1
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Nevrlka F, Bědroň A, Valenta M, Tranová L, Stýskala J. Study of Direct N7 Regioselective tert-Alkylation of 6-Substituted Purines and Their Modification at Position C6 through O, S, N, and C Substituents. ACS OMEGA 2024; 9:17368-17378. [PMID: 38645315 PMCID: PMC11024948 DOI: 10.1021/acsomega.4c00068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/03/2024] [Revised: 02/26/2024] [Accepted: 03/27/2024] [Indexed: 04/23/2024]
Abstract
A new N7 direct regioselective method allowing the introduction of tert-alkyl groups into appropriate 6-substituted purine derivatives is developed. This method is based on a reaction of N-trimethylsilylated purines with a tert-alkyl halide using SnCl4 as a catalyst. In this work, we study the structure and optimal reaction conditions leading to the N7 isomer and in some cases also to the N9 isomer. The main goal is devoted to preparing 7-(tert-butyl)-6-chloropurine as a suitable compound for other purine transformations. The stability of the tert-butyl group at the N7 position is tested for classic model reactions, leading to the preparation of new 6,7-disubstituted purine derivatives, which is also interesting from the point of view of possible biological activity.
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Affiliation(s)
- Filip Nevrlka
- Department of Organic Chemistry, Faculty
of Science, Palacký University, 17. Listopadu 12, 771 46 Olomouc, Czech Republic
| | - Adam Bědroň
- Department of Organic Chemistry, Faculty
of Science, Palacký University, 17. Listopadu 12, 771 46 Olomouc, Czech Republic
| | - Michal Valenta
- Department of Organic Chemistry, Faculty
of Science, Palacký University, 17. Listopadu 12, 771 46 Olomouc, Czech Republic
| | - Lenka Tranová
- Department of Organic Chemistry, Faculty
of Science, Palacký University, 17. Listopadu 12, 771 46 Olomouc, Czech Republic
| | - Jakub Stýskala
- Department of Organic Chemistry, Faculty
of Science, Palacký University, 17. Listopadu 12, 771 46 Olomouc, Czech Republic
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2
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Maria C, Rauter AP. Nucleoside analogues: N-glycosylation methodologies, synthesis of antiviral and antitumor drugs and potential against drug-resistant bacteria and Alzheimer's disease. Carbohydr Res 2023; 532:108889. [PMID: 37517197 DOI: 10.1016/j.carres.2023.108889] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2023] [Revised: 06/19/2023] [Accepted: 06/27/2023] [Indexed: 08/01/2023]
Abstract
Nucleosides have gained significant attention since the discovery of the structure of DNA. Nucleoside analogues may be synthesized through multiple synthetic pathways, however the N-glycosylation of a nucleobase is the most common method. Amongst the different classical N-glycosylation methodologies, the Vorbrüggen glycosylation is the most popular method. This review focuses on the synthesis and therapeutic applications of several FDA approved nucleoside analogues as antiviral and anticancer agents. Moreover, this review also focuses on the potential of these compounds as new antibacterial and anti-Alzheimer's disease agents, offering an overview of the most recent research in these fields.
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Affiliation(s)
- Catarina Maria
- Centro de Química Estrutural, Institute of Molecular Sciences, Faculdade de Ciências, Universidade de Lisboa, 1749-016, Lisboa, Portugal.
| | - Amélia P Rauter
- Centro de Química Estrutural, Institute of Molecular Sciences, Faculdade de Ciências, Universidade de Lisboa, 1749-016, Lisboa, Portugal.
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3
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Kandasamy S, Whitehead GFS, Vitórica-Yrezábal IJ, Gardiner JM. Synthesis and structure of d-glucuronolactone derived carboxamides. Carbohydr Res 2023; 524:108744. [PMID: 36706564 DOI: 10.1016/j.carres.2023.108744] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Revised: 01/10/2023] [Accepted: 01/12/2023] [Indexed: 01/19/2023]
Abstract
5-O-Protected and 1,2-acetonide-protected D-glucurono-6,3-lactone furanosides were converted into novel furano-glucuronamides through treatment with ammonia. Several O3 protections and O5-deprotection routes afford new primary gluconamide derivatives. However, attempted O3-benzylations of O5-protected intermediates led instead to silyl migration (from O5-TDBMS), competitive N-benzylation or reclosure to the lactone are observed as competing processes. This is not seen the using 5-O-PMB protection which the provides the method of choice for obtaining a fully protection-differentiated glucofuranamide. X-ray crystal structures of a fully-protected glucurono-6,3-lactone lactone and a glucuronamide derivatives are reported.
