Kun Ng
- Institute of Molecular and Cellular Biology, National Tsing Hua University, Hsinchu 30013, Taiwan.
| | - Yi-En Chen
- Institute of Molecular and Cellular Biology, National Tsing Hua University, Hsinchu 30013, Taiwan.
| | - Yuan-Chuan Lee
- Institute of Molecular and Cellular Biology, National Tsing Hua University, Hsinchu 30013, Taiwan.
- Department of Biology, Johns Hopkins University, Baltimore, ML 21218, USA.
| | - Fruzsina Demeter
- Department of Pharmaceutical Chemistry, University of Debrecen, Debrecen 4032, Hungary (F.D.).
| | - Mihály Herczeg
- Department of Pharmaceutical Chemistry, University of Debrecen, Debrecen 4032, Hungary (F.D.).
| | - Anikó Borbás
- Department of Pharmaceutical Chemistry, University of Debrecen, Debrecen 4032, Hungary (F.D.).
| | - Cheng-Hsun Chiu
- Department of Life Science, National Tsing Hua University, Hsinchu 30013, Taiwan.
| | - Chung-Yu Lan
- Institute of Molecular and Cellular Biology, National Tsing Hua University, Hsinchu 30013, Taiwan.
- Department of Life Science, National Tsing Hua University, Hsinchu 30013, Taiwan.
| | - Chyi-Liang Chen
- Molecular Infectious Disease Research Center, Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Taoyuan 333, Taiwan.
| | - Margaret Dah-Tsyr Chang
- Institute of Molecular and Cellular Biology, National Tsing Hua University, Hsinchu 30013, Taiwan.
- Department of Life Science, National Tsing Hua University, Hsinchu 30013, Taiwan.
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20
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Kicsák M, Mándi A, Varga S, Herczeg M, Batta G, Bényei A, Borbás A, Herczegh P. Tricyclanos: conformationally constrained nucleoside analogues with a new heterotricycle obtained from a d-ribofuranose unit. Org Biomol Chem 2019; 16:393-401. [PMID: 29090729 DOI: 10.1039/c7ob02296d] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
A novel type of nucleoside analogue in which the sugar part is replaced by a new tricycle, 3,7,10-trioxa-11-azatricyclo[5.3.1.05,11]undecane has been prepared by substrate-controlled asymmetric synthesis. 1,5-Dialdehydes obtained from properly protected or unprotected uridine, ribothymidine, cytidine, inosine, adenosine and guanosine by metaperiodate oxidation reacted readily with tris(hydroxymethyl)aminomethane to provide the corresponding tricyclic derivatives with three new stereogenic centers. Through a double cyclisation cascade process the tricyclic compounds were obtained in good to high yields, with very high diastereoselectivity. Formation of one stereoisomer, out of the eight possible, was observed in all cases. The absolute configuration of the new stereotriad-containing tricyclic systems was aided by conventional NMR experiments followed by chemical shift calculations using an X-ray crystal structure as reference that was in good agreement with H-H distances obtained from a new ROESY NMR method. The synthesis was compatible with silyl, trityl and dimethoxytrityl protecting groups. A new reagent mixture containing ZnCl2, Et3SiH and hexafluoroisopropanol was developed for detritylation of the acid-sensitive tricyclano nucleosides.
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Affiliation(s)
- Máté Kicsák
- Department of Pharmaceutical Chemistry, University of Debrecen, Egyetem tér 1, H-4032 Debrecen, Hungary.
