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Bonache MC, -Doyagüez EG, Benito-Arenas R, Bonache MA, Jimeno ML, San-Félix A. Skeletal Transformations Observed in the Reaction of a Tricyclic Thymine Nucleoside with Dicarbonyl Compounds. ACS OMEGA 2024; 9:36259-36272. [PMID: 39220522 PMCID: PMC11359620 DOI: 10.1021/acsomega.4c02553] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/15/2024] [Revised: 07/09/2024] [Accepted: 08/02/2024] [Indexed: 09/04/2024]
Abstract
Some intriguing skeletal transformations were observed in the reaction of α-hydroxypyrrolidine thymine nucleoside 2 with different dicarbonyl compounds. In these reactions, unusual ring systems, together with new C-C bonds and stereogenic centers of defined configuration, were formed in a single step. These reactions were initiated by the nucleophilic attack of the NH of the pyrrolidine ring, present on 2, on one of the carbonyl moieties of a dicarbonyl reagent and seem to proceed through an enamine-iminium mechanism. The present methodology is particularly attractive because no catalyst or aggressive conditions are needed. The new polycyclic nucleosides obtained from 2 can be good scaffolds for diversification. In fact, modification and derivatization can be achieved by performing further chemical transformations of the functional groups present in some of them. This may lead to the formation of new highly functionalized nucleosides. Our results show the high synthetic potential of 2 to construct complex systems in an efficient way. On the other hand, the enamine chemistry involved in the particular reactivity of the α-hydroxy pyrrolidine ring present in 2 has no connection with the nucleobase and could be extended to simple glycosides preserving this essential ring system.
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Affiliation(s)
- María-Cruz Bonache
- Instituto
de Química Médica (CSIC), Juan de la Cierva 3, 28006 Madrid, Spain
| | - Elisa G. -Doyagüez
- Centro
de Química Orgánica “Lora-Tamayo” (CSIC), Juan de la Cierva 3, 28006 Madrid, Spain
| | - Raúl Benito-Arenas
- Instituto
de Química Orgánica General (CSIC), Juan de la Cierva 3, 28006 Madrid, Spain
| | - M. Angeles Bonache
- Instituto
de Química Médica (CSIC), Juan de la Cierva 3, 28006 Madrid, Spain
| | - María-Luisa Jimeno
- Centro
de Química Orgánica “Lora-Tamayo” (CSIC), Juan de la Cierva 3, 28006 Madrid, Spain
| | - Ana San-Félix
- Instituto
de Química Médica (CSIC), Juan de la Cierva 3, 28006 Madrid, Spain
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2
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Tachallait H, Bouyahya A, Talha A, Bakri Y, Dakka N, Demange L, Benhida R, Bougrin K. Concise synthesis and antibacterial evaluation of novel 3-(1,4-disubstituted-1,2,3-triazolyl)uridine nucleosides. Arch Pharm (Weinheim) 2018; 351:e1800204. [DOI: 10.1002/ardp.201800204] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2018] [Revised: 09/11/2018] [Accepted: 09/12/2018] [Indexed: 12/12/2022]
Affiliation(s)
- Hamza Tachallait
- Equipe de Chimie des Plantes et de Synthèse Organique et Bioorganique, Faculty of Science, Geophysics, Natural Patrimony and Green Chemistry (GEOPAC) Research Center; Mohammed V University in Rabat; Rabat Morocco
| | - Abdelhakim Bouyahya
- Laboratory of Human Pathology Biology, Faculty of Science; Mohamed V University; Rabat Morocco
| | - Aicha Talha
- Equipe de Chimie des Plantes et de Synthèse Organique et Bioorganique, Faculty of Science, Geophysics, Natural Patrimony and Green Chemistry (GEOPAC) Research Center; Mohammed V University in Rabat; Rabat Morocco
| | - Youssef Bakri
- Laboratory of Human Pathology Biology, Faculty of Science; Mohamed V University; Rabat Morocco
| | - Nadia Dakka
- Laboratory of Human Pathology Biology, Faculty of Science; Mohamed V University; Rabat Morocco
| | - Luc Demange
- Université Côte d'Azur, CNRS; Institut de Chimie de Nice; Nice France
- Département de Chimie, Université Paris Descartes, Sorbonne Paris Cité, UFR des Sciences Pharmaceutiques; UFR Biomédicale des Saints Pères; Paris France
| | - Rachid Benhida
- Université Côte d'Azur, CNRS; Institut de Chimie de Nice; Nice France
- Mohammed VI Polytechnic University; Benguerir Morocco
| | - Khalid Bougrin
- Equipe de Chimie des Plantes et de Synthèse Organique et Bioorganique, Faculty of Science, Geophysics, Natural Patrimony and Green Chemistry (GEOPAC) Research Center; Mohammed V University in Rabat; Rabat Morocco
- Mohammed VI Polytechnic University; Benguerir Morocco
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3
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Bera S, Chatterjee B, Mondal D. Construction of quaternary stereocentres on carbohydrate scaffolds. RSC Adv 2016. [DOI: 10.1039/c6ra13898e] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
This review describes a glimpse of the various strategies for constructing stereo-defined quaternary centres in densely functionalised carbohydrates moiety of structurally intriguing and biologically potent natural products and building blocks.