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Affiliation(s)
- Saravanan Kandasamy
- Department of Chemistry, School of Natural Sciences, The University of Manchester, Oxford Road, Manchester, M13 9PL, UK
| | - George F S Whitehead
- Department of Chemistry, School of Natural Sciences, The University of Manchester, Oxford Road, Manchester, M13 9PL, UK
| | - Iñigo J Vitórica-Yrezábal
- Department of Chemistry, School of Natural Sciences, The University of Manchester, Oxford Road, Manchester, M13 9PL, UK
| | - John M Gardiner
- Department of Chemistry, School of Natural Sciences, The University of Manchester, Oxford Road, Manchester, M13 9PL, UK.
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4
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Kanaujiya VK, Tiwari V, Pattanaik K, Sabiah S, Kandasamy J. Synthesis of Glycouronamides by the Transamidation Approach at Room Temperature. ASIAN J ORG CHEM 2022. [DOI: 10.1002/ajoc.202200315] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
| | - Varsha Tiwari
- IIT BHU: Indian Institute of Technology BHU Varanasi Chemistry INDIA
| | | | | | - Jeyakumar Kandasamy
- Indian Institute of Technology (BHU) Chemistry Varanasi 221005 Varanasi INDIA
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5
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Kar SS, Nanda NP, Ravichandiran V, Swain SP. Silane promoted glycosylation and its applications for synthesis of sugar compounds and active pharmaceutical ingredients (APIs). NEW J CHEM 2022. [DOI: 10.1039/d2nj04192h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Silane promoted glycosylation and its applications for preparation of active pharmaceutical ingredients.
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Affiliation(s)
- Sidhartha Sankar Kar
- Department of Pharmaceutical Chemistry, Institute of Pharmacy & Technology, Salipur, Cuttack, 754202, Odisha, India
| | - Nrusingha Prasad Nanda
- Department of Pharmaceutical Chemistry, Institute of Pharmacy & Technology, Salipur, Cuttack, 754202, Odisha, India
| | - V. Ravichandiran
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research, Kolkata, 168, Maniktala Main Road, Kolkata, 700054, India
| | - Sharada Prasanna Swain
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research, Kolkata, 168, Maniktala Main Road, Kolkata, 700054, India
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6
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Lopes JPB, Silva L, Lüdtke DS. An overview on the synthesis of carbohydrate-based molecules with biological activity related to neurodegenerative diseases. RSC Med Chem 2021; 12:2001-2015. [PMID: 35028560 PMCID: PMC8672812 DOI: 10.1039/d1md00217a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2021] [Accepted: 09/07/2021] [Indexed: 01/18/2023] Open
Abstract
In the context of the search for multitarget drugs with improved efficacy against neurodegenerative disorders, carbohydrate derivatives have emerged as promising candidates for Alzheimer's therapy. Herein we describe the synthesis and biological evaluation of several classes of sugar-based compounds, where most of them contain heterocyclic aromatic moieties that bear known biological properties and high affinity for the cholinesterase active site. This general idea led to the synthesis of compounds with high inhibitory potency against acetylcholinesterase (AChE) and butyrylcholinesterase (BuChE), enzymatic selectivity and combined properties such as antioxidant and neuroprotection, in addition to the absence of toxicity.
