1
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Anti-angiogenic properties of sulfated polysaccharides fucoidans and their analogs. Russ Chem Bull 2022. [DOI: 10.1007/s11172-022-3680-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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2
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Kiselevskiy MV, Anisimova NY, Bilan MI, Usov AI, Ustyuzhanina NE, Petkevich AA, Shubina IZ, Morozevich GE, Nifantiev NE. Prospects for the Use of Marine Sulfated Fucose-Rich Polysaccharides in Treatment and Prevention of COVID-19 and Post-COVID-19 Syndrome. RUSSIAN JOURNAL OF BIOORGANIC CHEMISTRY 2022; 48:1109-1122. [PMID: 36325402 PMCID: PMC9584273 DOI: 10.1134/s1068162022060152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/02/2022] [Revised: 07/18/2022] [Accepted: 07/29/2022] [Indexed: 01/03/2023]
Abstract
Symptoms of the new coronavirus infection that appeared in 2019 (COVID-19) range from low fever and fatigue to acute pneumonia and multiple organ failure. The clinical picture of COVID-19 is heterogeneous and involves most physiological systems; therefore, drugs with a wide spectrum of mechanism of action are required. The choice of the treatment strategy for post-COVID-19 syndrome is still a challenge to be resolved. Polysaccharides with a high fucose content derived from seaweed and marine animals can form the basis for the subsequent development of promising agents for the treatment of COVID-19 and post-COVID-19 syndrome. This class of biopolymers is characterized by a variety of biological activities, including antiviral, antithrombotic, anticoagulant, hemo-stimulating, anti-inflammatory and immune-regulatory. Low molecular weight derivatives of these polysaccharides, as well as synthetic oligosaccharides with a sufficient amount and sulfation type may be considered as the most promising compounds due to their better bioavailability, which undoubtedly increases their therapeutic potential.
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Affiliation(s)
- M. V. Kiselevskiy
- Blokhin National Medical Research Center of Oncology, 115552 Moscow, Russia
| | - N. Yu. Anisimova
- Blokhin National Medical Research Center of Oncology, 115552 Moscow, Russia
| | - M. I. Bilan
- Laboratory of Glycoconjugate Chemistry, Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 119991 Moscow, Russia
| | - A. I. Usov
- Laboratory of Glycoconjugate Chemistry, Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 119991 Moscow, Russia
| | - N. E. Ustyuzhanina
- Laboratory of Glycoconjugate Chemistry, Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 119991 Moscow, Russia
| | - A. A. Petkevich
- Blokhin National Medical Research Center of Oncology, 115552 Moscow, Russia
| | - I. Zh. Shubina
- Blokhin National Medical Research Center of Oncology, 115552 Moscow, Russia
| | - G. E. Morozevich
- Orekhovich Institute of Biomedical Chemistry, 119121 Moscow, Russia
| | - N. E. Nifantiev
- Laboratory of Glycoconjugate Chemistry, Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 119991 Moscow, Russia
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3
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Perspectives for the Use of Fucoidans in Clinical Oncology. Int J Mol Sci 2022; 23:ijms231911821. [PMID: 36233121 PMCID: PMC9569813 DOI: 10.3390/ijms231911821] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Revised: 09/28/2022] [Accepted: 09/30/2022] [Indexed: 11/17/2022] Open
Abstract
Fucoidans are natural sulfated polysaccharides that have a wide range of biological functions and are regarded as promising antitumor agents. The activity of various fucoidans and their derivatives has been demonstrated in vitro on tumor cells of different histogenesis and in experiments on mice with grafted tumors. However, these experimental models showed low levels of antitumor activity and clinical trials did not prove that this class of compounds could serve as antitumor drugs. Nevertheless, the anti-inflammatory, antiangiogenic, immunostimulating, and anticoagulant properties of fucoidans, as well as their ability to stimulate hematopoiesis during cytostatic-based antitumor therapy, suggest that effective fucoidan-based drugs could be designed for the supportive care and symptomatic therapy of cancer patients. The use of fucoidans in cancer patients after chemotherapy and radiation therapy might promote the rapid improvement of hematopoiesis, while their anti-inflammatory, immunomodulatory, and anticoagulant effects have the potential to improve the quality of life of patients with advanced cancer.
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4
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OUP accepted manuscript. Glycobiology 2022; 32:529-539. [DOI: 10.1093/glycob/cwab132] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Revised: 12/09/2021] [Accepted: 12/17/2021] [Indexed: 11/14/2022] Open
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5
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VanKoten HW, Moore RS, Cloninger MJ. Nanoparticles To Study Lectins in Caenorhabditis elegans: Multivalent Galactose β1-4 Fucose-Functionalized Dendrimers Provide Protection from Oxidative Stress. Biomacromolecules 2021; 22:4720-4729. [PMID: 34704753 DOI: 10.1021/acs.biomac.1c01001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Galectins are galactoside-binding lectins that are functional dimers or higher-order oligomers. Multivalent binding has been shown to augment the relatively low affinity of the galectins for their galactoside-binding partners, enabling the galectins to play an important role in the global remodeling of cells that occurs during the stress conditions of disease states, including heart disease and cancer. The presence of galectins in the nematode Caenorhabditis elegans and their galactoside-binding properties have been demonstrated, but the role of multivalent interactions for C. elegans galectins is unknown. Here, we describe the synthesis of Galβ1-4Fuc-functionalized poly(amidoamine) dendrimers and their utility in studies using C. elegans during oxidative stress. C. elegans were fed Galβ1-4Fuc-functionalized dendrimers and RNA interference to knock down lectins lec-1 and lec-10 while undergoing oxidative stress. C. elegans that were pretreated with the glycodendrimers were less susceptible to oxidative stress than untreated controls. Worms that were fed fluorescently tagged glycodendrimers and imaged indicated that the dendrimers are primarily present in the digestive tract of the worms, and uptake into the vulva and proximal gonads could also be observed in some instances. This study suggests that multivalently presented Galβ1-4Fuc can protect C. elegans from oxidative stress.