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21
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Demeter F, Veres F, Herczeg M, Borbás A. Short Synthesis of Idraparinux by Applying a 2-O
-Methyl-4,6-O
-arylmethylene Thioidoside as a 1,2-trans
-α-Selective Glycosyl Donor. European J Org Chem 2018. [DOI: 10.1002/ejoc.201801349] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Fruzsina Demeter
- Department of Pharmaceutical Chemistry; University of Debrecen; Egyetem tér 1 4032 Debrecen Hungary
| | - Fanni Veres
- Department of Pharmaceutical Chemistry; University of Debrecen; Egyetem tér 1 4032 Debrecen Hungary
| | - Mihály Herczeg
- Department of Pharmaceutical Chemistry; University of Debrecen; Egyetem tér 1 4032 Debrecen Hungary
- Research Group for Oligosaccharide Chemistry; Hungarian Academy of Sciences; Egyetem tér 1 4032 Debrecen Hungary
| | - Anikó Borbás
- Department of Pharmaceutical Chemistry; University of Debrecen; Egyetem tér 1 4032 Debrecen Hungary
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22
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Demeter F, Gyöngyösi T, Bereczky Z, Kövér KE, Herczeg M, Borbás A. Replacement of the L-iduronic acid unit of the anticoagulant pentasaccharide idraparinux by a 6-deoxy-L-talopyranose - Synthesis and conformational analysis. Sci Rep 2018; 8:13736. [PMID: 30213971 PMCID: PMC6137110 DOI: 10.1038/s41598-018-31854-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Accepted: 08/23/2018] [Indexed: 01/05/2023] Open
Abstract
One critical part of the synthesis of heparinoid anticoagulants is the creation of the L-iduronic acid building block featured with unique conformational plasticity which is crucial for the anticoagulant activity. Herein, we studied whether a much more easily synthesizable sugar, the 6-deoxy-L-talose, built in a heparinoid oligosaccharide, could show a similar conformational plasticity, thereby can be a potential substituent of the L-idose. Three pentasaccharides related to the synthetic anticoagulant pentasaccharide idraparinux were prepared, in which the L-iduronate was replaced by a 6-deoxy-L-talopyranoside unit. The talo-configured building block was formed by C4 epimerisation of the commercially available L-rhamnose with high efficacy at both the monosaccharide and the disaccharide level. The detailed conformational analysis of these new derivatives, differing only in their methylation pattern, was performed and the conformationally relevant NMR parameters, such as proton-proton coupling constants and interproton distances were compared to the corresponding ones measured in idraparinux. The lack of anticoagulant activity of these novel heparin analogues could be explained by the biologically not favorable 1C4 chair conformation of their 6-deoxy-L-talopyranoside residues.
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Affiliation(s)
- Fruzsina Demeter
- Department of Pharmaceutical Chemistry, University of Debrecen, Egyetem tér 1, Debrecen, 4032, Hungary
| | - Tamás Gyöngyösi
- Department of Inorganic and Analytical Chemistry, University of Debrecen, P.O. Box 400, Debrecen, 4002, Hungary
| | - Zsuzsanna Bereczky
- Division of Clinical Laboratory Sciences, Department of Laboratory Medicine, Faculty of Medicine, University of Debrecen, 98 Nagyerdei krt., Debrecen, 4032, Hungary
| | - Katalin E Kövér
- Department of Inorganic and Analytical Chemistry, University of Debrecen, P.O. Box 400, Debrecen, 4002, Hungary.
| | - Mihály Herczeg
- Department of Pharmaceutical Chemistry, University of Debrecen, Egyetem tér 1, Debrecen, 4032, Hungary.
| | - Anikó Borbás
- Department of Pharmaceutical Chemistry, University of Debrecen, Egyetem tér 1, Debrecen, 4032, Hungary.
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23
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Herczeg M, Demeter F, Balogh T, Kelemen V, Borbás A. Rapid Synthesis of l
-Idosyl Glycosyl Donors from α-Thioglucosides for the Preparation of Heparin Disaccharides. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800425] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Mihály Herczeg
- Department of Pharmaceutical Chemistry; University of Debrecen; Egyetem tér 1 H-4032 Debrecen Hungary
| | - Fruzsina Demeter
- Department of Pharmaceutical Chemistry; University of Debrecen; Egyetem tér 1 H-4032 Debrecen Hungary
| | - Tímea Balogh
- Department of Pharmaceutical Chemistry; University of Debrecen; Egyetem tér 1 H-4032 Debrecen Hungary
| | - Viktor Kelemen
- Department of Pharmaceutical Chemistry; University of Debrecen; Egyetem tér 1 H-4032 Debrecen Hungary
| | - Anikó Borbás
- Department of Pharmaceutical Chemistry; University of Debrecen; Egyetem tér 1 H-4032 Debrecen Hungary
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24
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Jančaříková G, Herczeg M, Fujdiarová E, Houser J, Kövér KE, Borbás A, Wimmerová M, Csávás M. Synthesis of α-l-Fucopyranoside-Presenting Glycoclusters and Investigation of Their Interaction with Photorhabdus asymbiotica Lectin (PHL). Chemistry 2018; 24:4055-4068. [PMID: 29341313 DOI: 10.1002/chem.201705853] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2017] [Indexed: 12/31/2022]
Abstract
Photorhabdus asymbiotica is a gram-negative bacterium that is not only as effective an insect pathogen as other members of the genus, but it also causes serious diseases in humans. The recently identified lectin PHL from P. asymbiotica verifiably modulates an immune response of humans and insects, which supports the idea that the lectin might play an important role in the host-pathogen interaction. Dimeric PHL contains up to seven l-fucose-specific binding sites per monomer, and in order to target multiple binding sites of PHL, α-l-fucoside-containing di-, tri- and tetravalent glycoclusters were synthesized. Methyl gallate and pentaerythritol were chosen as multivalent scaffolds, and the fucoclusters were built from the above-mentioned cores by coupling with different oligoethylene bridges and propargyl α-l-fucosides using 1,3-dipolar azide-alkyne cycloaddition. The interaction between fucoside derivates and PHL was investigated by several biophysical and biological methods, ITC and SPR measurements, hemagglutination inhibition assay, and an investigation of bacterial aggregation properties were carried out. Moreover, details of the interaction between PHL and propargyl α-l-fucoside as a monomer unit were revealed using X-ray crystallography. Besides this, the interaction with multivalent compounds was studied by NMR techniques. The newly synthesized multivalent fucoclusters proved to be up to several orders of magnitude better ligands than the natural ligand, l-fucose.
