1
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Chigira N, Maeda N, Tachikawa K, Sekiguchi M, Amano Y, Inokuchi M, Li Q, Hasegawa T. Glycosylated tris-bipyridine ferrous complexes as molecular mimics of densely packed glycoclusters on cell surfaces: spatial carbohydrate packing of glycoclusters changes on additions of salts. J Carbohydr Chem 2019. [DOI: 10.1080/07328303.2019.1615500] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Naoto Chigira
- Graduate School of Life Sciences, Toyo University, Ora-gun, Japan
| | - Nao Maeda
- Faculty of Life Sciences, Toyo University, Ora-gun, Japan
| | | | - Maki Sekiguchi
- Faculty of Life Sciences, Toyo University, Ora-gun, Japan
| | - Yoshitsugu Amano
- Graduate School of Life Sciences, Toyo University, Ora-gun, Japan
| | - Mayu Inokuchi
- Faculty of Life Sciences, Toyo University, Ora-gun, Japan
| | - Qintong Li
- Faculty of Life Sciences, Toyo University, Ora-gun, Japan
| | - Teruaki Hasegawa
- Faculty of Life Sciences, Toyo University, Ora-gun, Japan
- Bio-Nano Electronics Research Centre, Toyo University, Kawagoe, Japan
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2
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Ramakrishna B, Sudharani C, Sridhar PR. Synthesis of β- C
-Glycosyl Amino Acids by Ring Opening of Donor-Acceptor Spiro-cyclopropanecarboxylated Sugars. Isr J Chem 2016. [DOI: 10.1002/ijch.201500087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Bandi Ramakrishna
- School of Chemistry; University of Hyderabad, Gachibowli; Hyderabad- 500046 Telangana India
| | - Chalapala Sudharani
- School of Chemistry; University of Hyderabad, Gachibowli; Hyderabad- 500046 Telangana India
| | - Perali Ramu Sridhar
- School of Chemistry; University of Hyderabad, Gachibowli; Hyderabad- 500046 Telangana India
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3
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Moradi SV, Hussein WM, Varamini P, Simerska P, Toth I. Glycosylation, an effective synthetic strategy to improve the bioavailability of therapeutic peptides. Chem Sci 2016; 7:2492-2500. [PMID: 28660018 PMCID: PMC5477030 DOI: 10.1039/c5sc04392a] [Citation(s) in RCA: 166] [Impact Index Per Article: 20.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2015] [Accepted: 01/26/2016] [Indexed: 01/22/2023] Open
Abstract
Glycosylation of peptides is a promising strategy for modulating the physicochemical properties of peptide drugs and for improving their absorption through biological membranes. This review highlights various methods for the synthesis of glycoconjugates and recent progress in the development of glycosylated peptide therapeutics. Furthermore, the impacts of glycosylation in overcoming the existing barriers that restrict oral and brain delivery of peptides are described herein.
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Affiliation(s)
- Shayli Varasteh Moradi
- The University of Queensland , School of Chemistry and Molecular Biosciences , Brisbane , QLD 4072 , Australia .
| | - Waleed M Hussein
- The University of Queensland , School of Chemistry and Molecular Biosciences , Brisbane , QLD 4072 , Australia .
| | - Pegah Varamini
- The University of Queensland , School of Chemistry and Molecular Biosciences , Brisbane , QLD 4072 , Australia .
| | - Pavla Simerska
- The University of Queensland , School of Chemistry and Molecular Biosciences , Brisbane , QLD 4072 , Australia .
| | - Istvan Toth
- The University of Queensland , School of Chemistry and Molecular Biosciences , Brisbane , QLD 4072 , Australia .
- Institute for Molecular Bioscience , The University of Queensland , St. Lucia , QLD 4072 , Australia
- The University of Queensland , School of Pharmacy , Brisbane , QLD 4072 , Australia
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4
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Tomioka T, Takahashi Y, Maejima T, Yabe Y, Iwata H, Hamann MT. Karlotoxin synthetic studies: concise synthesis of a C(42-63) B-ring tetrahydropyran fragment. Tetrahedron Lett 2013; 54:10.1016/j.tetlet.2013.09.104. [PMID: 24376284 PMCID: PMC3873160 DOI: 10.1016/j.tetlet.2013.09.104] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Starting from natural D-mannose, a C(42-63) B-ring tetrahydropyran fragment in karlotoxin 2 has been prepared via a common THP intermediate in a concise manner. E-selective Julia-Kocienski olefination efficiently assembled a C(51-63) chlorodiene subunit and a C(42-50) tetrahydropyran segment.