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Affiliation(s)
- Harrison W VanKoten
- Department of Chemistry and Biochemistry, Montana State University, 103 Chemistry and Biochemistry Building, Bozeman, Montana 59717, United States
| | - Rebecca S Moore
- Department of Molecular Biology & LSI Genomics, Princeton University, Princeton, New Jersey 08544, United States
| | - Mary J Cloninger
- Department of Chemistry and Biochemistry, Montana State University, 103 Chemistry and Biochemistry Building, Bozeman, Montana 59717, United States
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Kazakova ED, Yashunsky DV, Nifantiev NE. The Synthesis of Blood Group Antigenic A Trisaccharide and Its Biotinylated Derivative. Molecules 2021; 26:5887. [PMID: 34641431 PMCID: PMC8512078 DOI: 10.3390/molecules26195887] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Revised: 09/24/2021] [Accepted: 09/24/2021] [Indexed: 01/04/2023] Open
Abstract
Blood group antigenic A trisaccharide represents the terminal residue of all A blood group antigens and plays a key role in blood cell recognition and blood group compatibility. Herein, we describe the synthesis of the spacered A trisaccharide by means of an assembly scheme that employs in its most complex step the recently proposed glycosyl donor of the 2-azido-2-deoxy-selenogalactoside type, bearing stereocontrolling 3-O-benzoyl and 4,6-O-(di-tert-butylsilylene)-protecting groups. Its application provided efficient and stereoselective formation of the required α-glycosylation product, which was then deprotected and subjected to spacer biotinylation to give both target products, which are in demand for biochemical studies.
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Affiliation(s)
| | | | - Nikolay E. Nifantiev
- Laboratory of Glycoconjugate Chemistry, N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky pr. 47, 119991 Moscow, Russia; (E.D.K.); (D.V.Y.)
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7
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Shchegravina ES, Sachkova AA, Usova SD, Nyuchev AV, Gracheva YA, Fedorov AY. Carbohydrate Systems in Targeted Drug Delivery: Expectation and Reality. RUSSIAN JOURNAL OF BIOORGANIC CHEMISTRY 2021. [DOI: 10.1134/s1068162021010222] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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8
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Tokatly AI, Vinnitskiy DZ, Ustuzhanina NE, Nifantiev NE. Protecting Groups as a Factor of Stereocontrol in Glycosylation Reactions. RUSSIAN JOURNAL OF BIOORGANIC CHEMISTRY 2021. [DOI: 10.1134/s1068162021010258] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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9
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Azidophenylselenylation of glycals towards 2-azido-2-deoxy-selenoglycosides and their application in oligosaccharide synthesis. PURE APPL CHEM 2020. [DOI: 10.1515/pac-2020-0105] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Abstract
2-Amino-2-deoxy-pyranosyl units are important structural components of cell-wall polymers in prokaryotes, fungi and mammals. With respect to the need for development of novel and efficient vaccines and tools for serodiagnosis of infectious diseases, of particular interest are the oligosaccharide cell-wall antigens of pathogenic bacteria and fungi, which comprise 2-amino-2-deoxy-D-glucopyranose and 2-amino-2-deoxy-D-galactopyranose units as α- or β-anomers. Synthesis of N-acylated α-GlcN and α-GalN containing oligosaccharides is a special challenge due to the presence of a participating group at C2 which favors the formation of β- rather than α-glycoside bond. Herein we overview the efficient two-step approach for preparation of 1,2-cis-glycosides of 2-amino-2-deoxy-D-glucopyranose and 2-amino-2-deoxy-D-galactopyranose, which was recently developed in our laboratory. In the first step, an efficient and straightforward azidophenylselenylation procedure of glycals gives phenyl 2-azido-2-deoxy-1-selenoglycosides as versatile glycosyl donors. In the second step, these donors can be efficiently transformed into α- or β-glycosides depending on the choice of the solvent. In acetonitrile, total β-stereocontrol was achieved, and the use of diethyl ether as a solvent favouring α-stereoselectivity of glycosylations with phenyl 2-azido-2-deoxy-1-selenoglycosides. Besides, it was shown, that low reactivity and nucleophilicity of glycosyl acceptors which are glycosylated with phenyl 2-azido-2-deoxy-1-selenogalactosides facilitated the formation of α-GalN derivatives. To date, homogenous azidophenylselenylation of glycals and glycosylation with phenyl 2-azido-2-deoxy-1-seleno-α-D-glycopyranosides can be regarded as most useful tool for introduction of 2-amino-2-deoxy-D-glycopyranoside residues into complex synthetic oligosaccharides.
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Kazakova ED, Yashunsky DV, Krylov VB, Bouchara JP, Cornet M, Valsecchi I, Fontaine T, Latgé JP, Nifantiev NE. Biotinylated Oligo-α-(1 → 4)-d-galactosamines and Their N-Acetylated Derivatives: α-Stereoselective Synthesis and Immunology Application. J Am Chem Soc 2020; 142:1175-1179. [PMID: 31913631 DOI: 10.1021/jacs.9b11703] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Using 3-O-benzoyl-4,6-O-di-tert-butylsilylidene-2-azido-2-deoxy-selenogalactoside, biotinylated oligo-α-(1 → 4)-d-galactosamines comprising from two to six GalN units were prepared for the first time together with their N-acetylated derivatives. The combination of blocking groups used herein provided stereocontrol for the α-stereospecific glycosylation, to show also high efficiency of phenyl 2-azido-2-deoxy-selenogalactosides as glycosyl donors. The obtained glycoconjugates are related to fragments of exopolysaccharide galactosaminogalactan (GG) found in Aspergillus fumigatus, which is the most important airborne human fungal pathogen in industrialized countries. The synthesized glycoconjugates were arrayed on streptavidin-coated plates and used to investigate the GG epitopes recognized by mouse monoclonal antibodies against GG and by human antibodies in the sera of patients with aspergillosis. The obtained data showed that the oligo-α-(1 → 4)-d-galactosamines and their N-acetylated derivatives allowed the first precise analysis of the specificity of the antibody responses to this extremely complex fungal polysaccharide.