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Affiliation(s)
- Gita Jančaříková
- Central European Institute of Technology, Masaryk University, Kamenice 5, 625 00, Brno, Czech Republic.,National Centre for Biomolecular Research, Faculty of Science, Masaryk University, Kotlářská 2, 611 37, Brno, Czech Republic
| | - Mihály Herczeg
- Department of Pharmaceutical Chemistry, University of Debrecen, Egyetem tér 1, H-4032, Debrecen, Hungary
| | - Eva Fujdiarová
- National Centre for Biomolecular Research, Faculty of Science, Masaryk University, Kotlářská 2, 611 37, Brno, Czech Republic
| | - Josef Houser
- Central European Institute of Technology, Masaryk University, Kamenice 5, 625 00, Brno, Czech Republic.,National Centre for Biomolecular Research, Faculty of Science, Masaryk University, Kotlářská 2, 611 37, Brno, Czech Republic
| | - Katalin E Kövér
- Department of Inorganic and Analytical Chemistry, University of Debrecen, Egyetem tér 1, H-4032, Debrecen, Hungary
| | - Anikó Borbás
- Department of Pharmaceutical Chemistry, University of Debrecen, Egyetem tér 1, H-4032, Debrecen, Hungary
| | - Michaela Wimmerová
- Central European Institute of Technology, Masaryk University, Kamenice 5, 625 00, Brno, Czech Republic.,National Centre for Biomolecular Research, Faculty of Science, Masaryk University, Kotlářská 2, 611 37, Brno, Czech Republic.,Department of Biochemistry, Faculty of Science, Masaryk University, Kotlářská 2, 611 37, Brno, Czech Republic
| | - Magdolna Csávás
- Department of Pharmaceutical Chemistry, University of Debrecen, Egyetem tér 1, H-4032, Debrecen, Hungary
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25
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Bege M, Bereczki I, Herczeg M, Kicsák M, Eszenyi D, Herczegh P, Borbás A. A low-temperature, photoinduced thiol–ene click reaction: a mild and efficient method for the synthesis of sugar-modified nucleosides. Org Biomol Chem 2017; 15:9226-9233. [DOI: 10.1039/c7ob02184d] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
While studying the radical mediated hydrothiolation of nucleoside enofuranosides, an unusual temperature effect was observed by the exploitation of which various thio-substituted nucleoside analogues were produced.