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Affiliation(s)
- Smritilekha Bera
- School of Chemical Sciences
- Central University of Gujarat
- Gandhinagar-382030
- India
| | | | - Dhananjoy Mondal
- School of Chemical Sciences
- Central University of Gujarat
- Gandhinagar-382030
- India
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4
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Dushing MP, Ramana C. Target cum flexibility: synthesis of C(3′)-spiroannulated nucleosides. Tetrahedron Lett 2011. [DOI: 10.1016/j.tetlet.2011.06.100] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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5
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Bonache MC, Cordeiro A, Quesada E, Vanstreels E, Daelemans D, Camarasa MJ, Balzarini J, San-Félix A. Selective inhibition of Human Immunodeficiency Virus type 1 (HIV-1) by a novel family of tricyclic nucleosides. Antiviral Res 2011; 92:37-44. [PMID: 21600933 DOI: 10.1016/j.antiviral.2011.05.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2011] [Revised: 04/27/2011] [Accepted: 05/05/2011] [Indexed: 10/18/2022]
Abstract
Nucleoside 1, with an unusual tricyclic carbohydrate moiety, specifically inhibits HIV-1 replication while being inactive against HIV-2 or other (retro) viruses. In an attempt to increase the inhibitory efficacy against HIV-1, and to further explore the structural features required for anti-HIV-1 activity, different types of modifications have been carried out on this prototype compound. These include substitution of the ethoxy group at the C-4″ position by alkoxy groups of different length, branching, conformational freedom or functionalization. In addition, the 4″-ethoxy group has been removed or substituted by other functional groups. The role of the tert-butyldimethylsilyl (TBDMS) group at the 2' position has also been studied by preparing the corresponding 2'-deprotected derivative or by replacing it by other silyl (tert-hexyldimethylsilyl) or acyl (acetyl) moieties. Finally, the thymine of the prototype compound has been replaced by N-3-methylthymine, uracil or thiophenyl. Some of these compounds were endowed with a 6- to 7-fold higher selectivity than the prototype 1. The tricyclic nucleosides here described represent a novel type of selective anti HIV-1 inhibitors, targeted at the HIV-1-encoded reverse transcriptase.
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Affiliation(s)
- María-Cruz Bonache
- Instituto de Química Médica (CSIC), Juan de la Cierva 3, 28006 Madrid, Spain
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6
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Bonache MC, Cordeiro A, Carrero P, Quesada E, Camarasa MJ, Jimeno ML, San-Félix A. One-pot synthesis of polycyclic nucleosides with unusual molecular skeletons. J Org Chem 2009; 74:9071-81. [PMID: 19888745 DOI: 10.1021/jo9019144] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
An alpha hydroxy pyrrolidine tricyclic nucleoside 3 and its spontaneous reaction with acetone is described. In this transformation highly functionalized polycyclic nucleosides with rather unusual molecular skeletons are formed in a complete regio- and stereoselective way. The reaction involves the formation of three new bonds, two of them novel carbon-carbon bonds, in a one-pot way. An enamine-iminium mechanism with participation of carbinolamine, iminium ion, and enamine intermediates is proposed as a plausible explanation for this transformation. The scope of the reaction is briefly studied concluding that the nature of the ketone (R(1)COR(2)) is critical for the initial attack of the NH to the carbonyl group.
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Affiliation(s)
- María-Cruz Bonache
- Instituto de Química Médica (CSIC), Juan de la Cierva 3, 28006 Madrid, Spain
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7
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Elhalem E, Comin MJ, Rodriguez JB. Synthesis of Conformationally Locked Carbocyclic Nucleosides Built on a Thiabicyclo[3.1.0]hexane System as a Pseudosugar Surrogate. European J Org Chem 2006. [DOI: 10.1002/ejoc.200600488] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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8
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Cordeiro A, Quesada E, Bonache MC, Velazquez S, Camarasa MJ, San-Félix A. A Cyclic Enamine Derived from 1,2-O-Isopropylidene-α-d-xylofuranose As a Novel Carbohydrate Intermediate To Achieve Skeletal Diversity. J Org Chem 2006; 71:7224-35. [PMID: 16958515 DOI: 10.1021/jo0609531] [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] [Indexed: 11/28/2022]
Abstract
The commercially available carbohydrate 1,2-O-isopropylidene-alpha-D-xylofuranose was efficiently transformed into the high-added-value synthetic scaffold 8. The transformation requires the synthesis of the 5-O-tosyl derivative 7 and its subsequent intramolecular cyclization under basic conditions to give the cyclic enamine 8. Reaction of 8 with O-, N-, S-, and C-nucleophiles and amino acids allowed its efficient transformation (one-step, high yields, and easy purifications) into fused cyclic sugar derivatives with rather unusual molecular skeletons in a completely regio- and stereoselective manner. The characteristics of the sugar derivative 8 established here, high reactivity, synthetic accessibility, and the potential for conversion into a vast collection of products by the action of different nucleophiles, indicate that it will prove to be a useful chiral intermediate for achieving skeletal diversity. The constrained structures and dense functionalization of the polycyclic sugar derivatives generated from 8 make these compounds promising candidates for use as starting agents for the production of new analogues and as drugs.