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Affiliation(s)
- Takashi Tomioka
- Department of Chemistry and Biochemistry, University of Mississippi, University, MS 38677, USA
| | - Yusuke Takahashi
- Department of Chemistry and Biochemistry, University of Mississippi, University, MS 38677, USA
| | - Toshihide Maejima
- Department of Chemistry and Biochemistry, University of Mississippi, University, MS 38677, USA
| | - Yuki Yabe
- Department of Chemistry and Biochemistry, University of Mississippi, University, MS 38677, USA
| | - Hiroki Iwata
- Department of Chemistry and Biochemistry, University of Mississippi, University, MS 38677, USA
| | - Mark T. Hamann
- Department of Chemistry and Biochemistry, University of Mississippi, University, MS 38677, USA
- Department of Pharmacognosy, School of Pharmacy, University of Mississippi, University, MS 38677, USA
- Department of Pharmacology, School of Pharmacy, University of Mississippi, University, MS 38677, USA
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, University, MS 38677, USA
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5
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Thota VN, Gervay-Hague J, Kulkarni SS. Synthesis of β-C-galactosyl D- and L-alanines. Org Biomol Chem 2013; 10:8132-9. [PMID: 22961309 DOI: 10.1039/c2ob26078f] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Synthesis of β-C-D-galactosyl D- and L-alanines is carried out via a highly stereoselective Grignard reaction of glycosyl iodides, Sharpless dihydroxylation and S(N)2 displacement of the corresponding mesylate or tosylate. Alternatively, attempted triflation of the intermediate alcohols triggers a stereoselective debenzylative cyclization leading to interesting bicyclic trans-fused compounds.
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Affiliation(s)
- V Narasimharao Thota
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai 400076, India
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6
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Baldoni L, Marino C. Synthesis of S- and C-galactofuranosides via a galactofuranosyl iodide. Isolable 1-galactofuranosylthiol derivative as a new glycosyl donor. Carbohydr Res 2012; 362:70-8. [DOI: 10.1016/j.carres.2012.08.021] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2012] [Revised: 08/26/2012] [Accepted: 08/27/2012] [Indexed: 12/12/2022]
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7
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Diot JD, Moreno IG, Twigg G, Mellet CO, Haupt K, Butters TD, Kovensky J, Gouin SG. Amphiphilic 1-Deoxynojirimycin Derivatives through Click Strategies for Chemical Chaperoning in N370S Gaucher Cells. J Org Chem 2011; 76:7757-68. [DOI: 10.1021/jo201125x] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Jennifer D. Diot
- Laboratoire des Glucides UMR CNRS 6219, Institut de Chimie de Picardie, Faculté des Sciences, Université de Picardie Jules Verne, 33 rue Saint-Leu, 80039 Amiens Cedex 1, France
| | - Isabel Garcia Moreno
- Departamento de Química Orgánica, Facultad de Química, Universidad de Sevilla C/Profesor García González no. 1, 41012 Sevilla, Spain
| | - Gabriele Twigg
- Oxford Glycobiology Institute, Department of Biochemistry, University of Oxford, South Parks Road, Oxford OX1 3QU, United Kingdom
| | - Carmen Ortiz Mellet
- Departamento de Química Orgánica, Facultad de Química, Universidad de Sevilla C/Profesor García González no. 1, 41012 Sevilla, Spain
| | - Karsten Haupt
- Laboratoire Génie Enzymatique et Cellulaire, UMR CNRS-6022, Université de Technologie de Compiègne BP 20205, 60205 Compiègne Cedex, France
| | - Terry D. Butters
- Oxford Glycobiology Institute, Department of Biochemistry, University of Oxford, South Parks Road, Oxford OX1 3QU, United Kingdom
| | - José Kovensky
- Laboratoire des Glucides UMR CNRS 6219, Institut de Chimie de Picardie, Faculté des Sciences, Université de Picardie Jules Verne, 33 rue Saint-Leu, 80039 Amiens Cedex 1, France
| | - Sébastien G. Gouin
- Laboratoire des Glucides UMR CNRS 6219, Institut de Chimie de Picardie, Faculté des Sciences, Université de Picardie Jules Verne, 33 rue Saint-Leu, 80039 Amiens Cedex 1, France
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8
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Zhang ZX, Wu B, Wang B, Li TH, Zhang PF, Guo LN, Wang WJ, Zhao W, Wang PG. Facile and stereo-controlled synthesis of 2-deoxynojirimycin, Miglustat and Miglitol. Tetrahedron Lett 2011. [DOI: 10.1016/j.tetlet.2011.05.063] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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9