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Affiliation(s)
- Miklós Bege
- Department of Pharmaceutical Chemistry
- University of Debrecen
- H-4032 Debrecen Egyetem tér 1
- Hungary
| | - Ilona Bereczki
- Department of Pharmaceutical Chemistry
- University of Debrecen
- H-4032 Debrecen Egyetem tér 1
- Hungary
| | - Mihály Herczeg
- Department of Pharmaceutical Chemistry
- University of Debrecen
- H-4032 Debrecen Egyetem tér 1
- Hungary
| | - Máté Kicsák
- Department of Pharmaceutical Chemistry
- University of Debrecen
- H-4032 Debrecen Egyetem tér 1
- Hungary
| | - Dániel Eszenyi
- Department of Pharmaceutical Chemistry
- University of Debrecen
- H-4032 Debrecen Egyetem tér 1
- Hungary
| | - Pál Herczegh
- Department of Pharmaceutical Chemistry
- University of Debrecen
- H-4032 Debrecen Egyetem tér 1
- Hungary
| | - Anikó Borbás
- Department of Pharmaceutical Chemistry
- University of Debrecen
- H-4032 Debrecen Egyetem tér 1
- Hungary
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26
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Herczeg M, Mező E, Molnár N, Ng SK, Lee YC, Dah-Tsyr Chang M, Borbás A. Inhibitory Effect of Multivalent Rhamnobiosides on Recombinant Horseshoe Crab Plasma Lectin Interactions withPseudomonas aeruginosaPAO1. Chem Asian J 2016; 11:3398-3413. [DOI: 10.1002/asia.201601162] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2016] [Revised: 09/14/2016] [Indexed: 11/06/2022]
Affiliation(s)
- Mihály Herczeg
- Department of Pharmaceutical Chemistry; University of Debrecen; H-4032 Debrecen, Egyetem tér 1 Hungary
| | - Erika Mező
- Department of Pharmaceutical Chemistry; University of Debrecen; H-4032 Debrecen, Egyetem tér 1 Hungary
| | - Nikolett Molnár
- Department of Pharmaceutical Chemistry; University of Debrecen; H-4032 Debrecen, Egyetem tér 1 Hungary
| | - Sim-Kun Ng
- Institute of Molecular and Cellular Biology & Department of Life Science; National Tsing Hua University; Hsinchu Taiwan Republic of China
| | - Yuan-Chuan Lee
- Institute of Molecular and Cellular Biology & Department of Life Science; National Tsing Hua University; Hsinchu Taiwan Republic of China
- Department of Biology; Johns Hopkins University; Baltimore Maryland USA
| | - Margaret Dah-Tsyr Chang
- Institute of Molecular and Cellular Biology & Department of Life Science; National Tsing Hua University; Hsinchu Taiwan Republic of China
| | - Anikó Borbás
- Department of Pharmaceutical Chemistry; University of Debrecen; H-4032 Debrecen, Egyetem tér 1 Hungary
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27
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Kónya K, Kondor Z, Herczeg M, Borbás A, Patonay T. Application of Carbohydrates with Methylene or Vinyl Groups in Heck–Mizoroki Cross-Coupling Reactions with O-Heterocycles. Synlett 2016. [DOI: 10.1055/s-0036-1588591] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
| | - Zoltán Kondor
- Department of Organic Chemistry, University of Debrecen
| | - Mihály Herczeg
- Department of Pharmaceutical Chemistry, University of Debrecen
| | - Anikó Borbás
- Department of Pharmaceutical Chemistry, University of Debrecen
| | - Tamás Patonay
- Department of Organic Chemistry, University of Debrecen
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28
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Eszenyi D, Mándi A, Herczeg M, Bényei A, Komáromi I, Borbás A. Synthesis ofC-2- andC-3-SulfonatomethylO- andS-Glycosides by Horner-Wadsworth-Emmons Olefination. European J Org Chem 2016. [DOI: 10.1002/ejoc.201600526] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Dániel Eszenyi
- Department of Pharmaceutical Chemistry; University of Debrecen; Egyetem tér 1 4032 Debrecen Hungary
| | - Attila Mándi
- Department of Organic Chemistry; University of Debrecen; Egyetem tér 1 4032 Debrecen Hungary
| | - Mihály Herczeg
- Department of Pharmaceutical Chemistry; University of Debrecen; Egyetem tér 1 4032 Debrecen Hungary
| | - Attila Bényei
- Department of Pharmaceutical Chemistry; University of Debrecen; Egyetem tér 1 4032 Debrecen Hungary
| | - István Komáromi
- Division of Clinical Laboratory Science; Department of Laboratory Medicine; University of Debrecen; Nagyerdei krt 1 4032 Debrecen Hungary
| | - Anikó Borbás
- Department of Pharmaceutical Chemistry; University of Debrecen; Egyetem tér 1 4032 Debrecen Hungary
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29
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Kicsák M, Bege M, Bereczki I, Csávás M, Herczeg M, Kupihár Z, Kovács L, Borbás A, Herczegh P. A three-component reagent system for rapid and mild removal of O-, N- and S-trityl protecting groups. Org Biomol Chem 2016; 14:3190-2. [DOI: 10.1039/c6ob00067c] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A synergistic effect of BF3·Et2O, hexafluoroisopropanol and triethylsilane led to efficient detritylation of nucleoside, monosaccharide and amino acid derivatives.
