1
|
Bielski R, Mencer D. New syntheses of thiosaccharides utilizing substitution reactions. Carbohydr Res 2023; 532:108915. [PMID: 37597327 DOI: 10.1016/j.carres.2023.108915] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2023] [Revised: 07/30/2023] [Accepted: 07/31/2023] [Indexed: 08/21/2023]
Abstract
Novel synthetic methods published since 2005 affording carbohydrates containing sulfur atom(s) are reviewed. The review is divided to subchapters based on the position of sulfur atom(s) in the sugar molecule. Only those methods that take advantage of substitution are discussed.
Collapse
Affiliation(s)
- Roman Bielski
- Department of Pharmaceutical Sciences, Wilkes University, Wilkes-Barre, PA, 18766, United States; Chemventive, LLC Chadds Ford, PA, 19317, United States.
| | - Donald Mencer
- Department of Chemistry & Biochemistry, Wilkes University, Wilkes-Barre, PA, 18766, United States.
| |
Collapse
|
2
|
Manzano VE, Dada L, Uhrig ML, Varela O. Synthesis of sugar enones and their use as powerful synthetic precursors of thiodisaccharides. Carbohydr Res 2023; 529:108833. [PMID: 37216699 DOI: 10.1016/j.carres.2023.108833] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Revised: 05/04/2023] [Accepted: 05/08/2023] [Indexed: 05/24/2023]
Abstract
Monosaccharide derivatives having a double bond conjugated to a carbonyl (sugar enones or enuloses) are relevant synthetic tools. They are also suitable starting materials, or versatile intermediates, for the synthesis of a wide variety of natural or synthetic compounds with a broad spectrum of biological and pharmacological activities. The preparation of enones is mainly focused on the search for more efficient and diastereoselective synthetic methodologies. The usefulness of enuloses relies on the diverse reaction possibilities offered by alkene and carbonyl double bonds, which are prone to undergo varied reactions such as halogenation, nitration, epoxidation, reduction, addition, etc. The addition of thiol groups that led to sulfur glycomimetics, such as thiooligosaccharides, is particularly relevant. Therefore, the synthesis of enuloses and the Michael addition of sulfur nucleophiles to give thiosugars or thiodisaccharides are discussed here. Chemical modifications of the conjugate addition products to afford biologically active compounds are also reported.
Collapse
Affiliation(s)
- Verónica E Manzano
- Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Departamento de Química Orgánica, Intendente Güiraldes 2160, C1428EHA, Buenos Aires, Argentina; CONICET- Universidad de Buenos Aires, Centro de Investigaciones en Hidratos de Carbono (CIHIDECAR), Buenos Aires, Argentina
| | - Lucas Dada
- Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Departamento de Química Orgánica, Intendente Güiraldes 2160, C1428EHA, Buenos Aires, Argentina; CONICET- Universidad de Buenos Aires, Centro de Investigaciones en Hidratos de Carbono (CIHIDECAR), Buenos Aires, Argentina
| | - María Laura Uhrig
- Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Departamento de Química Orgánica, Intendente Güiraldes 2160, C1428EHA, Buenos Aires, Argentina; CONICET- Universidad de Buenos Aires, Centro de Investigaciones en Hidratos de Carbono (CIHIDECAR), Buenos Aires, Argentina.
| | - Oscar Varela
- Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Departamento de Química Orgánica, Intendente Güiraldes 2160, C1428EHA, Buenos Aires, Argentina; CONICET- Universidad de Buenos Aires, Centro de Investigaciones en Hidratos de Carbono (CIHIDECAR), Buenos Aires, Argentina.