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Li T, Guo L, Zhang Y, Wang J, Zhang Z, Li J, Zhang W, Lin J, Zhao W, Wang PG. Structure–activity relationships in a series of C2-substituted gluco-configured tetrahydroimidazopyridines as β-glucosidase inhibitors. Bioorg Med Chem 2011; 19:2136-44. [DOI: 10.1016/j.bmc.2011.02.043] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2011] [Revised: 02/22/2011] [Accepted: 02/23/2011] [Indexed: 12/26/2022]
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10
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Leaver DJ, Hughes AB, Polyzos A, White JM. X-Ray Crystal Structure Determinations of Galactosylacetylene Building Blocks. J Carbohydr Chem 2011. [DOI: 10.1080/07328303.2011.554935] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- David J. Leaver
- a Department of Chemistry , La Trobe University , Melbourne, Victoria, 3086, Australia
| | - Andrew B. Hughes
- a Department of Chemistry , La Trobe University , Melbourne, Victoria, 3086, Australia
| | - Anastasios Polyzos
- b CSIRO Materials Science and Engineering , Clayton South, Victoria, 3169, Australia
- c Department of Chemistry , University of Cambridge , Cambridge, CB2 1EW, United Kingdom
| | - Jonathan M. White
- d Bio21 Institute, School of Chemistry , University of Melbourne , Parkville, Victoria, 3010, Australia
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11
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Vembaiyan K, Pearcey JA, Bhasin M, Lowary TL, Zou W. Synthesis of sugar-amino acid-nucleosides as potential glycosyltransferase inhibitors. Bioorg Med Chem 2010; 19:58-66. [PMID: 21167722 DOI: 10.1016/j.bmc.2010.11.044] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2010] [Revised: 11/18/2010] [Accepted: 11/22/2010] [Indexed: 11/29/2022]
Abstract
Sugar-amino acid-nucleosides (SAAN) were synthesized to mimic glycosyl nucleotide donors based on the hypothesis that a basic amino acid may interact with carboxylate groups of the enzyme in a manner similar to the diphosphate metal ion complex. C-Glycoside analogues of the d-galactopyranose or l-arabinofuranose ring systems, and four amino acids (lysine, glutamine, tryptophan, and histidine), were chosen for this study. The targets were synthesized and tested against GlfT2, a galactofuranosyltransferase essential for cell wall galactan biosynthesis in Mycobacterium tuberculosis. The inhibition assay showed that analogues containing histidine and tryptophan are moderate inhibitors of GlfT2.
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Affiliation(s)
- Kannan Vembaiyan
- Institute for Biological Sciences, National Research Council of Canada, Ottawa, Ontario, Canada K1A 0R6
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12
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Bapst JP, Calame M, Tanner H, Eberle AN. Glycosylated DOTA−α-Melanocyte-Stimulating Hormone Analogues for Melanoma Targeting: Influence of the Site of Glycosylation on in Vivo Biodistribution. Bioconjug Chem 2009; 20:984-93. [DOI: 10.1021/bc900007u] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Jean-Philippe Bapst
- Laboratory of Endocrinology, Department of Biomedicine, University Hospital and University Children’s Hospital, Basel, Switzerland
| | - Martine Calame
- Laboratory of Endocrinology, Department of Biomedicine, University Hospital and University Children’s Hospital, Basel, Switzerland
| | - Heidi Tanner
- Laboratory of Endocrinology, Department of Biomedicine, University Hospital and University Children’s Hospital, Basel, Switzerland
| | - Alex N. Eberle
- Laboratory of Endocrinology, Department of Biomedicine, University Hospital and University Children’s Hospital, Basel, Switzerland
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13
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Preparation and conformational analysis of C-glycosyl β2- and β/β2-peptides. Carbohydr Res 2009; 344:613-26. [DOI: 10.1016/j.carres.2009.01.018] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2008] [Revised: 01/13/2009] [Accepted: 01/20/2009] [Indexed: 11/20/2022]
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14
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Diot J, García-Moreno MI, Gouin SG, Ortiz Mellet C, Haupt K, Kovensky J. Multivalent iminosugars to modulate affinity and selectivity for glycosidases. Org Biomol Chem 2009; 7:357-63. [DOI: 10.1039/b815408b] [Citation(s) in RCA: 104] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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15