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Affiliation(s)
- Máté Kicsák
- Department of Pharmaceutical Chemistry
- University of Debrecen
- H-4032 Debrecen
- Hungary
| | - Miklós Bege
- Department of Pharmaceutical Chemistry
- University of Debrecen
- H-4032 Debrecen
- Hungary
| | - Ilona Bereczki
- Department of Pharmaceutical Chemistry
- University of Debrecen
- H-4032 Debrecen
- Hungary
| | - Magdolna Csávás
- Department of Pharmaceutical Chemistry
- University of Debrecen
- H-4032 Debrecen
- Hungary
| | - Mihály Herczeg
- Department of Pharmaceutical Chemistry
- University of Debrecen
- H-4032 Debrecen
- Hungary
| | - Zoltán Kupihár
- Department of Medicinal Chemistry
- University of Szeged
- H-6720 Szeged
- Hungary
| | - Lajos Kovács
- Department of Medicinal Chemistry
- University of Szeged
- H-6720 Szeged
- Hungary
| | - Anikó Borbás
- Department of Pharmaceutical Chemistry
- University of Debrecen
- H-4032 Debrecen
- Hungary
| | - Pál Herczegh
- Department of Pharmaceutical Chemistry
- University of Debrecen
- H-4032 Debrecen
- Hungary
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30
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Mentler T, Wolters C, Herczeg M. Use cases and usability challenges for head-mounted displays in healthcare. Current Directions in Biomedical Engineering 2015. [DOI: 10.1515/cdbme-2015-0127] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
AbstractIn the healthcare domain, head-mounted displays (HMDs) with augmented reality (AR) modalities have been reconsidered for application as a result of commercially available products and the needs for using computers in mobile context. Within a user-centered design approach, interviews were conducted with physicians, nursing staff and members of emergency medical services. Additionally practitioners were involved in evaluating two different head-mounted displays. Based on these measures, use cases and usability considerations according to interaction design and information visualization were derived and are described in this contribution.
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Affiliation(s)
- T. Mentler
- 1Institute for Multimedia and Interactive Systems (IMIS), University of Lübeck, Ratzeburger Allee 160, 23562 Lübeck, Germany, phone: +49 451 500 5174, fax: +49 451 500 5106
| | - C. Wolters
- 2Institute for Multimedia and Interactive Systems (IMIS), University of Lübeck, Ratzeburger Allee 160, 23562 Lübeck, Germany
| | - M. Herczeg
- 2Institute for Multimedia and Interactive Systems (IMIS), University of Lübeck, Ratzeburger Allee 160, 23562 Lübeck, Germany
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31
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Herczeg M, Demeter F, Mező E, Pap M, Borbás A. Simultaneous Application of Arylmethylene Acetal and Butane Diacetal Groups for Protection of Hexopyranosides: Synthesis and Chemoselective Ring-Opening Reactions. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500732] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Csávás M, Miskovics A, Szűcs Z, Rőth E, Nagy ZL, Bereczki I, Herczeg M, Batta G, Nemes-Nikodém É, Ostorházi E, Rozgonyi F, Borbás A, Herczegh P. Synthesis and antibacterial evaluation of some teicoplanin pseudoaglycon derivatives containing alkyl- and arylthiosubstituted maleimides. J Antibiot (Tokyo) 2015; 68:579-85. [PMID: 25829202 DOI: 10.1038/ja.2015.33] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2014] [Revised: 02/18/2015] [Accepted: 02/27/2015] [Indexed: 12/11/2022]
Abstract
Bis-alkylthio maleimido derivatives have been prepared from teicoplanin pseudoaglycon by reaction of its primary amino group with N-ethoxycarbonyl bis-alkylthiomaleimides. Some of the new derivatives displayed excellent antibacterial activity against resistant bacteria.