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Affiliation(s)
- Alessandra Cordeiro
- Instituto de Química Médica (C.S.I.C.), Juan de la Cierva 3, 28006 Madrid, Spain
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9
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Sluis-Cremer N, Hamamouch N, San Félix A, Velazquez S, Balzarini J, Camarasa MJ. Structure−Activity Relationships of [2‘,5‘-Bis-O-(tert-butyldimethylsilyl)-β-d-ribofuranosyl]- 3‘-spiro-5‘ ‘-(4‘ ‘-amino-1‘ ‘,2‘ ‘-oxathiole-2‘ ‘,2‘ ‘-dioxide)thymine Derivatives as Inhibitors of HIV-1 Reverse Transcriptase Dimerization. J Med Chem 2006; 49:4834-41. [PMID: 16884295 DOI: 10.1021/jm0604575] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The polymerase activity of HIV-1 reverse transcriptase (RT) is entirely dependent on the heterodimeric structure of the enzyme. Accordingly, RT dimerization represents a target for the development of a new therapeutic class of HIV inhibitors. We previously demonstrated that the N-3-ethyl derivative of 2',5'-bis-O-(tert-butyldimethylsilyl)-beta-D-ribofuranosyl]-3'-spiro-5' '-(4' '-amino-1' ',2' '-oxathiole-2' ',2' '-dioxide)thymine (TSAO-T) destabilizes the inter-subunit interactions of HIV-1 RT [Sluis-Cremer, N.; Dmietrinko, G. I.; Balzarini, J.; Camarasa, M.-J.; Parniak, M. A. Biochemistry 2000, 39, 1427-1433]. In the current study, we evaluated the ability of 64 TSAO-T derivatives to inhibit RT dimerization using a novel screening assay. Five derivatives were identified with improved activity compared to TSAO-T. Four of these harbored hydrophilic or aromatic substituents at the N3 position. Furthermore, a good correlation between the ability of the TSAO-T derivatives to inhibit RT dimerization and the enzyme's polymerase activity was also observed. This study provides an important framework for the rational design of more potent inhibitors of RT dimerization.
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Affiliation(s)
- Nicolas Sluis-Cremer
- Division of Infectious Diseases, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania 15261, USA.
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10
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de Castro S, Lozano A, Jimeno ML, Pérez-Pérez MJ, San-Félix A, Camarasa MJ, Velázquez S. Unprecedented Lability of the 5‘-O-tert-Butyldimethylsilyl Group from 3‘-Spiro-5‘ ‘-(4‘ ‘-acylamino-1‘ ‘,2‘ ‘-oxathiole-2‘ ‘,2‘ ‘-dioxide) Nucleoside Derivatives via Neighboring Group Participation of the 4‘ ‘-Acylamino Residue. J Org Chem 2006; 71:1407-15. [PMID: 16468788 DOI: 10.1021/jo0520588] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Scarce examples of exceptionally mild desilylation of tert-butyldimethylsilyl (TBDMS) ether groups by neighboring group participation have been previously described. Here, we investigate, in detail, the discovery of the unusual lability of the 5'-TBDMS group on 4' '-acylamino TSAO derivatives in DMSO solution. The synthesis and comparative chemical stability studies in different solvents of a variety of 4' '-substituted TSAO derivatives bearing different carbonyl functionalities are reported. Modifications have also been performed at the 5'-position of the TSAO molecule to gain insight into the structural requirements for the desilylation to occur. The role of the solvent has also been studied. Additionally, NMR and theoretical investigations have been carried out to get further insight into the conformational, geometric, and/or electronic parameters that may play a role in the "spontaneous" release of the 5'-TBDMS group. A silyl hydrolysis mechanism involving neighboring group participation of the 4' '-acylamino group is proposed.
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Affiliation(s)
- Sonia de Castro
- Instituto de Química Médica (C.S.I.C.), Juan de la Cierva 3, E-28006 Madrid, Spain
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