| |
Collapse
|
3
|
Dada L, Colomer JP, Manzano VE, Varela O. Synthesis of thiodisaccharides related to 4-thiolactose. Specific structural modifications increase the inhibitory activity against E. coli β-galactosidase. Org Biomol Chem 2023; 21:2188-2203. [PMID: 36806338 DOI: 10.1039/d2ob02301f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
Abstract
In the search for new glycosidase inhibitors, a set of benzyl β-D-Gal-S-(1→4)-3-deoxy-4-thio-α-D-hexopyranosides was synthesized. Diverse configurations were installed at C-2 and C-4 of the glucose residue. The benzyl glycosidic group was kept intact or substituted by an electron-donating or electron-withdrawing group that could also participate in hydrogen bonding. All thiodisaccharides were found to be inhibitors of E. coli β-galactosidase. In general, benzyl thiodisaccharides were better inhibitors than those substituted (NO2 or NH2) on the benzyl ring. Thiodisaccharides containing a hexopyranoside, instead of a pentopyranoside, showed a weaker inhibitory activity, except for those having the α-D-xylo configuration, which exhibited inhibition constants of the same order of magnitude. These and previous results indicated that the inhibition process by thiodisaccharides is strongly dependent on the configuration of the 3-deoxy-4-thiopyranoside, as well as its substitution pattern (such as the presence of a benzyl glycoside). The enzyme-inhibitor interaction during the hydrolysis process involves a conformational selection resulting from rotation around the thioglycosidic bond and the flexibility of the terminal six-membered ring. Thus, the mentioned structural features of the inhibitor could give rise to favorable ground state conformations for the interaction with the enzyme, similar to those found for selected thiodisaccharides in the bound state. These studies demonstrated that the performance of thiodisaccharides as enzyme inhibitors could be increased by selecting the appropriate configuration and substitution of the hexopyranoside replacing the glucose moiety of 4-thiolactose.
Collapse
Affiliation(s)
- Lucas Dada
- Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Departamento de Química Orgánica, Ciudad Universitaria, Pabellón 2, C1428EHA, Buenos Aires, Argentina. .,Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)-UBA, Centro de Investigación en Hidratos de Carbono (CIHIDECAR)
| | - Juan Pablo Colomer
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)-UNC, Instituto de Investigaciones en Fisico-Química de Córdoba (INFIQC).,Departamento de Química Orgánica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Ciudad Universitaria, Edificio de Ciencias II, Córdoba, Argentina
| | - Verónica E Manzano
- Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Departamento de Química Orgánica, Ciudad Universitaria, Pabellón 2, C1428EHA, Buenos Aires, Argentina. .,Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)-UBA, Centro de Investigación en Hidratos de Carbono (CIHIDECAR)
| | - Oscar Varela
- Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Departamento de Química Orgánica, Ciudad Universitaria, Pabellón 2, C1428EHA, Buenos Aires, Argentina. .,Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)-UBA, Centro de Investigación en Hidratos de Carbono (CIHIDECAR)
| |
Collapse
|
4
|
Cano ME, Jara WE, Cagnoni AJ, Brizzio E, Strumia MC, Repetto E, Uhrig ML. The disulfide bond as a key motif for the construction of multivalent glycoclusters. NEW J CHEM 2022. [DOI: 10.1039/d2nj03071c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
S-Glycosylated dendrons having a thioacetate group in their focal points led to multivalent glycoclusters by spontaneous O2-oxidation of sulfides.