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Affiliation(s)
- Magdolna Csávás
- Department of Pharmaceutical Chemistry, University of Debrecen, Debrecen, Hungary
| | - Adrienn Miskovics
- Department of Pharmaceutical Chemistry, University of Debrecen, Debrecen, Hungary
| | - Zsolt Szűcs
- Department of Pharmaceutical Chemistry, University of Debrecen, Debrecen, Hungary
| | - Erzsébet Rőth
- Department of Pharmaceutical Chemistry, University of Debrecen, Debrecen, Hungary
| | - Zsolt L Nagy
- Department of Pharmaceutical Chemistry, University of Debrecen, Debrecen, Hungary
| | - Ilona Bereczki
- Department of Pharmaceutical Chemistry, University of Debrecen, Debrecen, Hungary
| | - Mihály Herczeg
- Department of Pharmaceutical Chemistry, University of Debrecen, Debrecen, Hungary
| | - Gyula Batta
- Department of Organic Chemistry, University of Debrecen, Debrecen, Hungary
| | - Éva Nemes-Nikodém
- Department of Dermatology, Venerology and Dermatooncology, Microbiology Laboratory, Semmelweis University, Budapest, Hungary
| | - Eszter Ostorházi
- Department of Dermatology, Venerology and Dermatooncology, Microbiology Laboratory, Semmelweis University, Budapest, Hungary
| | - Ferenc Rozgonyi
- Department of Dermatology, Venerology and Dermatooncology, Microbiology Laboratory, Semmelweis University, Budapest, Hungary
| | - Anikó Borbás
- Department of Pharmaceutical Chemistry, University of Debrecen, Debrecen, Hungary
| | - Pál Herczegh
- Department of Pharmaceutical Chemistry, University of Debrecen, Debrecen, Hungary
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Bakai-Bereczki I, Herczeg M, György B, Naesens L, Herczegh P. Synthesis of a sialic acid derivative of ristocetin aglycone as an inhibitor of influenza virus. Chemical Papers 2015. [DOI: 10.1515/chempap-2015-0116] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
AbstractIn order to promote attachment of the ristocetin aglycone molecule to the surface of the influenza virus, the aglycone was derivatized with a hemagglutinin ligand sialic acid moiety using a click reaction. The sialoristocetin derivative exhibited somewhat lower anti-influenza virus activity than ristocetin and aglycoristocetin.
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Csávás M, Demeter T, Herczeg M, Timári I, Kövér KE, Herczegh P, Borbás A. Rapid synthesis of self-assembling 1,2-thiomannobioside glycoconjugates as potential multivalent ligands of mannose-binding lectins. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.10.104] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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Herczeg M, Mező E, Eszenyi D, Antus S, Borbás A. New synthesis of idraparinux, the non-glycosaminoglycan analogue of the antithrombin-binding domain of heparin. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.03.033] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Fekete A, Eszenyi D, Herczeg M, Pozsgay V, Borbás A. Preparation of synthetic oligosaccharide-conjugates of poly-β-(1→6)-N-acetyl glucosamine. Carbohydr Res 2014; 386:33-40. [DOI: 10.1016/j.carres.2013.12.022] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2013] [Revised: 12/23/2013] [Accepted: 12/27/2013] [Indexed: 10/25/2022]
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Mező E, Herczeg M, Eszenyi D, Borbás A. Large-scale synthesis of 6-deoxy-6-sulfonatomethyl glycosides and their application for novel synthesis of a heparinoid pentasaccharide trisulfonic acid of anticoagulant activity. Carbohydr Res 2014; 388:19-29. [PMID: 24607537 DOI: 10.1016/j.carres.2014.02.012] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2014] [Revised: 02/05/2014] [Accepted: 02/09/2014] [Indexed: 11/17/2022]
Abstract
Multigram-scale syntheses of three 6-deoxy-6-sulfonatomethyl α-glucosides were accomplished via reactions of the corresponding primary triflate derivatives with the lithiated ethyl methanesulfonate. Chemoselective glycosylation reactions of different 6-C-sulfonatomethyl glucoside donors were studied. The sulfonic acid-containing building blocks were utilised in a novel [2+3] block synthesis of a trisulfonic acid isoster of the anticoagulant pentasaccharide idraparinux.
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Affiliation(s)
- Erika Mező
- Department of Pharmaceutical Chemistry, Medical and Health Science Center, University of Debrecen, PO Box 70, H-4010 Debrecen, Hungary; Department of Organic Chemistry, University of Debrecen, PO Box 20, H-4010 Debrecen, Hungary
| | - Mihály Herczeg
- Department of Organic Chemistry, University of Debrecen, PO Box 20, H-4010 Debrecen, Hungary
| | - Dániel Eszenyi
- Department of Pharmaceutical Chemistry, Medical and Health Science Center, University of Debrecen, PO Box 70, H-4010 Debrecen, Hungary; Department of Organic Chemistry, University of Debrecen, PO Box 20, H-4010 Debrecen, Hungary
| | - Anikó Borbás
- Department of Pharmaceutical Chemistry, Medical and Health Science Center, University of Debrecen, PO Box 70, H-4010 Debrecen, Hungary.