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Kaczmarek P, Keay SK, Tocci GM, Koch KR, Zhang CO, Barchi JJ, Grkovic D, Guo L, Michejda CJ. Structure-activity relationship studies for the peptide portion of the bladder epithelial cell antiproliferative factor from interstitial cystitis patients. J Med Chem 2008; 51:5974-83. [PMID: 18788730 PMCID: PMC2778288 DOI: 10.1021/jm8002763] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We performed comprehensive structure-activity relationship (SAR) studies on the peptide portion of antiproliferative factor (APF), a sialylated frizzled-8 related glycopeptide that inhibits normal bladder epithelial and urothelial carcinoma cell proliferation. Glycopeptide derivatives were synthesized by solid-phase methods using standard Fmoc chemistry and purified by RP-HPLC; all intermediate and final products were verified by HPLC-MS and NMR analyses. Antiproliferative activity of each derivative was determined by inhibition of (3)H-thymidine incorporation in primary normal human bladder epithelial cells. Structural components of the peptide segment of APF that proved to be important for biological activity included the presence of at least eight of the nine N-terminal amino acids, a negative charge in the C-terminal amino acid, a free amino group at the N-terminus, maintenance of a specific amino acid sequence in the C-terminal tail, and trans conformation for the peptide bonds. These data provide critical guidelines for optimization of structure in design of APF analogues as potential therapeutic agents.
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Affiliation(s)
- Piotr Kaczmarek
- Molecular Aspects of Drug Design Section, Structural Biophysics Laboratory, Center for Cancer Research, National Cancer Institute at Frederick, Frederick, Maryland 21702
| | - Susan K. Keay
- Division of Infectious Diseases, Department of Medicine, University of Maryland School of Medicine, Baltimore, Maryland 21201
- Research Service, Veterans Administration Maryland Health Care System, Baltimore, Maryland 21201
| | - Gillian M. Tocci
- Molecular Aspects of Drug Design Section, Structural Biophysics Laboratory, Center for Cancer Research, National Cancer Institute at Frederick, Frederick, Maryland 21702
| | - Kristopher R. Koch
- Division of Infectious Diseases, Department of Medicine, University of Maryland School of Medicine, Baltimore, Maryland 21201
| | - Chen-Ou Zhang
- Division of Infectious Diseases, Department of Medicine, University of Maryland School of Medicine, Baltimore, Maryland 21201
| | - Joseph J. Barchi
- Laboratory of Medicinal Chemistry, Center for Cancer Research, National Cancer Institute at Frederick, Frederick, Maryland 21702
| | - David Grkovic
- Division of Infectious Diseases, Department of Medicine, University of Maryland School of Medicine, Baltimore, Maryland 21201
| | - Li Guo
- Division of Infectious Diseases, Department of Medicine, University of Maryland School of Medicine, Baltimore, Maryland 21201
| | - Christopher J. Michejda
- Molecular Aspects of Drug Design Section, Structural Biophysics Laboratory, Center for Cancer Research, National Cancer Institute at Frederick, Frederick, Maryland 21702
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16
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Niederhafner P, Reinis M, Sebestík J, Jezek J. Glycopeptide dendrimers, part III: a review. Use of glycopeptide dendrimers in immunotherapy and diagnosis of cancer and viral diseases. J Pept Sci 2008; 14:556-87. [PMID: 18275089 DOI: 10.1002/psc.1011] [Citation(s) in RCA: 60] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Glycopeptide dendrimers containing different types of tumor associated-carbohydrate antigens (T(N), TF, sialyl-T(N), sialyl-TF, sialyl-Le(x), sialyl-Le(a) etc.) were used in diagnosis and therapy of different sorts of cancer. These dendrimeric structures with incorporated T-cell epitopes and adjuvants can be used as antitumor vaccines. Best results were obtained with multiantigenic vaccines, containing, e.g. five or six different TAAs. The topic of TAAs and their dendrimeric forms at molecular level are reviewed, including structure, syntheses, and biological activities. Use of glycopeptide dendrimers as antiviral vaccines against HIV and influenza is also described. Their syntheses, physico-chemical properties, and biological activities are given with many examples.