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Affiliation(s)
- Ekaterina D Kazakova
- N.D. Zelinsky Institute of Organic Chemistry , Russian Academy of Sciences , Leninsky Prospect 47 , 119991 Moscow , Russian Federation
| | - Dmitry V Yashunsky
- N.D. Zelinsky Institute of Organic Chemistry , Russian Academy of Sciences , Leninsky Prospect 47 , 119991 Moscow , Russian Federation
| | - Vadim B Krylov
- N.D. Zelinsky Institute of Organic Chemistry , Russian Academy of Sciences , Leninsky Prospect 47 , 119991 Moscow , Russian Federation
| | | | - Murielle Cornet
- University of Grenoble Alpes , CNRS, CHU Grenoble Alpes, Grenoble INP, TIMC-IMAG, 38043 Grenoble , France
| | - Isabel Valsecchi
- Unité des Aspergillus , Institut Pasteur , 75724 Paris , France.,Fungal Biology and Pathogenicity Unit , Institut Pasteur , 75724 Paris , France
| | - Thierry Fontaine
- Unité des Aspergillus , Institut Pasteur , 75724 Paris , France.,Fungal Biology and Pathogenicity Unit , Institut Pasteur , 75724 Paris , France
| | - Jean-Paul Latgé
- Unité des Aspergillus , Institut Pasteur , 75724 Paris , France.,School of Medicine , University of Crete , Heraklion , Greece
| | - Nikolay E Nifantiev
- N.D. Zelinsky Institute of Organic Chemistry , Russian Academy of Sciences , Leninsky Prospect 47 , 119991 Moscow , Russian Federation
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11
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Suprunchuk VE. Low-molecular-weight fucoidan: Chemical modification, synthesis of its oligomeric fragments and mimetics. Carbohydr Res 2019; 485:107806. [DOI: 10.1016/j.carres.2019.107806] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Revised: 07/05/2019] [Accepted: 09/05/2019] [Indexed: 01/18/2023]
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12
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Li J, Cai C, Yang C, Li J, Sun T, Yu G. Recent Advances in Pharmaceutical Potential of Brown Algal Polysaccharides and their Derivatives. Curr Pharm Des 2019; 25:1290-1311. [PMID: 31237200 DOI: 10.2174/1381612825666190618143952] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Accepted: 05/31/2019] [Indexed: 02/07/2023]
Abstract
Marine plants, animals and microorganisms display steady growth in the ocean and are abundant carbohydrate resources. Specifically, natural polysaccharides obtained from brown algae have been drawing increasing attention owing to their great potential in pharmaceutical applications. This review describes the structural and biological features of brown algal polysaccharides, including alginates, fucoidans, and laminarins, and it highlights recently developed approaches used to obtain the oligo- and polysaccharides with defined structures. Functional modification of these polysaccharides promotes their advanced applications in biomedical materials for controlled release and targeted drug delivery, etc. Moreover, brown algal polysaccharides and their derivatives possess numerous biological activities with anticancer, anticoagulant, wound healing, and antiviral properties. In addition, we also discuss carbohydrate- based substrates from brown algae, which are currently in clinical and preclinical studies, as well as the marine drugs that are already on the market. The present review summarizes the recent development in carbohydratebased products from brown algae, with promising findings that could rapidly facilitate the future discovery of novel marine drugs.
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Affiliation(s)
- Jun Li
- Key Laboratory of Marine Drugs, Ministry of Education & Shandong Provincial Key Laboratory of Glycoscience and Glycotechnology, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China
| | - Chao Cai
- Key Laboratory of Marine Drugs, Ministry of Education & Shandong Provincial Key Laboratory of Glycoscience and Glycotechnology, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China
- Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266003, China
| | - Chendong Yang
- Key Laboratory of Marine Drugs, Ministry of Education & Shandong Provincial Key Laboratory of Glycoscience and Glycotechnology, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China
| | - Jianghua Li
- Key Laboratory of Marine Drugs, Ministry of Education & Shandong Provincial Key Laboratory of Glycoscience and Glycotechnology, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China
| | - Tiantian Sun
- Key Laboratory of Marine Drugs, Ministry of Education & Shandong Provincial Key Laboratory of Glycoscience and Glycotechnology, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China
| | - Guangli Yu
- Key Laboratory of Marine Drugs, Ministry of Education & Shandong Provincial Key Laboratory of Glycoscience and Glycotechnology, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China
- Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266003, China
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13
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Anisimova NY, Ustyuzhanina NE, Bilan MI, Donenko FV, Ushakova NA, Usov AI, Kiselevskiy MV, Nifantiev NE. Influence of Modified Fucoidan and Related Sulfated Oligosaccharides on Hematopoiesis in Cyclophosphamide-Induced Mice. Mar Drugs 2018; 16:E333. [PMID: 30216993 PMCID: PMC6164909 DOI: 10.3390/md16090333] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2018] [Revised: 09/04/2018] [Accepted: 09/08/2018] [Indexed: 12/20/2022] Open
Abstract
Immunosuppression derived after cytostatics application in cancer chemotherapy is considered as an adverse side effect that leads to deterioration of quality of life and risk of infectious diseases. A linear sulfated (1→3)-α-l-fucan M-Fuc prepared by chemical modification of a fucoidan isolated from the brown seaweed Chordaria flagelliformis, along with two structurally related synthetic sulfated oligosaccharides, were studied as stimulators of hematopoiesis on a model of cyclophosphamide immunosuppression in mice. Recombinant granulocyte colony-stimulating factor (r G-CSF), which is currently applied in medicine to treat low blood neutrophils, was used as a reference. Polysaccharide M-Fuc and sulfated difucoside DS did not demonstrate significant effect, while sulfated octasaccharide OS showed higher activity than r G-CSF, causing pronounced neutropoiesis stimulation. In addition, production of erythrocytes and platelets was enhanced after the octasaccharide administration. The assessment of populations of cells in blood and bone marrow of mice revealed the difference in mechanisms of action of OS and r G-CSF.
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Affiliation(s)
- Natalia Yu Anisimova
- N.N. Blokhin National Medical Research Center of Oncology, Kashirskoe shosse, 24, 115478 Moscow, Russia.
| | - Nadezhda E Ustyuzhanina
- N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospect 47, 119991 Moscow, Russia.
| | - Maria I Bilan
- N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospect 47, 119991 Moscow, Russia.
| | - Fedor V Donenko
- N.N. Blokhin National Medical Research Center of Oncology, Kashirskoe shosse, 24, 115478 Moscow, Russia.
| | - Natalia A Ushakova
- V.N. Orekhovich Research Institute of Biomedical Chemistry, Pogodinskaya str. 10, 119121 Moscow, Russia.
| | - Anatolii I Usov
- N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospect 47, 119991 Moscow, Russia.
| | - Mikhail V Kiselevskiy
- N.N. Blokhin National Medical Research Center of Oncology, Kashirskoe shosse, 24, 115478 Moscow, Russia.
| | - Nikolay E Nifantiev
- N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospect 47, 119991 Moscow, Russia.