Collapse
Affiliation(s)
- María Emilia Cano
- Departamento de Química Orgánica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pabellón 2, C1428EGA Buenos Aires, Argentina
- CONICET-Universidad de Buenos Aires, Centro de Investigaciones en Hidratos de Carbono (CIHIDECAR), C1428EGA Buenos Aires, Argentina
| | - Walter Emiliano Jara
- Departamento de Química Orgánica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pabellón 2, C1428EGA Buenos Aires, Argentina
- CONICET-Universidad de Buenos Aires, Centro de Investigaciones en Hidratos de Carbono (CIHIDECAR), C1428EGA Buenos Aires, Argentina
| | - Alejandro J. Cagnoni
- Laboratorio de Glicómica Funcional y Molecular, Instituto de Biología y Medicina Experimental, Consejo Nacional de Investigaciones Científicas y Técnicas, C1428ADN Buenos Aires, Argentina
| | - Emmanuel Brizzio
- Departamento de Química Orgánica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pabellón 2, C1428EGA Buenos Aires, Argentina
- CONICET-Universidad de Buenos Aires, Centro de Investigaciones en Hidratos de Carbono (CIHIDECAR), C1428EGA Buenos Aires, Argentina
| | - Miriam C. Strumia
- Universidad Nacional de Córdoba, Facultad de Ciencias Químicas, Departamento de Química Orgánica. Av. Haya de la Torre esq. Av. Medina Allende, Córdoba, X5000HUA, Argentina
- CONICET, Instituto de Investigación y Desarrollo en Ingeniería de Procesos y Química Aplicada (IPQA). Av. Velez Sárfield 1611, Córdoba, X5000HUA, Argentina
| | - Evangelina Repetto
- Departamento de Química Orgánica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pabellón 2, C1428EGA Buenos Aires, Argentina
- CONICET-Universidad de Buenos Aires, Centro de Investigaciones en Hidratos de Carbono (CIHIDECAR), C1428EGA Buenos Aires, Argentina
| | - María Laura Uhrig
- Departamento de Química Orgánica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pabellón 2, C1428EGA Buenos Aires, Argentina
- CONICET-Universidad de Buenos Aires, Centro de Investigaciones en Hidratos de Carbono (CIHIDECAR), C1428EGA Buenos Aires, Argentina
| |
Collapse
|
5
|
Dada L, Manzano VE, Varela O. Benzyl Glycosides of Thiodisaccharides. Influence of C‐2 Configuration of the Reducing End and Substitution at Benzyl on the Inhibition of the
E. coli
β‐Galactosidase. ChemistrySelect 2021. [DOI: 10.1002/slct.202103461] [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)
- Lucas Dada
- Universidad de Buenos Aires Facultad de Ciencias Exactas y Naturales Departamento de Química Orgánica. Ciudad Universitaria, Pabellón 2 C1428EHA Buenos Aires Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)-UBA, Centro de Investigación en Hidratos de Carbono (CIHIDECAR)
| | - Verónica E. Manzano
- Universidad de Buenos Aires Facultad de Ciencias Exactas y Naturales Departamento de Química Orgánica. Ciudad Universitaria, Pabellón 2 C1428EHA Buenos Aires Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)-UBA, Centro de Investigación en Hidratos de Carbono (CIHIDECAR)
| | - Oscar Varela
- Universidad de Buenos Aires Facultad de Ciencias Exactas y Naturales Departamento de Química Orgánica. Ciudad Universitaria, Pabellón 2 C1428EHA Buenos Aires Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)-UBA, Centro de Investigación en Hidratos de Carbono (CIHIDECAR)
| |
Collapse
|
6
|
Cristófalo AE, Cano ME, Uhrig ML. Synthesis of Thiodisaccharides Bearing N-Acetylhexosamine Residues: Challenges, Achievements and Perspectives. CHEM REC 2021; 21:2808-2836. [PMID: 34170606 DOI: 10.1002/tcr.202100146] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Revised: 06/09/2021] [Accepted: 06/10/2021] [Indexed: 01/06/2023]
Abstract
Carbohydrate-protein interactions are involved in a myriad of biological processes. Thus, glycomimetics have arisen as one of the most promising synthetic targets to that end. Within the broad variety of glycomimetics, thiodisaccharides have proven to be excellent tools to study these processes, and even more, some of them unveiled interesting biological activities. This review brings together research made on the introduction of N-acetylhexosamine residues into thiodisaccharides to date, passing through classic substitution (as SN 2, thioglycosylation and ring-opening reactions) and addition (as thiol-ene coupling and Michael-type additions) reactions. Recent and interesting developments regarding addition reactions to vinyl azides, cross-coupling reactions and novel chemoenzymatic methods are also discussed.