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Affiliation(s)
- João Paulo B Lopes
- Instituto de Química, Universidade Federal do Rio Grande do Sul Av. Bento, Gonçalves 9500, Campus do Vale 91501-970 Porto Alegre RS Brazil
| | - Luana Silva
- Instituto de Química, Universidade Federal do Rio Grande do Sul Av. Bento, Gonçalves 9500, Campus do Vale 91501-970 Porto Alegre RS Brazil
| | - Diogo S Lüdtke
- Instituto de Química, Universidade Federal do Rio Grande do Sul Av. Bento, Gonçalves 9500, Campus do Vale 91501-970 Porto Alegre RS Brazil
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7
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Tranová L, Stýskala J. Study of the N7 Regioselective Glycosylation of 6-Chloropurine and 2,6-Dichloropurine with Tin and Titanium Tetrachloride. J Org Chem 2021; 86:13265-13275. [PMID: 34528791 DOI: 10.1021/acs.joc.1c01186] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
6-Chloropurine and 2,6-dichloropurine were regioselectively glycosylated at position 7 to give the corresponding peracetylated N7-nucleosides, which can be suitable for other purine transformations. In this work, we study the distribution of N7/N9-isomers produced via the Vorbrüggen method under different conditions, using an N-trimethylsilylated purine derivative and SnCl4 or TiCl4 as a catalyst. The main effort is devoted to reversing the disadvantageous predominant selectivity of most glycosylation reactions at the N9 position and thus to determining conditions that maximize the regioselectivity of glycosylation toward the desired N7-isomer.
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Affiliation(s)
- Lenka Tranová
- Department of Organic Chemistry, Faculty of Science, Palacký University, 17. listopadu 1192/12, 771 46 Olomouc, Czech Republic
| | - Jakub Stýskala
- Department of Organic Chemistry, Faculty of Science, Palacký University, 17. listopadu 1192/12, 771 46 Olomouc, Czech Republic
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8
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Fortuna A, Costa PJ, Piedade MFM, Conceição Oliveira M, Xavier NM. Synthesis of Triazole-Containing Furanosyl Nucleoside Analogues and Their Phosphate, Phosphoramidate or Phoshonate Derivatives as Potential Sugar Diphosphate or Nucleotide Mimetics. Chempluschem 2020; 85:1676-1691. [PMID: 32757384 DOI: 10.1002/cplu.202000424] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2020] [Revised: 07/16/2020] [Indexed: 12/21/2022]
Abstract
The synthesis of stable and potentially bioactive xylofuranosyl nucleoside analogues and potential sugar diphosphate or nucleotide mimetics comprising a 1,2,3-triazole moiety is reported. 3'-O-Methyl-branched N-benzyltriazole isonucleosides were accessed in 5-7 steps and 42-54 % overall yields using a Cu(I)-catalyzed cycloaddition of 3-O-propargyl-1,2-O-isopropylidene-α-D-xylofuranose with benzyl azide as key step. Related isonucleotides were obtained by 5-O-phosphorylation of acetonide-protected 3-O-propargyl xylofuranose and further "click" cycloaddition or by Staudinger-phosphite reaction of a 5-azido N-benzyltriazole isonucleoside. Hydroxy-, amino- or bromomethyl triazole 5'-isonucleosides were synthesized by thermal cycloaddition of 5-azido 3-O-benzyl/dodecyl xylofuranoses with propargyl alcohol, propargylamine or propargyl bromide. Better yields (82-85 %) were obtained when using propargyl alcohol and a high 1,4-regioselectivity was attained with propargyl bromide. Further O/N-phosphorylation or Arbuzov reaction led to (triazolyl)methyl phosphates, phosphoramidates or phosphonates. The latter were converted into uracil nucleoside 5'-(triazolyl)methyl phosphonates as prospective nucleoside diphosphate mimetics.