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Ustyuzhanina NE, Bilan MI, Dmitrenok AS, Borodina EY, Nifantiev NE, Usov AI. A highly regular fucan sulfate from the sea cucumber Stichopus horrens. Carbohydr Res 2018; 456:5-9. [DOI: 10.1016/j.carres.2017.12.001] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2017] [Revised: 11/27/2017] [Accepted: 12/06/2017] [Indexed: 10/18/2022]
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15
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Vereshchagin AN. Classical and interdisciplinary approaches to the design of organic and hybrid molecular systems. Russ Chem Bull 2018. [DOI: 10.1007/s11172-017-1950-1] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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16
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Fucoidan and Fucosylated Chondroitin Sulfate Stimulate Hematopoiesis in Cyclophosphamide-Induced Mice. Mar Drugs 2017; 15:md15100301. [PMID: 28973980 PMCID: PMC5666409 DOI: 10.3390/md15100301] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2017] [Revised: 09/20/2017] [Accepted: 09/27/2017] [Indexed: 12/13/2022] Open
Abstract
Application of cytostatics in cancer patients’ chemotherapy results in a number of side effects, including the inhibition of various parts of hematopoiesis. Two sulfated polysaccharides, fucoidan from the seaweed Chordaria flagelliformis (PS-Fuc) and fucosylated chondroitin sulfate from the sea cucumber Massinium magnum (PS-FCS), were studied as stimulators of hematopoiesis after cyclophosphamide immunosuppression in mice. Recombinant granulocyte colony-stimulating factor (r G-CSF) was applied as a reference. Both tested polysaccharides PS-Fuc and PS-FCS have a similar activity to r G-CSF, causing pronounced neutropoiesis stimulation in animals with myelosuppression induced by cyclophosphamide (CPh). Moreover, these compounds are also capable to enhance thrombopoiesis and erythropoiesis. It should be noted that PS-FCS demonstrated a greater activity than r G-CSF. The results indicate the perspective of further studies of PS-Fuc and PS-FCS, since these compounds can be considered as potentially promising stimulators of hematopoiesis. Such drugs are in demand for the accompanying treatment of cancer patients who suffer from hematological toxicity during chemo and/or radiation therapy.
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Damager I, Olsen CE, Egelund J, Jørgensen B, Larsen Petersen B, Ulvskov P, Lindberg Møller B, Motawia MS. Chemical Synthesis of L-Fucose Derivatives for Acceptor Specificity Characterisation of Plant Cell Wall Glycosyltransferases. ChemistrySelect 2017. [DOI: 10.1002/slct.201601315] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Iben Damager
- Section for Plant Glycobiology, Department of Plant and Environmental Sciences; University of Copenhagen; 40 Thorvaldsensvej DK-1871 Frederiksberg C Copenhagen Denmark
| | - Carl Erik Olsen
- Plant Biochemistry Laboratory, Department of Plant and Environmental Sciences; University of Copenhagen; 40 Thorvaldsensvej DK-1871 Frederiksberg C Copenhagen Denmark
- VILLUM Research Center “Plant Plasticity”; University of Copenhagen; 40 Thorvaldsensvej DK-1871 Frederiksberg C Copenhagen Denmark
- Center for Synthetic Biology “bioSYNergy”; University of Copenhagen; Thorvaldsensvej 40 DK-1871 Frederiksberg C Copenhagen Denmark
| | - Jack Egelund
- Section for Plant Glycobiology, Department of Plant and Environmental Sciences; University of Copenhagen; 40 Thorvaldsensvej DK-1871 Frederiksberg C Copenhagen Denmark
| | - Bodil Jørgensen
- Section for Plant Glycobiology, Department of Plant and Environmental Sciences; University of Copenhagen; 40 Thorvaldsensvej DK-1871 Frederiksberg C Copenhagen Denmark
| | - Bent Larsen Petersen
- Section for Plant Glycobiology, Department of Plant and Environmental Sciences; University of Copenhagen; 40 Thorvaldsensvej DK-1871 Frederiksberg C Copenhagen Denmark
| | - Peter Ulvskov
- Section for Plant Glycobiology, Department of Plant and Environmental Sciences; University of Copenhagen; 40 Thorvaldsensvej DK-1871 Frederiksberg C Copenhagen Denmark
| | - Birger Lindberg Møller
- Plant Biochemistry Laboratory, Department of Plant and Environmental Sciences; University of Copenhagen; 40 Thorvaldsensvej DK-1871 Frederiksberg C Copenhagen Denmark
- VILLUM Research Center “Plant Plasticity”; University of Copenhagen; 40 Thorvaldsensvej DK-1871 Frederiksberg C Copenhagen Denmark
- Center for Synthetic Biology “bioSYNergy”; University of Copenhagen; Thorvaldsensvej 40 DK-1871 Frederiksberg C Copenhagen Denmark
- Carlsberg Laboratory; J.C. Jacobsens Gade 4 DK-1799 Copenhagen V Denmark
| | - Mohammed Saddik Motawia
- Plant Biochemistry Laboratory, Department of Plant and Environmental Sciences; University of Copenhagen; 40 Thorvaldsensvej DK-1871 Frederiksberg C Copenhagen Denmark
- VILLUM Research Center “Plant Plasticity”; University of Copenhagen; 40 Thorvaldsensvej DK-1871 Frederiksberg C Copenhagen Denmark
- Center for Synthetic Biology “bioSYNergy”; University of Copenhagen; Thorvaldsensvej 40 DK-1871 Frederiksberg C Copenhagen Denmark
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Shvetsova SV, Shabalin KA, Bobrov KS, Ivanen DR, Ustyuzhanina NE, Krylov VB, Nifantiev NE, Naryzhny SN, Zgoda VG, Eneyskaya EV, Kulminskaya AA. Characterization of a new α-l-fucosidase isolated from Fusarium proliferatum LE1 that is regioselective to α-(1 → 4)-l-fucosidic linkage in the hydrolysis of α-l-fucobiosides. Biochimie 2017; 132:54-65. [DOI: 10.1016/j.biochi.2016.10.014] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2016] [Accepted: 10/25/2016] [Indexed: 10/20/2022]
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19
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Calculation of possible stabilization of glycosyl carbocations in furanosides by different theoretical methods. Russ Chem Bull 2016. [DOI: 10.1007/s11172-015-1222-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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20
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Komarova BS, Tsvetkov YE, Nifantiev NE. Design of α-Selective Glycopyranosyl Donors Relying on Remote Anchimeric Assistance. CHEM REC 2016; 16:488-506. [PMID: 26785933 DOI: 10.1002/tcr.201500245] [Citation(s) in RCA: 90] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2015] [Indexed: 11/08/2022]
Abstract
Oligosaccharides have a variety of versatile biological effects, but unlike peptides and oligonucleotides, investigation of the roles of oligosaccharides is not easy. Since biosynthesis of oligosaccharides does not comply with direct genetic control, their isolation from natural sources and biotechnological preparation are complicated, due to the heterogeneous composition of raw carbohydrates. Oligosaccharide synthesis is needed for the establishment or confirmation of the structure of natural glycocompounds. Also, synthetically prepared, defined oligosaccharides and their derivatives are becoming increasingly important tools for many biological and immunological research projects. The key step of oligosaccharide synthesis involves glycosylation, a reaction that builds glycosidic bonds. Usually, construction of 1,2-trans-bonds is easy, and therefore, this reaction can even be included into automated syntheses. At this time, installation of the 1,2-cis-bond remains simultaneously frustrating and compelling. In our and other laboratories, a strategy of α-selective (1,2-cis) glycosylation, relying on remote anchimeric assistance with acyl groups, is studied. The state of the art in this work is summarized in this review.