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Herczeg M, Mező E, Eszenyi D, Lázár L, Csávás M, Bereczki I, Antus S, Borbás A. Synthesis of 6-Sulfonatomethyl Thioglycosides by Nucleophilic Substitution: Methods to Prevent 1→6 Anomeric Group Migration of Thioglycoside 6-O-Triflates. European J Org Chem 2013. [DOI: 10.1002/ejoc.201300681] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Herczeg M, Mező E, Lázár L, Fekete A, Kövér KE, Antus S, Borbás A. Novel syntheses of Idraparinux, the anticoagulant pentasaccharide with indirect selective factor Xa inhibitory activity. Tetrahedron 2013. [DOI: 10.1016/j.tet.2013.02.076] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Affiliation(s)
- Magdolna Csávás
- Department of Pharmaceutical Chemistry, Medical and Health Science Center, University of Debrecen
| | - Anikó Borbás
- Department of Pharmaceutical Chemistry, Medical and Health Science Center, University of Debrecen
| | - Mihály Herczeg
- Research Group for Carbohydrates of the Hungarian Academy of Sciences
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Lázár L, Csávás M, Hadházi Á, Herczeg M, Tóth M, László Somsák, Barna T, Herczegh P, Borbás A. Systematic study on free radical hydrothiolation of unsaturated monosaccharide derivatives with exo- and endocyclic double bonds. Org Biomol Chem 2013; 11:5339-50. [DOI: 10.1039/c3ob40547h] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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Lázár L, Mező E, Herczeg M, Lipták A, Antus S, Borbás A. Synthesis of the non-reducing end trisaccharide of the antithrombin-binding domain of heparin and its bioisosteric sulfonic acid analogues. Tetrahedron 2012. [DOI: 10.1016/j.tet.2012.06.081] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Lázár L, Csávás M, Herczeg M, Herczegh P, Borbás A. Synthesis of S-Linked Glycoconjugates and S-Disaccharides by Thiol–Ene Coupling Reaction of Enoses. Org Lett 2012; 14:4650-3. [DOI: 10.1021/ol302098u] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- László Lázár
- Research Group for Carbohydrates, University of Debrecen, P.O. Box 94, H-4010 Debrecen, Hungary, and Department of Pharmaceutical Chemistry, Medical and Health Science Center, University of Debrecen, P.O. Box 70, H-4010 Debrecen, Hungary
| | - Magdolna Csávás
- Research Group for Carbohydrates, University of Debrecen, P.O. Box 94, H-4010 Debrecen, Hungary, and Department of Pharmaceutical Chemistry, Medical and Health Science Center, University of Debrecen, P.O. Box 70, H-4010 Debrecen, Hungary
| | - Mihály Herczeg
- Research Group for Carbohydrates, University of Debrecen, P.O. Box 94, H-4010 Debrecen, Hungary, and Department of Pharmaceutical Chemistry, Medical and Health Science Center, University of Debrecen, P.O. Box 70, H-4010 Debrecen, Hungary
| | - Pál Herczegh
- Research Group for Carbohydrates, University of Debrecen, P.O. Box 94, H-4010 Debrecen, Hungary, and Department of Pharmaceutical Chemistry, Medical and Health Science Center, University of Debrecen, P.O. Box 70, H-4010 Debrecen, Hungary
| | - Anikó Borbás
- Research Group for Carbohydrates, University of Debrecen, P.O. Box 94, H-4010 Debrecen, Hungary, and Department of Pharmaceutical Chemistry, Medical and Health Science Center, University of Debrecen, P.O. Box 70, H-4010 Debrecen, Hungary
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Herczeg M, Lázár L, Bereczky Z, Kövér KE, Timári I, Kappelmayer J, Lipták A, Antus S, Borbás A. Synthesis and Anticoagulant Activity of Bioisosteric Sulfonic-Acid Analogues of the Antithrombin-Binding Pentasaccharide Domain of Heparin. Chemistry 2012; 18:10643-52. [DOI: 10.1002/chem.201201041] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2012] [Indexed: 11/10/2022]