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Affiliation(s)
- Andreia Fortuna
- Centro de Química Estrutural, Faculdade de Ciências, Universidade de Lisboa, Ed. C8, 5° Piso, Campo Grande, 1749-016, Lisboa, Portugal.,University of Lisboa, Faculty of Sciences, BioISI - Biosystems & Integrative Sciences Institute, Campo Grande, C8 bdg, 1749-016, Lisboa, Portugal
| | - Paulo J Costa
- University of Lisboa, Faculty of Sciences, BioISI - Biosystems & Integrative Sciences Institute, Campo Grande, C8 bdg, 1749-016, Lisboa, Portugal
| | - M Fátima M Piedade
- Centro de Química Estrutural, Faculdade de Ciências, Universidade de Lisboa, Ed. C8, 5° Piso, Campo Grande, 1749-016, Lisboa, Portugal.,Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001, Lisboa, Portugal
| | - M Conceição Oliveira
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001, Lisboa, Portugal
| | - Nuno M Xavier
- Centro de Química Estrutural, Faculdade de Ciências, Universidade de Lisboa, Ed. C8, 5° Piso, Campo Grande, 1749-016, Lisboa, Portugal
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9
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Ahmed A, Rasool F, Singh G, Katoch M, Mukherjee D. Synthesis and Conformational Analysis of 2- O
-Silyl Protected Nucleosides from Unprotected Nucleobases and Sugar Epoxides. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000650] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Ajaz Ahmed
- Natural Product Chemistry Division; Indian Institute of Integrative Medicine (IIIM); Jammu India
- Academy of Scientific and Innovative Research (AcSIR-IIIM); 180001 Jammu India
| | - Faheem Rasool
- Natural Product Chemistry Division; Indian Institute of Integrative Medicine (IIIM); Jammu India
- Academy of Scientific and Innovative Research (AcSIR-IIIM); 180001 Jammu India
| | - Gurpreet Singh
- Academy of Scientific and Innovative Research (AcSIR-IIIM); 180001 Jammu India
- Microbial Biotechnology Division; Indian Institute of Integrative Medicine (IIIM); Jammu India
| | - Meenu Katoch
- Academy of Scientific and Innovative Research (AcSIR-IIIM); 180001 Jammu India
- Microbial Biotechnology Division; Indian Institute of Integrative Medicine (IIIM); Jammu India
| | - Debaraj Mukherjee
- Natural Product Chemistry Division; Indian Institute of Integrative Medicine (IIIM); Jammu India
- Academy of Scientific and Innovative Research (AcSIR-IIIM); 180001 Jammu India
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10
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Kang WJ, Pan HX, Wang S, Yu B, Hua H, Tang GL. Identification of the Amipurimycin Gene Cluster Yields Insight into the Biosynthesis of C9 Sugar Nucleoside Antibiotics. Org Lett 2019; 21:3148-3152. [PMID: 30990701 DOI: 10.1021/acs.orglett.9b00840] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Feeding studies indicate a possible synthetic pattern for the N-terminal cis-aminocyclopentane carboxylic acid (ACPC) and suggest an unusual source of the high-carbon sugar skeleton of amipurimycin (APM). The biosynthetic gene cluster of APM was identified and confirmed by in vivo experiments. A C9 core intermediate was discovered from null mutants of ACPC pathway, and an ATP-grasp enzyme (ApmA8) was reconstituted in vitro for ACPC loading. Our observations allow a first proposal of the APM biosynthetic pathway.
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Affiliation(s)
- Wen-Jia Kang
- Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education , Shenyang Pharmaceutical University , Shenyang 110016 , China
| | - Hai-Xue Pan
- State Key Laboratory of Bio-organic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis , Shanghai Institute of Organic Chemistry , University of Chinese Academy of Sciences (CAS), CAS, Shanghai 200032 , China
| | - Shengyang Wang
- State Key Laboratory of Bio-organic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis , Shanghai Institute of Organic Chemistry , University of Chinese Academy of Sciences (CAS), CAS, Shanghai 200032 , China
| | - Biao Yu
- State Key Laboratory of Bio-organic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis , Shanghai Institute of Organic Chemistry , University of Chinese Academy of Sciences (CAS), CAS, Shanghai 200032 , China
| | - Huiming Hua
- Key Laboratory of Structure-Based Drug Design & Discovery, Ministry of Education , Shenyang Pharmaceutical University , Shenyang 110016 , China
| | - Gong-Li Tang
- State Key Laboratory of Bio-organic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis , Shanghai Institute of Organic Chemistry , University of Chinese Academy of Sciences (CAS), CAS, Shanghai 200032 , China
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11
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Eldeab HA. Ecofriendly microwave assisted synthesis of some new pyridine glycosides. NUCLEOSIDES NUCLEOTIDES & NUCLEIC ACIDS 2019; 38:509-520. [PMID: 30663490 DOI: 10.1080/15257770.2018.1562075] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
An efficient, mild and rapid procedure was employed to prepare a novel series of pyridine glycosides. The protocol allows the reaction of 2-pyridone with 1,2,3,4,6-penta-O-acetyl-α-D-glucopyranose under solvent-free microwave-assisted synthesis using different solid supports. Silica gel has been found to be an efficient and environmentally friendly promoter. Structures of the new products were confirmed based on their elemental analyses and spectral data (LC-MS/MS, IR, UV, 1D- and 2D-NMR).