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Affiliation(s)
- Bozhena S Komarova
- Laboratory of Glycoconjugate Chemistry, N. D. Zelinsky Institute of Organic Chemistry Russian Academy of Sciences, Leninsky Prospect 47, 119991, Moscow, Russia
| | - Yury E Tsvetkov
- Laboratory of Glycoconjugate Chemistry, N. D. Zelinsky Institute of Organic Chemistry Russian Academy of Sciences, Leninsky Prospect 47, 119991, Moscow, Russia
| | - Nikolay E Nifantiev
- Laboratory of Glycoconjugate Chemistry, N. D. Zelinsky Institute of Organic Chemistry Russian Academy of Sciences, Leninsky Prospect 47, 119991, Moscow, Russia
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Vinnitskiy DZ, Krylov VB, Ustyuzhanina NE, Dmitrenok AS, Nifantiev NE. The synthesis of heterosaccharides related to the fucoidan from Chordaria flagelliformis bearing an α-L-fucofuranosyl unit. Org Biomol Chem 2016; 14:598-611. [PMID: 26536063 DOI: 10.1039/c5ob02040a] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Sulfated polysaccharides, fucoidans, from brown algae are built up mainly of α-L-fucopyranosyl units and form a group of natural biopolymers with a wide spectrum of biological activities. Systematic synthesis of oligosaccharides representing fucoidans' fragments gives molecular probes for detecting pharmacophores within fucoidan polysaccharide chains. Recently, it was discovered that the fucoidan from brown seaweed Chordaria flagelliformis contains not only α-L-fucopyranosyl units but also α-L-fucofuranosyl ones. To establish the influence of the unusual α-L-fucofuranose residue on the biological activity and conformational properties of fucoidans, the synthesis of selectively O-sulfated pentasaccharides, which represent the main repeating unit of the fucoidan from C. flagelliformis, was performed. The features of the synthesis were the use of the pyranoside-into-furanoside rearrangement to prepare the fucofuranoside precursor and remote stereocontrolling participation of O-acyl groups to manage stereoselective α-bond formation in glycosylation reactions.
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Affiliation(s)
- Dmitry Z Vinnitskiy
- Laboratory of Glycoconjugate Chemistry, N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky prospect 47, 119991 Moscow, Russian Federation.
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22
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Ustyuzhanina NE, Fomitskaya PA, Gerbst AG, Dmitrenok AS, Nifantiev NE. Synthesis of the oligosaccharides related to branching sites of fucosylated chondroitin sulfates from sea cucumbers. Mar Drugs 2015; 13:770-87. [PMID: 25648510 PMCID: PMC4344601 DOI: 10.3390/md13020770] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2014] [Revised: 12/29/2014] [Accepted: 01/22/2015] [Indexed: 12/11/2022] Open
Abstract
Natural anionic polysaccharides fucosylated chondroitin sulfates (FCS) from sea cucumbers attract great attention nowadays due to their ability to influence various biological processes, such as blood coagulation, thrombosis, angiogenesis, inflammation, bacterial and viral adhesion. To determine pharmacophore fragments in FCS we have started systematic synthesis of oligosaccharides with well-defined structure related to various fragments of these polysaccharides. In this communication, the synthesis of non-sulfated and selectively O-sulfated di- and trisaccharides structurally related to branching sites of FCS is described. The target compounds are built up of propyl β-d-glucuronic acid residue bearing at O-3 α-l-fucosyl or α-l-fucosyl-(1→3)-α-l-fucosyl substituents. O-Sulfation pattern in the fucose units of the synthetic targets was selected according to the known to date holothurian FCS structures. Stereospecific α-glycoside bond formation was achieved using 2-O-benzyl-3,4-di-O-chloroacetyl-α-l-fucosyl trichloroacetimidate as a donor. Stereochemical outcome of the glycosylation was explained by the remote participation of the chloroacetyl groups with the formation of the stabilized glycosyl cations, which could be attacked by the glycosyl acceptor only from the α-side. The experimental results were in good agreement with the SCF/MP2 calculated energies of such participation. The synthesized oligosaccharides are regarded as model compounds for the determination of a structure-activity relationship in FCS.
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Affiliation(s)
- Nadezhda E Ustyuzhanina
- Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky prospect 47, 119991 Moscow B-334, Russia.
| | | | - Alexey G Gerbst
- Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky prospect 47, 119991 Moscow B-334, Russia.
| | - Andrey S Dmitrenok
- Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky prospect 47, 119991 Moscow B-334, Russia.
| | - Nikolay E Nifantiev
- Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky prospect 47, 119991 Moscow B-334, Russia.
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23
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Ustyuzhanina NE, Bilan MI, Ushakova NA, Usov AI, Kiselevskiy MV, Nifantiev NE. Fucoidans: Pro- or antiangiogenic agents? Glycobiology 2014; 24:1265-74. [DOI: 10.1093/glycob/cwu063] [Citation(s) in RCA: 78] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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24
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Tengdelius M, Lee CJ, Grenegård M, Griffith M, Påhlsson P, Konradsson P. Synthesis and Biological Evaluation of Fucoidan-Mimetic Glycopolymers through Cyanoxyl-Mediated Free-Radical Polymerization. Biomacromolecules 2014; 15:2359-68. [DOI: 10.1021/bm5002312] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
| | | | - Magnus Grenegård
- Department
of Clinical Medicine, School of Health and Medical Sciences, Örebro University, SE-701 82 Örebro, Sweden
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Xing R, Liu S, Yu H, Chen X, Qin Y, Li K, Li P. Extraction and separation of fucoidan from Laminaria japonica with chitosan as extractant. BIOMED RESEARCH INTERNATIONAL 2013; 2013:193689. [PMID: 24350250 PMCID: PMC3857745 DOI: 10.1155/2013/193689] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 07/22/2013] [Revised: 10/22/2013] [Accepted: 10/30/2013] [Indexed: 11/25/2022]
Abstract
Herein the extraction method of fucoidan from Laminaria japonica is reported. Firstly, chitosan, chitosan-N-2-hydroxypropyl trimethyl ammonium chloride (HACC), and hexadecyltrimethylammonium bromide (CPAB) were used to extract the fucoidan. The results showed that chitosan was the optimal extractant compared with the other two extractants. After extraction, different aqueous solutions, including NaCl, KCl, and HCl (pH2), were used to separate fucoidan from chitosan-fucoidan complex. The results showed that the separation ability of NaCl was slightly higher than that of KCl. Moreover, the price of NaCl is lower than that of KCl. Given the quality-price rate, NaCl solution was chosen as the separation solution. Thirdly, the concentration and ratio of NaCl solution : sediment influence the separation of fucoidan from chitosan-fucoidan complex. The results showed that the optimal separation conditions include 4 mol/L NaCl solution with the ratio of NaCl solution to sediment at 30 : 1. Fucoidan content was found to be affected by different separation time. Fucoidan content increased with the increase of separation time, and the optimal separation time was 6 h. Compared with traditional alkali extraction method, this method not only reduces the usage of alkali and acid and alleviate environment pollution, but also has the comparable extraction yield of fucoidan. It is a potential method for extraction of fucoidan.