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Affiliation(s)
- Petr Niederhafner
- Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Prague 6, Czech Republic
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17
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Massi A, Nuzzi A, Dondoni A. Microwave-assisted organocatalytic anomerization of alpha-C-glycosylmethyl aldehydes and ketones. J Org Chem 2007; 72:10279-82. [PMID: 18004870 DOI: 10.1021/jo701959b] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The use of l-proline (30 mol %) and MW irradiation (13 W) with cooling promotes in a few hours the almost quantitative anomerization of alpha-C-glycosylmethyl aldehydes into beta-isomers. An open-chain enamine-based mechanism is postulated for this transformation. The anomerization of alpha-ketones was instead achieved by the pyrrolidine/TFA couple and MW irradiation at 120 degrees C (enamine mechanism) and by DBU as Brønsted base (enolate mechanism).
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Affiliation(s)
- Alessandro Massi
- Dipartimento di Chimica, Laboratorio di Chimica Organica, Università di Ferrara, Via L. Borsari 46, I-44100 Ferrara, Italy.
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18
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Moyle PM, Olive C, Ho MF, Pandey M, Dyer J, Suhrbier A, Fujita Y, Toth I. Toward the development of prophylactic and therapeutic human papillomavirus type-16 lipopeptide vaccines. J Med Chem 2007; 50:4721-7. [PMID: 17705361 DOI: 10.1021/jm070287b] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Four lipid-core peptide systems were synthesized using stepwise solid-phase peptide synthesis, incorporating a sequence from the human papillomavirus type-16 (HPV-16) E7 protein (E744-62), for the purpose of developing vaccines against HPV-16 associated cervical cancer. d-Mannose was conjugated to the vaccine in order to investigate whether the targeting of dendritic cell mannose receptors would improve vaccine efficacy. The ability of the vaccines to clear or reduce the size of HPV-16 associated tumors was assessed in C57BL/6 (H-2b) mice using the TC-1 HPV-16 tumor model. Overall, significant reductions in the size of TC-1 tumors were observed in the mouse model, with the conjugation of mannose to these vaccines demonstrated to clear or reduce the size of TC-1 tumors to a greater extent than non-mannose-containing vaccines (37 out of 40 versus 21 out of 30 tumors cleared, respectively).
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Affiliation(s)
- Peter M Moyle
- School of Pharmacy, The University of Queensland, St. Lucia 4072, Queensland, Australia
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21
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Kulkarni SS, Gervay-Hague J. Efficient Synthesis of a C-Analogue of the Immunogenic Bacterial Glycolipid BbGL2. Org Lett 2006; 8:5765-8. [PMID: 17134267 DOI: 10.1021/ol062354m] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Synthesis of a C-analogue of bacterial glycolipid BbGL2 is reported using Grignard reaction of in situ generated beta-galactosyl iodide and subsequent olefin cross metathesis reaction of C-vinyl galactoside as key steps. [reaction: see text]
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Affiliation(s)
- Suvarn S Kulkarni
- Department of Chemistry, University of California-Davis, One Shields Avenue, Davis, CA 95616, USA
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22
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Daniellou R, Palmer DRJ. Appel–Lee synthesis of glycosyl inositols, substrates for inositol dehydrogenase from Bacillus subtilis. Carbohydr Res 2006; 341:2145-50. [PMID: 16729989 DOI: 10.1016/j.carres.2006.05.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2006] [Revised: 05/02/2006] [Accepted: 05/03/2006] [Indexed: 11/15/2022]
Abstract
We recently reported that inositol dehydrogenase (EC 1.1.1.18) from Bacillus subtilis can catalyze the highly stereoselective oxidation of 1l-4-O-substituted myo-inositol derivatives, as well as disaccharides melibiose and isomaltose, but not gentiobiose or maltose, consistent with the requirement of an alpha-(1-->6) linkage. We believed that the enzyme might therefore catalyze efficient stereoselective oxidation of the appropriate alpha-linked glycosyl inositols. We have synthesized alpha-D-glucopyranosyl-(1-->4)-(DL)-myo-inositol and alpha-d-galactopyranosyl-(1-->4)-(DL)-myo-inositol using the Appel-Lee protocol to couple benzyl-protected glycosyl donors to protected inositols. This method failed in our hands using glycosyl donors derived from D-mannose and 2-azido-2-deoxy-D-glucose. When myo-inositol 1,3,5-monoorthoformate is used as the acceptor, the reaction is regiospecific for the 4/6-position. We report here the mildest conditions known for the removal of the orthoformate group. 2-Azido-2-deoxy-alpha-D-glucopyranosyl-(1-->4)-(DL)-myo-inositol was synthesized using the trichloroacetimidate derivative as the donor, and all three pseudo-disaccharides were substrates for inositol dehydrogenase. The glucopyranosyl and galactopyranosyl derivatives displayed apparent second-order rate constants comparable to that of myo-inositol.