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Affiliation(s)
- Hany A Eldeab
- a Department of Pharmaceutical Chemistry , College of Pharmacy, Taif University , Taif , Saudi Arabia
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12
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Design, synthesis, cholinesterase inhibition and molecular modelling study of novel tacrine hybrids with carbohydrate derivatives. Bioorg Med Chem 2018; 26:5566-5577. [DOI: 10.1016/j.bmc.2018.10.003] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2018] [Revised: 10/05/2018] [Accepted: 10/07/2018] [Indexed: 02/03/2023]
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13
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Gonçalves-Pereira R, Pereira MP, Serra SG, Loesche A, Csuk R, Silvestre S, Costa PJ, Oliveira MC, Xavier NM. Furanosyl Nucleoside Analogues Embodying Triazole or Theobromine Units as Potential Lead Molecules for Alzheimer's Disease. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800245] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Rita Gonçalves-Pereira
- Centro de Química e Bioquímica; Faculdade de Ciências; Universidade de Lisboa; Ed. C8, 5° Piso, Campo Grande 1749-016 Lisboa Portugal
- Centro de Química Estrutural; Faculdade de Ciências; Universidade de Lisboa; Lisboa Portugal
| | - Margarida P. Pereira
- Centro de Química e Bioquímica; Faculdade de Ciências; Universidade de Lisboa; Ed. C8, 5° Piso, Campo Grande 1749-016 Lisboa Portugal
| | - Sofia G. Serra
- Centro de Química e Bioquímica; Faculdade de Ciências; Universidade de Lisboa; Ed. C8, 5° Piso, Campo Grande 1749-016 Lisboa Portugal
| | - Anne Loesche
- Bereich Organische Chemie; Martin-Luther-Universität Halle-Wittenberg; Kurt-Mothes-Str. 2 06120 Halle (Saale) Germany
| | - René Csuk
- Bereich Organische Chemie; Martin-Luther-Universität Halle-Wittenberg; Kurt-Mothes-Str. 2 06120 Halle (Saale) Germany
| | - Samuel Silvestre
- Centro de Investigação em Ciências da Saúde (CICS-UBI); Universidade da Beira Interior; Av. Infante D. Henrique 6200-506 Covilhã Portugal
- Centro de Neurociências e Biologia Celular; Universidade de Coimbra.; Rua Larga 3004-517 Coimbra Portugal
| | - Paulo J. Costa
- Centro de Química e Bioquímica; Faculdade de Ciências; Universidade de Lisboa; Ed. C8, 5° Piso, Campo Grande 1749-016 Lisboa Portugal
- BioISI - Biosystems & Integrative Sciences Institute; Universidade de Lisboa; Lisboa Portugal
| | - M. Conceição Oliveira
- Centro de Química Estrutural; Instituto Superior Técnico; Universidade de Lisboa; Av. Rovisco Pais 1049-001 Lisboa Portugal
| | - Nuno M. Xavier
- Centro de Química e Bioquímica; Faculdade de Ciências; Universidade de Lisboa; Ed. C8, 5° Piso, Campo Grande 1749-016 Lisboa Portugal
- Centro de Química Estrutural; Faculdade de Ciências; Universidade de Lisboa; Lisboa Portugal
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14
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Xavier NM, Porcheron A, Batista D, Jorda R, Řezníčková E, Kryštof V, Oliveira MC. Exploitation of new structurally diverse d-glucuronamide-containing N-glycosyl compounds: synthesis and anticancer potential. Org Biomol Chem 2018; 15:4667-4680. [PMID: 28517004 DOI: 10.1039/c7ob00472a] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The synthesis and anticancer evaluation of novel N-glycosyl derivatives containing N-substituted glucuronamide moieties, as nucleoside analogs or as prospective mimetics of glycosyl phosphates or of nucleotides, is reported. These compounds comprise N-anomerically-linked nucleobases or motifs that are surrogates of a phosphate group, such as sulfonamide or phosphoramidate moieties. 1-Sulfonamido glucuronamides containing N-benzyl, N-propargyl or N-dodecyl carboxamide units were synthesized through glycosylation of methanesulfonamide with tetra-O-acetyl glucuronamides. 1-Azido glucuronamides were accessed by microwave-assisted reactions of tetra-O-acetyl glucuronamides with TMSN3 and were further converted into N-glycosylphosphoramidates by treatment with trimethyl phosphite. Potential glucuronamide-based nucleotide mimetics comprising both an anomeric sulfonamide/phosphoramidate group and a benzyltriazolylmethyl amide system at C-5, as nucleobase mimetics, were synthesized via 'click' cycloaddition of N-propargyl glucuronamide derivatives with benzyl azide. N-Dodecyl tetra-O-acetyl glucuronamides were converted into uracil and purine nucleosides via N-glycosylation of the corresponding silylated nucleobases. Biological screening revealed significant antiproliferative activities of the N-dodecyl glucuronamide-containing sulfonamide, phosphoramidate and nucleosides in K562 and MCF-7 cells. The highest effect was exhibited by the N9-linked purine nucleoside in the breast cancer cell MCF-7 with a GI50 value similar to that of clinically used 5-fluorouracil. Immunoblotting and cell cycle analysis of K562 cells treated with the most active compound as well as evaluation of the effect of this nucleoside on the activities of caspases 3 and 7 showed induction of apoptosis as the mechanism of cell death.