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Affiliation(s)
- Ronge Xing
- Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China
| | - Song Liu
- Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China
| | - Huahua Yu
- Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China
| | - Xiaolin Chen
- Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China
| | - Yukun Qin
- Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China
| | - Kecheng Li
- Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China
| | - Pengcheng Li
- Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China
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26
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Kumar A, Geng Y, Schmidt RR. Silicon Fluorides for Acid-Base Catalysis in Glycosidations. Adv Synth Catal 2012. [DOI: 10.1002/adsc.201100933] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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27
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Krylov VB, Kaskova ZM, Vinnitskiy DZ, Ustyuzhanina NE, Grachev AA, Chizhov AO, Nifantiev NE. Acid-promoted synthesis of per-O-sulfated fucooligosaccharides related to fucoidan fragments. Carbohydr Res 2011; 346:540-50. [DOI: 10.1016/j.carres.2011.01.005] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2010] [Revised: 01/02/2011] [Accepted: 01/07/2011] [Indexed: 10/18/2022]
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28
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Encinas L, Chiara JL. Polymer-Assisted Solution-Phase Synthesis of Glycosyl Chlorides and Bromides Using a Supported Dialkylformamide as Catalyst. ACTA ACUST UNITED AC 2008; 10:361-3. [DOI: 10.1021/cc800022h] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Lourdes Encinas
- Instituto de Química Orgánica General, CSIC; Juan de la Cierva 3, E-28006 Madrid, Spain
| | - Jose Luis Chiara
- Instituto de Química Orgánica General, CSIC; Juan de la Cierva 3, E-28006 Madrid, Spain
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29
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Bilan MI, Zakharova AN, Grachev AA, Shashkov AS, Nifant'ev NE, Usov AI. [Polysaccharides of algae: 60. Fucoidan from the Pacific brown alga Analipus japonicus (Harv.) Winne (Ectocarpales, Scytosiphonaceae)]. BIOORGANICHESKAIA KHIMIIA 2007; 33:44-53. [PMID: 17375658 DOI: 10.1134/s1068162007010049] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
A fucoidan containing L-fucose, sulfate, and O-acetyl groups at a molar ratio of 3 : 2 : 1, as well as minor amounts of xylose, galactose, and uronic acids was isolated from the brown alga Analipus japonicus collected in the Sea of Japan. The structures of the native polysaccharide and the products of its desulfation and deacetylation were studied by the methods of methylation, periodate oxidation, and NMR spectroscopy. It was shown that the polysaccharide molecule mainly consists of a linear carbohydrate chain of (1-->3)-linked alpha-L-fucopyranose residues, which bear numerous branches in the form of single alpha-L-fucopyranose residues (three branches at position 4 and one branch at position 2 per each ten residues of the main chain). Sulfate groups occupy positions 2 and (to a lesser extent) 4, most of the terminal nonreducing fucose residues being sulfated twice. The acetyl groups are located predominantly at positions 4. The structural role of minor monosaccharides was not established.
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Gerbst AG, Ustuzhanina NE, Grachev AA, Khatuntseva EA, Tsvetkov DE, Whitfield DM, Berces A, Nifantiev NE. SYNTHESIS, NMR, AND CONFORMATIONAL STUDIES OF FUCOIDAN FRAGMENTS. III. EFFECT OF BENZOYL GROUP AT O-3 ON STEREOSELECTIVITY OF GLYCOSYLATION BY 3-O- AND 3,4-DI-O-BENZOYLATED 2-O-BENZYLFUCOSYL BROMIDES. J Carbohydr Chem 2006. [DOI: 10.1081/car-100108659] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Alexey G. Gerbst
- a N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences , Leninsky prospect 47, Moscow B-334, 119991, Russia
| | - Nadezhda E. Ustuzhanina
- a N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences , Leninsky prospect 47, Moscow B-334, 119991, Russia
| | - Alexey A. Grachev
- b Russian Academy of Sciences , Higher Chemical College , Moscow, Russian Federation
| | - Elena A. Khatuntseva
- a N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences , Leninsky prospect 47, Moscow B-334, 119991, Russia
| | - Dmitry E. Tsvetkov
- a N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences , Leninsky prospect 47, Moscow B-334, 119991, Russia
| | - Dennis M. Whitfield
- c National Research Council of Canada , 100 Sussex Drive, Ottawa, ON, K1A, OR6, Canada
| | - Attila Berces
- c National Research Council of Canada , 100 Sussex Drive, Ottawa, ON, K1A, OR6, Canada
| | - Nikolay E. Nifantiev
- a N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences , Leninsky prospect 47, Moscow B-334, 119991, Russia
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31
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Gerbst AG, Ustuzhanina NE, Grachev AA, Zlotina NS, Khatuntseva EA, Tsvetkov DE, Shashkov AS, Usov AI, Nifantiev NE. SYNTHESIS, NMR, AND CONFORMATIONAL STUDIES OF FUCOIDAN FRAGMENTS 4: 4-MONO- AND 4,4′-DISULFATED (1→3)-α-l-FUCOBIOSIDE AND 4-SULFATED FUCOSIDE FRAGMENTS. J Carbohydr Chem 2006. [DOI: 10.1081/car-120013500] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Alexey G. Gerbst
- a N.D. Zelinsky Institute of Organic Chemistry , Russian Academy of Sciences , Leninsky Prospect 47, 119991, Moscow, B-334, Russia
| | - Nadezhda E. Ustuzhanina
- a N.D. Zelinsky Institute of Organic Chemistry , Russian Academy of Sciences , Leninsky Prospect 47, 119991, Moscow, B-334, Russia
| | - Alexey A. Grachev
- b Higher Chemical College , Russian Academy of Sciences , Moscow, Russian Federation
| | - Natalya S. Zlotina
- b Higher Chemical College , Russian Academy of Sciences , Moscow, Russian Federation
| | - Elena A. Khatuntseva
- a N.D. Zelinsky Institute of Organic Chemistry , Russian Academy of Sciences , Leninsky Prospect 47, 119991, Moscow, B-334, Russia
| | - Dmitry E. Tsvetkov
- a N.D. Zelinsky Institute of Organic Chemistry , Russian Academy of Sciences , Leninsky Prospect 47, 119991, Moscow, B-334, Russia
| | - Alexander S. Shashkov