Collapse
Affiliation(s)
- Alejandro E Cristófalo
- Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales., Departamento de Química Orgánica, Intendente Güiraldes, 2160 (C1428EHA), Buenos Aires, Argentina.,CONICET - Universidad de Buenos Aires, Centro de Investigaciones en Hidratos de Carbono (CIHIDECAR), Buenos Aires, Argentina
| | - María Emilia Cano
- Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales., Departamento de Química Orgánica, Intendente Güiraldes, 2160 (C1428EHA), Buenos Aires, Argentina.,CONICET - Universidad de Buenos Aires, Centro de Investigaciones en Hidratos de Carbono (CIHIDECAR), Buenos Aires, Argentina
| | - María Laura Uhrig
- Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales., Departamento de Química Orgánica, Intendente Güiraldes, 2160 (C1428EHA), Buenos Aires, Argentina.,CONICET - Universidad de Buenos Aires, Centro de Investigaciones en Hidratos de Carbono (CIHIDECAR), Buenos Aires, Argentina
| |
Collapse
|
7
|
Cristófalo AE, Nieto PM, Uhrig ML. Synthesis of (1→3) Thiodisaccharides of GlcNAc and the Serendipitous Formation of 2,3-Dideoxy-(1→2)-thiodisaccharides through a Vinyl Azide Intermediate. J Org Chem 2019; 85:306-317. [PMID: 31802661 DOI: 10.1021/acs.joc.9b01883] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The syntheses of β-S-GlcA(1→3)GlcNAc and β-S-Gal(1→3)GlcNAc thiodisaccharides, which can be considered mimetics of the repeating units of hyaluronan and keratan respectively, were achieved by SN2 displacement of a triflate group allocated at the 3-position of a convenient 2-azido-4,6-O-benzylidene-2-deoxy-β-d-allopyranose precursor by the corresponding nucleophilic suitable protected thioaldoses derived from glucuronic acid (GlcA) and galactose (Gal). The study of the reaction led to the finding that the vinyl azide formed by competitive E2 reaction of the mentioned triflate was an interesting precursor of a new kind of 2,3-dideoxy-2-azido-(1→2) thiodisaccharides through an addition reaction. Determination of the stereochemistry of the new stereocenter at C-2 was achieved by NOESY experiments. Final protecting group manipulation of the (1→3) thiodisaccharides led to a family of derivatives that could be used as building blocks for the synthesis of complex glycomimetics.
Collapse
Affiliation(s)
- Alejandro Ezequiel Cristófalo
- Departamento de Química Orgánica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires , Ciudad Universitaria , Pabellón 2, C1428EGA Buenos Aires , Argentina.,CONICET-Universidad de Buenos Aires, Centro de Investigaciones en Hidratos de Carbono (CIHIDECAR) , C1428EGA Buenos Aires , Argentina
| | - Pedro M Nieto
- Glycosystems Laboratory, Instituto de Investigaciones Químicas (IIQ), cicCartuja , CSIC and Universidad de Sevilla , 41092 Sevilla , España
| | - María Laura Uhrig
- Departamento de Química Orgánica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires , Ciudad Universitaria , Pabellón 2, C1428EGA Buenos Aires , Argentina.,CONICET-Universidad de Buenos Aires, Centro de Investigaciones en Hidratos de Carbono (CIHIDECAR) , C1428EGA Buenos Aires , Argentina
| |
Collapse
|
8
|
Synthesis of enantiomerically pure enones (2-benzyloxypyran-3-ones) derived from pentoses. Carbohydr Res 2019; 479:31-40. [DOI: 10.1016/j.carres.2019.05.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2019] [Revised: 05/02/2019] [Accepted: 05/15/2019] [Indexed: 01/19/2023]
|
9
|
Dada L, Manzano VE, Varela O. Design and Synthesis of 2-Acetamido-2,3-dideoxythiodisaccharides via Diastereoselective Conjugate Addition to Sugar Enone O-Acetyl Oximes. Galactosidase Inhibition Studies. Org Lett 2018; 20:6225-6228. [DOI: 10.1021/acs.orglett.8b02692] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Lucas Dada
- Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Departamento de Química Orgánica, Pabellón 2, Ciudad Universitaria, C1428EHA Buenos Aires, Argentina
- CONICET-UBA, Centro de Investigación en Hidratos de Carbono (CIHIDECAR), C1425FQB Buenos Aires, Argentina
| | - Verónica E. Manzano
- Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Departamento de Química Orgánica, Pabellón 2, Ciudad Universitaria, C1428EHA Buenos Aires, Argentina
- CONICET-UBA, Centro de Investigación en Hidratos de Carbono (CIHIDECAR), C1425FQB Buenos Aires, Argentina
| | - Oscar Varela
- Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Departamento de Química Orgánica, Pabellón 2, Ciudad Universitaria, C1428EHA Buenos Aires, Argentina
- CONICET-UBA, Centro de Investigación en Hidratos de Carbono (CIHIDECAR), C1425FQB Buenos Aires, Argentina
| |
Collapse
|
10
|
Gudz GP, Shermolovich YG, Rusanov EB, Ryabitskii AB. Synthesis of fluorinated vinyl O- and S-glycosides and carbohydrate-based vinyl ethers. J Carbohydr Chem 2017. [DOI: 10.1080/07328303.2017.1397681] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Ganna P. Gudz
- Department of the Chemistry of Sulfurorganic Compounds, National Academy of Sciences of Ukraine, 5, Murmanska st., Kyiv, Ukraine
| | - Yuriy G. Shermolovich
- Department of the Chemistry of Sulfurorganic Compounds, National Academy of Sciences of Ukraine, 5, Murmanska st., Kyiv, Ukraine
| | - Eduard B. Rusanov
- Department of the Chemistry of Sulfurorganic Compounds, National Academy of Sciences of Ukraine, 5, Murmanska st., Kyiv, Ukraine
| | | |
Collapse
|
11
|
Lo Fiego MJ, Marino C, Varela O. Synthesis of galactofuranosyl-(1 → 5)-thiodisaccharide glycomimetics as inhibitors of a β-d-galactofuranosidase. RSC Adv 2015. [DOI: 10.1039/c5ra06899a] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
Description of the synthesis, molecular modeling and inhibitory properties of furanosyl thiodisaccharides that are mimetics of the motif β-d-Galf-(1 → 5)-d-Galf, found in glycoconjugates of pathogenic microorganisms.
Collapse
Affiliation(s)
- Marcos J. Lo Fiego
- CIHIDECAR-CONICET-UBA
- Departamento de Química Orgánica
- Facultad de Ciencias Exactas y Naturales
- Universidad de Buenos Aires
- Argentina
| | - Carla Marino
- CIHIDECAR-CONICET-UBA
- Departamento de Química Orgánica
- Facultad de Ciencias Exactas y Naturales
- Universidad de Buenos Aires
- Argentina
| | - Oscar Varela
- CIHIDECAR-CONICET-UBA
- Departamento de Química Orgánica
- Facultad de Ciencias Exactas y Naturales
- Universidad de Buenos Aires
- Argentina
| |
Collapse
|
12
|
Colomer JP, Manzano VE, Varela O. Synthesis of Thiodisaccharide Sulfoxides and Sulfones - Determination of the Configuration of the Sulfur Stereocentre. European J Org Chem 2013. [DOI: 10.1002/ejoc.201301037] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
13
|
Repetto E, Marino C, Varela O. Synthesis of the (1→6)-linked thiodisaccharide of galactofuranose: Inhibitory activity against a β-galactofuranosidase. Bioorg Med Chem 2013; 21:3327-33. [DOI: 10.1016/j.bmc.2013.02.057] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2012] [Revised: 02/08/2013] [Accepted: 02/18/2013] [Indexed: 11/29/2022]
|
14
|
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]
|
15
|
Synthesis and biological activities of novel isoxazoline-linked pseudodisaccharide derivatives. Carbohydr Res 2012; 351:7-16. [DOI: 10.1016/j.carres.2011.11.025] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2011] [Revised: 11/25/2011] [Accepted: 11/27/2011] [Indexed: 11/21/2022]
|
16
|
Manzano VE, Uhrig ML, Varela O. Convenient synthesis of 4-thiolactose, 3,4-dithiolactose and related thiooligosaccharides and disulfides. Inhibitory activity of the glycomimetics against a β-galactosidase. Org Biomol Chem 2012; 10:8884-94. [DOI: 10.1039/c2ob26388b] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
|
17
|