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Affiliation(s)
- Richard Daniellou
- Department of Chemistry, University of Saskatchewan, 110 Science Place, Saskatoon, Saskatchewan, Canada S7N 5C9
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23
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Dowlut M, Hall DG, Hindsgaul O. Investigation of Nonspecific Effects of Different Dyes in the Screening of Labeled Carbohydrates against Immobilized Proteins. J Org Chem 2005; 70:9809-13. [PMID: 16292809 DOI: 10.1021/jo051503w] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
[structure: see text] Carbohydrates play an important role in life processes, and combinatorial chemistry can provide useful sources of thousands of synthetic carbohydrates as potential ligands for biological receptors. To accelerate the detection of positive hits arising from specific interactions between a carbohydrate and a protein, the use of fluorescent dyes can serve as a reliable detecting tool. A study of labeled carbohydrates to lectins conjugated to a solid-support shows that succinimidyl 6-(N-(7-nitrobenz-2-oxa-1,3-diazol-4-yl)amino)hexanoate (NBD-X) dye provides by far the lowest level of nonspecific interaction with immobilized protein. This observation is in stark contrast with the commonly used labeling reagents constituted of charged and aromatic groups, for instance, FITC and TAMRA dyes.
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Affiliation(s)
- Meenakshi Dowlut
- Department of Chemistry, University of Alberta, Edmonton, AB T6G 2G2, Canada
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24
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Baytas SN, Wang Q, Karst NA, Dordick JS, Linhardt RJ. Solid-phase chemoenzymatic synthesis of C-sialosides. J Org Chem 2004; 69:6900-3. [PMID: 15387620 PMCID: PMC4135478 DOI: 10.1021/jo0491298] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The chemoenzymatic regioselective acylation of Neu5Ac followed by SmI2-mediated C-glycosylation on a solid support is described for five C-glycosides. This method should facilitate the construction of combinatorial libraries of inhibitors of neuraminidase activity and hemagglutinin interaction as potential antiviral agents.
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Affiliation(s)
- Sultan N. Baytas
- Department of Chemistry and Chemical Biology, Rensselaer Polytechnic Institute, Troy, New York 12180
| | - Qun Wang
- Division of Medicinal and Natural Product Chemistry, The University of Iowa, Iowa City, Iowa 52242
| | - Nathalie A. Karst
- Division of Medicinal and Natural Product Chemistry, The University of Iowa, Iowa City, Iowa 52242
| | - Jonathan S. Dordick
- Department of Biology and Department of Chemical and Biological Engineering, Rensselaer Polytechnic Institute, Troy, New York 12180
| | - Robert J. Linhardt
- Department of Chemistry and Chemical Biology, Rensselaer Polytechnic Institute, Troy, New York 12180
- Department of Biology and Department of Chemical and Biological Engineering, Rensselaer Polytechnic Institute, Troy, New York 12180
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Schuster MC, Mann DA, Buchholz TJ, Johnson KM, Thomas WD, Kiessling LL. Parallel synthesis of glycomimetic libraries: targeting a C-type lectin. Org Lett 2003; 5:1407-10. [PMID: 12713285 DOI: 10.1021/ol0340383] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We have developed methods for the parallel synthesis of two libraries of non-carbohydrate-based analogues of mannose on a solid support. The natural product shikimic acid was used as a key building block. The ability of the compounds to block the binding of the C-type lectin MBP-A to a mannosylated surface was assessed in a high-throughput assay. Ten library members with inhibitory activities equivalent to that of alpha-methyl mannopyranoside were identified. [reaction: see text]
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Affiliation(s)
- Michael C Schuster
- Departments of Chemistry and Biochemistry, University of Wisconsin-Madison, Madison, WI 53706, USA
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