- a N.D. Zelinsky Institute of Organic Chemistry , Russian Academy of Sciences , Leninsky Prospect 47, 119991, Moscow, B-334, Russia
| | - Anatoly I. Usov
- a N.D. Zelinsky Institute of Organic Chemistry , Russian Academy of Sciences , Leninsky Prospect 47, 119991, Moscow, B-334, Russia
| | - Nikolay E. Nifantiev
- c N.D. Zelinsky Institute of Organic Chemistry , Russian Academy of Sciences , Leninsky Prospect 47, 119991, Moscow, B-334, Russia
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32
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Bilan MI, Grachev AA, Shashkov AS, Nifantiev NE, Usov AI. Structure of a fucoidan from the brown seaweed Fucus serratus L. Carbohydr Res 2006; 341:238-45. [PMID: 16330004 DOI: 10.1016/j.carres.2005.11.009] [Citation(s) in RCA: 159] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2005] [Revised: 11/02/2005] [Accepted: 11/11/2005] [Indexed: 11/21/2022]
Abstract
A fucoidan consisting of L-fucose, sulfate and acetate in a molar proportion of 1:1:0.1 and small amounts of xylose and galactose were isolated from the brown seaweed Fucus serratus L. The fucoidan structure was investigated by 1D and 2D 1H and 13C NMR spectroscopy of its desulfated and de-O-acetylated derivatives as well as by methylation analysis of the native and desulfated polysaccharides. A branched structure was suggested for the fucoidan with a backbone of alternating 3- and 4-linked alpha-L-fucopyranose residues, -->3)-alpha-L-Fucp-(1-->4)-alpha-L-Fucp-(1-->, about half of the 3-linked residues being substituted at C-4 by trifucoside units alpha-L-Fucp-(1-->4)-alpha-L-Fucp-(1-->3)-alpha-L-Fucp-(1-->. Minor chains built up of 4-linked alpha-fucopyranose and beta-xylose residues were also detected, but their location, as well as the position of galactose residues, remained unknown. Sulfate groups were shown to occupy mainly C-2 and sometimes C-4, although 3,4-diglycosylated and some terminal fucose residues may be nonsulfated. Acetate was found to occupy C-4 of 3-linked Fuc and C-3 of 4-linked Fuc in a ratio of about 7:3.
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Affiliation(s)
- Maria I Bilan
- N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninskii prosp., 47, 119991 Moscow, Russian Federation
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33
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Shingu Y, Miyachi A, Miura Y, Kobayashi K, Nishida Y. One-pot α-glycosylation pathway via the generation in situ of α-glycopyranosyl imidates in N,N-dimethylformamide. Carbohydr Res 2005; 340:2236-44. [PMID: 16098494 DOI: 10.1016/j.carres.2005.07.020] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2005] [Accepted: 07/13/2005] [Indexed: 11/17/2022]
Abstract
Divergent pathways are disclosed in the activation of 2-O-benzyl-1-hydroxy sugars by a reagent combination of CBr4 and Ph3P, all of which afford one-pot alpha-glycosylation methods. When this reagent is used in CH2Cl2, the 1-hydroxy sugar is converted to the alpha-glycosyl bromide in a conventional way and leads to the one-pot alpha-glycosylation method based on a halide ion-catalytic mechanism. In either DMF or a mixture of DMF and CHCl3, however, alternative alpha-glycosyl species are generated. From the 1H and 13C NMR study of the products, as well as the reactions using Vilsmeier reagents [(CH3)2N+=CHX]X- (X=Br and Cl), these were identified as cationic alpha-glycopyranosyl imidates having either Br- or Cl- counter ion. The cationic alpha-glycosyl imidate (Br-), derived specifically in the presence of DMF, is more reactive than the alpha-glycosyl bromide and thus is responsible for the accelerated one-pot alpha-glycosylation. The one-pot alpha-glycosylation methodology performed in DMF was assessed also with different types of acceptor substrates including tertiary alcohols and an anomeric mixture of 1-OH sugars.
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Affiliation(s)
- Yuko Shingu
- Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University, Chikusa-ku, Nagoya 464-8603, Japan
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Grachev AA, Gerbst AG, Ustuzhanina NE, Khatuntseva EA, Shashkov AS, Usov AI, Nifantiev NE. Synthesis, NMR, and Conformational Studies of Fucoidan Fragments. VII.1 Influence of Length and 2,3‐Branching on the Conformational Behavior of Linear (1→3)‐Linked Oligofucoside Chains. J Carbohydr Chem 2005. [DOI: 10.1081/car-200050543] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Stortz CA. mm3 Potential energy surfaces of α-3-linked l-fucobiose and fucotriose and their sulfated counterparts. Carbohydr Res 2004; 339:2381-90. [PMID: 15388353 DOI: 10.1016/j.carres.2004.06.024] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2004] [Accepted: 06/10/2004] [Indexed: 11/27/2022]
Abstract
The adiabatic potential energy surfaces (PES) of alpha-L-Fuc-(1-->3)-alpha-L-Fuc and their counterparts disulfated at 2,2' and 4,4', and tetrasulfated at 2,2',4,4', which are representative of fucoidan structures, were obtained using the mm3 force field, and plotted as contour maps and as 2D graphs representing the energy versus the psi angle. The surfaces of the corresponding trisaccharides were also obtained and represented by a single 3D contour map for which the energy is plotted against the two psi glycosidic angles. For the nonsulfated disaccharide, similar populations of two minima occur. A substantial sulfate effect is observed. Whereas sulfation on both of the 2-positions shift the global minimum to positive psiH angles, sulfation on both of the 4-positions deepen the well at negative psiH values. A similar effect occurred in their galactose counterparts. Sulfation on the 2- and 4-positions carry the additive effect of both groups. The same trend was observed for both linkages present in the trisaccharides, with minor differences. For instance, the 4,4',4" trisulfated compound exhibits a trend by which the glycosidic linkage closer to the nonreducing end appears to be highly flexible, with similar energies in both conformers. Raising the dielectric constant on nonsulfated oligosaccharides was found to give a better agreement with experimental determinations.
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Affiliation(s)
- Carlos A Stortz
- Departamento de Quimica Orgánica-CIHIDECAR, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, 1428 Buenos Aires, Argentina.