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Affiliation(s)
- Nuno M Xavier
- Centro de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, Ed. C8, 5° Piso, Campo Grande, 1749-016 Lisboa, Portugal.
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15
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Mohamed MANM, Abu-Alola LMB, Aljaied NMG. Nucleosides 9: Design and synthesis of new 8-nitro and 8-amino xanthine nucleosides of expected biological activity. NUCLEOSIDES NUCLEOTIDES & NUCLEIC ACIDS 2018; 36:745-756. [PMID: 29239699 DOI: 10.1080/15257770.2017.1395036] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
The coupling reaction of 1,3-dimethylxanthine (theophylline), 3-benzylxanthine and 3-benzyl-1-methylxanthine with 1-O-acetyl-2,3,5-tri-O-benzoyl-β-D-ribofuranose afforded the corresponding protected nucleosides, respectively. Nitration of each of the theophylline and 3-benzy-1-methyllxanthine protected nucleosides yielded the corresponding 8-nitronucleosides derivatives, which were reduced to give the corresponding 8-aminonucleoside derivatives. Debenzoylation of protected nucleosides formed by using methanolic sodium methoxide afforded the corresponding free N-nucleosides, respectively. The structures of products have been elucidated and reported and also some of the products were screened for their antimicrobial activity. Some of tested products showed moderate activity.
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Affiliation(s)
- Mosselhi A N M Mohamed
- a Department of Chemistry, Faculty of Science , Taif University , Saudi Arabia , Taif , KSA.,b Department of Chemistry, Faculty of Science , Cairo University , Giza , Egypt
| | - Laila M B Abu-Alola
- a Department of Chemistry, Faculty of Science , Taif University , Saudi Arabia , Taif , KSA
| | - Nada M G Aljaied
- a Department of Chemistry, Faculty of Science , Taif University , Saudi Arabia , Taif , KSA
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16
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Xavier NM, Gonçalves-Pereira R, Jorda R, Řezníčková E, Kryštof V, Oliveira MC. Synthesis and antiproliferative evaluation of novel azido nucleosides and their phosphoramidate derivatives. PURE APPL CHEM 2017. [DOI: 10.1515/pac-2016-1218] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Abstract:New xylofuranosyl and glucopyranosyl nucleoside phosphoramidates were synthesized as potential mimetics of nucleoside 5′-monophosphates. Their access involved N-glycosylation of uracil and 2-acetamido-6-chloropurine with 5′/6′-azido-1,2-di-O-acetyl glycosyl donors and subsequent Staudinger-phosphite reaction of the resulting azido nucleosides. The coupling of the purine derivative with the pyranosyl donor furnished N9- and N7-linked nucleosides in 1:1 ratio, whereas with the furanosyl donor, the N9-nucleoside was the major regioisomer formed. When using uracil, only 5′/6′-azido N1-linked nucleosides were obtained. The purine 5′/6′-azido nucleosides were converted into corresponding phosphoramidates in good yields. The antiproliferative effects of the nucleoside phosphoramidates and those of the azido counterparts on cancer cells were evaluated. While the nucleoside phosphoramidates did not show significant activities, the purine 5′/6′-azido nucleosides displayed potent effects against K562, MCF-7 and BT474 cell lines. The 5′-azidofuranosyl N9 and N7-linked purine nucleosides exhibited highest activity towards the chronic myeloid leukemia cell line (K562) with GI50 values of 13.6 and 9.7 μM, respectively. Among pyranosyl nucleosides, the N7-linked nucleoside was the most active compound with efficacy towards all cell lines assayed and a highest effect on K562 cells (GI50=6.8 μM). Cell cycle analysis of K562 and MCF-7 cells showed that the most active compounds cause G2/M arrest.