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Lázár L, Jánossy L, Csávás M, Herczeg M, Borbása A, Antus S. Selective removal of the (2-naphthyl)methyl protecting group in the presence of p-methoxybenzyl group by catalytic hydrogenation. ARKIVOC 2012. [DOI: 10.3998/ark.5550190.0013.526] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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Mentler T, Herczeg M, Jent S, Stoislow M, Kindsmüller MC, Rumland T. Routine Mobile Applications for Emergency Medical Services in Mass Casualty Incidents. ACTA ACUST UNITED AC 2012; 57 Suppl 1:/j/bmte.2012.57.issue-s1-N/bmt-2012-4457/bmt-2012-4457.xml. [DOI: 10.1515/bmt-2012-4457] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Herczeg M. [New synthesis of the anticoagulant pentasaccharide idraparinux and preparation of its analogues containing sulfonic acid moieties]. Acta Pharm Hung 2012; 82:113-119. [PMID: 23230650] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Two novel synthetic pathways were elaborated for the preparation of idraparinux, a heparin-related fully O-sulfated, O-methylated anticoagulant pentasaccharide. Both methods based upon a [2+3] block synthesis utilizing the same trisaccharide acceptor which was coupled to either a uronic acid disaccharide donor or its nonoxidized precursor. Two bioisosteric sulfonic acid analogues of idraparinux were also prepared, in which two or three primary sulfate esters were replaced by sodium-sulfonatomethyl moieties. The sulfonic acid groups were formed on a monosaccharide level and the obtained carbohydrate sulfonic acid esters were found to be excellent donors and acceptors in the glycosylation reactions. The disulfonic-acid analogue was prepared in a [2+3] block synthesis by using a trisaccharide disulfonic acid as an acceptor and a glucuronide disaccharide as a donor. For the synthesis of the pentasaccharide trisulfonic acid, a more-efficient approach, which involved elongation of the trisaccharide acceptor with a non-oxidized precursor of the glucuronic acid followed by post-glycosidation oxidation at the tetrasaccharide level and a subsequent [1+4] coupling reaction, was elaborated. In vitro evaluation of the anticoagulant activity of the reference compound idraparinux and the new sulfonic acid derivatives revealed that the disulfonate analogue inhibited the blood-coagulation-proteinase factor Xa with outstanding efficacy; however, the introduction of the third sulfonic acid moiety resulted in a notable decrease in the anti-Xa activity.
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Affiliation(s)
- Mihály Herczeg
- Debreceni Egyetem, Természettudományi és Technológiai Kar, Szerves Kémiai Tanszék, DE-MTA Szénhidrátkémiai Kutatócsoport, 4032, Debrecen Egyetem tér 1.
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Szikra D, Mándi A, Borbás A, Nagy IP, Komáromi I, Kiss-Szikszai A, Herczeg M, Antus S. A kinetic study on the reductive opening of the diphenylmethylene acetal in methyl 2,3-O-diphenylmethylene-α-l-rhamnopyranoside. Carbohydr Res 2011; 346:2004-6. [DOI: 10.1016/j.carres.2011.04.041] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2011] [Revised: 04/18/2011] [Accepted: 04/27/2011] [Indexed: 11/17/2022]
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Herczeg M, Lázár L, Mándi A, Borbás A, Komáromi I, Lipták A, Antus S. Synthesis of disaccharide fragments of the AT-III binding domain of heparin and their sulfonatomethyl analogues. Carbohydr Res 2011; 346:1827-36. [DOI: 10.1016/j.carres.2011.06.021] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2010] [Revised: 06/08/2011] [Accepted: 06/20/2011] [Indexed: 11/25/2022]
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50
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Herczeg M, Lázár L, Borbás A, Lipták A, Antus S. Toward synthesis of the isosteric sulfonate analogues of the AT-III binding domain of heparin. Org Lett 2009; 11:2619-22. [PMID: 19473011 DOI: 10.1021/ol900952d] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
D-glucuronate and l-iduronate containing disaccharides related to the antithrombin-binding pentasaccharide of heparin, in which one of the sulfate esters is systematically replaced by a sodium sulfonatomethyl moiety, were synthesized. The sulfonic acid group was introduced by stereoselective radical addition onto the exomethylene moiety of the appropriate glycoside derivatives, and the resulting sulfonatomethyl glucosides were used as acceptors.
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Affiliation(s)
- Mihály Herczeg
- Research Group for Carbohydrates of the Hungarian Academy of Sciences, P.O. Box 94, H-4010 Debrecen, Hungary
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