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36
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Bilan MI, Grachev AA, Ustuzhanina NE, Shashkov AS, Nifantiev NE, Usov AI. A highly regular fraction of a fucoidan from the brown seaweed Fucus distichus L. Carbohydr Res 2004; 339:511-7. [PMID: 15013388 DOI: 10.1016/j.carres.2003.10.028] [Citation(s) in RCA: 156] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2003] [Accepted: 10/28/2003] [Indexed: 11/25/2022]
Abstract
A fucoidan fraction consisting of L-fucose, sulfate, and acetate in a molar proportion of 1:1.21:0.08 was isolated from the brown seaweed Fucus distichus collected from the Barents Sea. The 13C NMR spectrum of the fraction was typical of regular polysaccharides containing disaccharide repeating units. According to 1D and 2D 1H and 13C NMR spectra, the fucoidan molecules are built up of alternating 3-linked alpha-L-fucopyranose 2,4-disulfate and 4-linked alpha-L-fucopyranose 2-sulfate residues: -->3)-alpha-L-Fucp-(2,4-di-SO3-)-(1-->4)-alpha-L-Fucp-(2SO3-)-(1-->. The regular structure may be only slightly masked by random acetylation and undersulfation of several disaccharide repeating units.
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Affiliation(s)
- Maria I Bilan
- N D Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninskii prosp 47, 119991 Moscow, Russian Federation
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37
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Stortz CA, Cerezo AS. MM3 potential energy surfaces of the 2-linked glucosyl trisaccharides alpha-kojitriose and beta-sophorotriose. Carbohydr Res 2003; 338:1679-89. [PMID: 12873423 DOI: 10.1016/s0008-6215(03)00265-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
The adiabatic potential energy surfaces (PES) of two trisaccharides with 2-linkages (alpha-kojitriose and beta-sophorotriose) were obtained using the MM3 force field, and are represented by a single 3D contour map for which the energy is plotted against the two psi glycosidic angles. In spite of the proximity of the positions where the two monosaccharidic units are linked to the central monosaccharide, an almost independent behavior of both linkages was found for the alpha-linked trisaccharide alpha-kojitriose, i.e., the surfaces are those expected from the maps of the disaccharide containing the same linkage. A slight shift of the position of the global minimum is found to occur, due to a hydrogen bond between the third and first monosaccharide units, which also leads to an increase in flexibility. On the other hand, for the beta-linked trisaccharide beta-sophorotriose, the surface is sharply different from that expected by observation of the disaccharide map. Some of the expected minima cannot appear unless a serious deformation of the phi and/or psi angles is produced. Furthermore, the global minimum corresponds to a combination of different conformations for each of the linkages, whereas another minimum with only slightly higher energy has both glycosidic linkages in a conformation less favored for the disaccharide, though close to that predicted in crystal diffraction studies.
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Affiliation(s)
- Carlos A Stortz
- Departamento de Química Orgánica-CIHIDECAR, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, 1428 Buenos Aires, Argentina.
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38
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Shingu Y, Nishida Y, Dohi H, Kobayashi K. An easy access to halide ion-catalytic alpha-glycosylation using carbon tetrabromide and triphenylphosphine as multifunctional reagents. Org Biomol Chem 2003; 1:2518-21. [PMID: 12956070 DOI: 10.1039/b303984f] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The reaction of a 2-O-benzyl-1-hydroxy sugar with CBr4 and Ph3P generates a glycosyl bromide in situ, which is coupled with an acceptor alcohol in the presence of N,N-tetramethylurea to afford an alpha-glycosyl product virtually quantitatively. In a proposed pathway, the reagent combination plays multiple roles such as the generation of a glycosyl donor, the activation of glycosylation, and the dehydration of the reaction system. These roles allow a simple alpha-glycosylation to be performed without special attention to dehydration. Various alpha-glycosyl (D-gluco-, D-galacto- and L-fuco-) products including glycosyl glycerols and cholesterols have been prepared with this method.
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Affiliation(s)
- Yuko Shingu
- Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University, Furou-chou, Chikusa-ku, Nagoya, 464-8603, Japan
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Gerbst AG, Ustuzhanina NE, Grachev AA, Khatuntseva EA, Tsvetkov DE, Shashkov AS, Usov AI, Preobrazhenskaya ME, Ushakova NA, Nifantiev NE. Synthesis, NMR and Conformational Studies of Fucoidan Fragments. V.[1] Linear 4,4′,4″‐Tri‐O‐Sulfated and Parent Non‐sulfated (1→3)‐Fucotrioside Fragments. J Carbohydr Chem 2003. [DOI: 10.1081/car-120020481] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Bilan MI, Grachev AA, Ustuzhanina NE, Shashkov AS, Nifantiev NE, Usov AI. Structure of a fucoidan from the brown seaweed Fucus evanescens C.Ag. Carbohydr Res 2002; 337:719-30. [PMID: 11950468 DOI: 10.1016/s0008-6215(02)00053-8] [Citation(s) in RCA: 284] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A fucoidan consisting of L-fucose, sulfate and acetate in a molar proportion of 1:1.23:0.36 was isolated from the Pacific brown seaweed Fucus evanescens. The structures of its desulfated and de-O-acetylated derivatives were investigated by 1D and 2D (1)H and (13)C NMR spectroscopy, and the data obtained were confirmed by methylation analysis of the native and desulfated polysaccharides. The fucoidan was shown to contain a linear backbone of alternating 3- and 4-linked alpha-L-fucopyranose 2-sulfate residues: -->3)-alpha-L-Fucp(2SO(3)(-))-(1-->4)-alpha-L-Fucp(2SO(3)(-))-(1-->. Additional sulfate occupies position 4 in a part of 3-linked fucose residues, whereas a part of the remaining hydroxyl groups is randomly acetylated.
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Affiliation(s)
- Maria I Bilan
- N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninskii prosp. 47, 119991 Moscow, Russian Federation
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41
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Abstract
A fucoidan fraction was purified from the brown alga Ascophyllum nodosum. The polysaccharide contained L-fucose and sulfate as the only constituents. Combination of methylation analysis, Smith degradation, FTIR and NMR spectroscopy on the native and the de-sulfated polymers demonstrated that the fucoidan consisted of a highly branched core region with primarily alpha-(1-->3)-linked fucosyl residues and a few alpha-(1-->4) linkages. Branch points were at position 2 of the -->3-linked internal residues. The side chains consisted of single and multi-unit fucosyl residues. The combined analytical data suggested also a complex sulfation pattern with substitution principally at position 2 and/or position 4. Such diversity in the structural features of this fucoidan may be of importance for its various biological properties.
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Affiliation(s)
- M F Marais
- Centre de Recherches sur les Macromolécules Végétales (CERMAV-CNRS, UPR 5301 and Université Joseph Fourier), BP 53, F-38041, Grenoble, France
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