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Affiliation(s)
- Nuno M. Xavier
- Centro de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, Ed. C8, 2/5º Piso, Campo Grande, 1749-016 Lisboa, Portugal
| | - Rita Gonçalves-Pereira
- Centro de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, Ed. C8, 2/5º Piso, Campo Grande, 1749-016 Lisboa, Portugal
| | - Radek Jorda
- Laboratory of Growth Regulators, Centre of the Region Haná for Biotechnological and Agricultural Research, Palacký University and Institute of Experimental Botany AS CR, Šlechtitelů 27, 78371 Olomouc, Czech Republic
| | - Eva Řezníčková
- Laboratory of Growth Regulators, Centre of the Region Haná for Biotechnological and Agricultural Research, Palacký University and Institute of Experimental Botany AS CR, Šlechtitelů 27, 78371 Olomouc, Czech Republic
| | - Vladimír Kryštof
- Laboratory of Growth Regulators, Centre of the Region Haná for Biotechnological and Agricultural Research, Palacký University and Institute of Experimental Botany AS CR, Šlechtitelů 27, 78371 Olomouc, Czech Republic
| | - M. Conceição Oliveira
- Centro de Química Estrutural (CQE), Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
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17
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Liang C, Ju W, Ding S, Sun H, Mao G. Effective Synthesis of Nucleosides Utilizing O-Acetyl-Glycosyl Chlorides as Glycosyl Donors in the Absence of Catalyst: Mechanism Revision and Application to Silyl-Hilbert-Johnson Reaction. Molecules 2017; 22:molecules22010084. [PMID: 28067759 PMCID: PMC6155650 DOI: 10.3390/molecules22010084] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2016] [Revised: 12/10/2016] [Accepted: 12/15/2016] [Indexed: 12/12/2022] Open
Abstract
An effective synthesis of nucleosides using glycosyl chlorides as glycosyl donors in the absence of Lewis acid has been developed. Glycosyl chlorides have been shown to be pivotal intermediates in the classical silyl-Hilbert-Johnson reaction. A possible mechanism that differs from the currently accepted mechanism advanced by Vorbrueggen has been proposed and verified by experiments. In practice, this catalyst-free method provides easy access to Capecitabine in high yield.
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Affiliation(s)
- Chengyuan Liang
- Faculty of Pharmacy, Shaanxi University of Science & Technology, 6 Xuefu Road, Xi'an 710021, China.
| | - Weihui Ju
- Faculty of Pharmacy, Shaanxi University of Science & Technology, 6 Xuefu Road, Xi'an 710021, China.
| | - Shunjun Ding
- Faculty of Pharmacy, Shaanxi University of Science & Technology, 6 Xuefu Road, Xi'an 710021, China.
| | - Han Sun
- Faculty of Pharmacy, Shaanxi University of Science & Technology, 6 Xuefu Road, Xi'an 710021, China.
| | - Gennian Mao
- Faculty of Pharmacy, Shaanxi University of Science & Technology, 6 Xuefu Road, Xi'an 710021, China.