Repetto E, Manzano VE, Uhrig ML, Varela O. Synthesis of Branched Dithiotrisaccharides via Ring-Opening Reaction of Sugar Thiiranes. J Org Chem 2011; 77:253-65. [DOI: 10.1021/jo2018685] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Evangelina Repetto
- CIHIDECAR-CONICET, Departamento de Química Orgánica,
Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Argentina
| | - Verónica E. Manzano
- CIHIDECAR-CONICET, Departamento de Química Orgánica,
Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Argentina
| | - María Laura Uhrig
- CIHIDECAR-CONICET, Departamento de Química Orgánica,
Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Argentina
| | - Oscar Varela
- CIHIDECAR-CONICET, Departamento de Química Orgánica,
Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Argentina
| |
Collapse
|
18
|
Li YP, Li ZJ, Meng XB. Highly diastereoselective conjugate addition of nitroalkanes to α,β-unsaturated sugar lactones for the efficient synthesis of chiral 2-pyrrolidones. Carbohydr Res 2011; 346:1801-8. [DOI: 10.1016/j.carres.2011.06.010] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2011] [Revised: 05/28/2011] [Accepted: 06/08/2011] [Indexed: 11/26/2022]
|
19
|
Repetto E, Marino C, Laura Uhrig M, Varela O. Thiodisaccharides with galactofuranose or arabinofuranose as terminal units: Synthesis and inhibitory activity of an exo β-d-galactofuranosidase. Bioorg Med Chem 2009; 17:2703-11. [DOI: 10.1016/j.bmc.2009.02.045] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2008] [Revised: 02/18/2009] [Accepted: 02/20/2009] [Indexed: 10/21/2022]
|
20
|
Manzano VE, Uhrig ML, Varela O. Straightforward synthesis of thiodisaccharides by ring-opening of sugar epoxides. J Org Chem 2008; 73:7224-35. [PMID: 18717587 DOI: 10.1021/jo8012397] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
3,4-Anhydro hexopyranosides have been prepared by diastereoselective epoxidation of derivatives of 2-propyl 3,4-dideoxy-alpha-D-erythro-hex-3-enopyranoside (5), selectively protected at HO-2 and HO-6. The allylic group at C-2, in 5 and derivatives, plays a critical role in the facial selectivity of the epoxidation reaction. Thus, the free HO-2 in 3 (the 6-O-acetyl derivative of 5) directs the attack of m-chloroperbenzoic acid from the more hindered alpha face of the molecule to give 2-propyl 6-O-acetyl-3,4-anhydro-alpha-D-allopyranoside (7) accompanied by the beta epoxide 6 as a very minor product. Reverse diastereoselectivity has been obtained when the HO-2 in 3 was substituted by a bulky tert-butyldimethylsilyl (TBS) group. In this case, the major isomer was the 2-O-TBS derivative of 6 (alpha-D-galacto configuration). The ring-opening of sugar epoxides by nucleophilic per-O-acetyl-1-thio-beta-D-glucopyranose (11) was employed as a convenient approach to the synthesis of (1-->3)- and (1-->4)-thiodisaccharides. For example, ring-opening of the oxirane 7 by 11 led to the expected regioisomeric per-O-acetyl thiodisaccharides beta-D-Glc-S-(1-->3)-4-thio-alpha-D-Glc-O-iPr (12) and beta-D-Glc-S-(1-->4)-4-thio-alpha-D-Gul-O-iPr (13). Regioselectivity in the construction of the (1-->4)-thioglycosidic linkage could be achieved by hindering C-3 of the 3,4-anhydro sugar with a bulky silyloxy group at the vicinal C-2. For instance, coupling of the 2-O-TBS derivative of 7 with 11 led regioselectively to the protected thiodisaccharide beta-D-Glc-S-(1-->4)-4-thio-alpha-D-Glc-O-iPr (27). The utility of the approach was demonstrated through the synthesis of sulfur-linked analogues of naturally occurring (laminarabiose and cellobiose) and non-natural disaccharides (i.e., beta-D-Glc-(1-->4)-alpha-D-Gul).
Collapse
Affiliation(s)
- Verónica E Manzano
- CIHIDECAR-CONICET, Departamento de Química Orgánica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Argentina
| | | | | |
Collapse
|