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18
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Lin S, Ashmus RA, Lowary TL. An Oxidation-Amidation Approach for the Synthesis of Glycuronamides. European J Org Chem 2016. [DOI: 10.1002/ejoc.201600239] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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19
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Batista D, Schwarz S, Loesche A, Csuk R, Costa PJ, Oliveira MC, Xavier NM. Synthesis of glucopyranos-6′-yl purine and pyrimidine isonucleosides as potential cholinesterase inhibitors. Access to pyrimidine-linked pseudodisaccharides through Mitsunobu reaction. PURE APPL CHEM 2016. [DOI: 10.1515/pac-2016-0102] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
AbstractThe synthesis of new isonucleosides comprising purine and pyrimidine-derived systems linked to methyl glucopyranosidyl units at C-6 and evaluation of their cholinesterase inhibitory profiles is reported. Their access was based on the Mitsunobu coupling of partially acetylated and benzylated methyl glucopyranosides with purine and pyrimidine derivatives. While the reactions with purines and theobromine proceeded with complete regioselectivity, affording exclusively N9- or N1-linked 6′-isonucleosides, respectively, the use of pyrimidine nucleobases led to N1 and/or N3-glucopyranosid-6′-yl pyrimidines and/or to N1,N3/2-O,4-O-pyrimidine-linked pseudodisaccharides through bis-coupling, depending on the substitution pattern of the sugar precursor and on the nature of the nucleobase. From this series of compounds, four were shown to be effective and selective inhibitors of acetylcholinesterase with inhibition constants in the micromolar concentration range. A tri-O-acetylated N1-glucopyranosid-6′-yl theobromine and a benzylated N1,N3-bis-glucopyranosid-6-yl thymine were the most active molecules with Ki values of 4 μM. A tri-O-benzylated glucopyranosid-6′-yl uracil displayed good and selective inhibition of butyrylcholinesterase (Ki=8.4±1.0 μM), similar to that exhibited by the standard galantamine. Molecular docking simulations, performed with the two most effective acetylcholinesterase inhibitors, showed interactions with key amino acid residues located at the enzyme’s active site gorge, which explain the competitive component of their inhibitory activities.
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Affiliation(s)
- Daniela Batista
- 1Centro de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, Ed. C8, 5° Piso, Campo Grande, 1749-016 Lisboa, Portugal
| | - Stefan Schwarz
- 2Bereich Organische Chemie, Martin-Luther-Universität Halle-Wittenberg, Kurt-Mothes-Str. 2, D-06120 Halle (Saale), Germany
| | - Anne Loesche
- 2Bereich Organische Chemie, Martin-Luther-Universität Halle-Wittenberg, Kurt-Mothes-Str. 2, D-06120 Halle (Saale), Germany
| | - René Csuk
- 2Bereich Organische Chemie, Martin-Luther-Universität Halle-Wittenberg, Kurt-Mothes-Str. 2, D-06120 Halle (Saale), Germany
| | - Paulo J. Costa
- 1Centro de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, Ed. C8, 5° Piso, Campo Grande, 1749-016 Lisboa, Portugal
| | - M. Conceição Oliveira
- 3Centro de Química Estrutural (CQE), Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
| | - Nuno M. Xavier
- 1Centro de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, Ed. C8, 5° Piso, Campo Grande, 1749-016 Lisboa, Portugal
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20
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Dias C, Rauter AP. Carbohydrates and Glycomimetics in Alzheimer's Disease Therapeutics and Diagnosis. CARBOHYDRATES IN DRUG DESIGN AND DISCOVERY 2015. [DOI: 10.1039/9781849739993-00180] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Alzheimer's disease is the most prevalent form of late-life dementia, affecting millions worldwide. The devastating nature of the disease, unsuccessful treatment options and high socio-economic impact has inspired scientists to develop new structures with neuroprotective properties. Although currently available drugs target cholinergic neurotransmission, investigation towards disease-modifying therapies has been growing and carbohydrates have been playing an active role in the latest discoveries. Sugars, as polyfunctional compounds particularly important in biology and widely involved in human health and disease, have great potential to generate bioactive and bioavailable interesting molecules. Herein we discuss the importance of carbohydrates and glycomimetic structures, addressing different aspects of neuroprotection under investigation, targeting amyloid, tau and cholinergic hypotheses. The potential of carbohydrates in diagnosis is also discussed.
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Affiliation(s)
- Catarina Dias
- Centro de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, Campo Grande 1749-016 Lisbon Portugal
| | - Amélia P. Rauter
- Centro de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, Campo Grande 1749-016 Lisbon Portugal
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