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Kothapalli Y, Jones RA, Chu CK, Singh US. Synthesis of Fluorinated Nucleosides/Nucleotides and Their Antiviral Properties. Molecules 2024; 29:2390. [PMID: 38792251 PMCID: PMC11124531 DOI: 10.3390/molecules29102390] [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: 04/02/2024] [Revised: 05/10/2024] [Accepted: 05/13/2024] [Indexed: 05/26/2024] Open
Abstract
The FDA has approved several drugs based on the fluorinated nucleoside pharmacophore, and numerous drugs are currently in clinical trials. Fluorine-containing nucleos(t)ides offer significant antiviral and anticancer activity. The insertion of a fluorine atom, either in the base or sugar of nucleos(t)ides, alters its electronic and steric parameters and transforms the lipophilicity, pharmacodynamic, and pharmacokinetic properties of these moieties. The fluorine atom restricts the oxidative metabolism of drugs and provides enzymatic metabolic stability towards the glycosidic bond of the nucleos(t)ide. The incorporation of fluorine also demonstrates additional hydrogen bonding interactions in receptors with enhanced biological profiles. The present article discusses the synthetic methodology and antiviral activities of FDA-approved drugs and ongoing fluoro-containing nucleos(t)ide drug candidates in clinical trials.
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Affiliation(s)
| | | | - Chung K. Chu
- Department of Pharmaceutical and Biomedical Sciences, College of Pharmacy, University of Georgia, Athens, GA 30602, USA; (Y.K.); (R.A.J.)
| | - Uma S. Singh
- Department of Pharmaceutical and Biomedical Sciences, College of Pharmacy, University of Georgia, Athens, GA 30602, USA; (Y.K.); (R.A.J.)
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Singh US, Konreddy AK, Kothapalli Y, Liu D, Lloyd MG, Annavarapu V, White CA, Bartlett MG, Moffat JF, Chu CK. Prodrug Strategies for the Development of β-l-5-(( E)-2-Bromovinyl)-1-((2 S,4 S)-2-(hydroxymethyl)-1,3-(dioxolane-4-yl))uracil (l-BHDU) against Varicella Zoster Virus (VZV). J Med Chem 2023; 66:7038-7053. [PMID: 37140467 DOI: 10.1021/acs.jmedchem.3c00545] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Varicella zoster virus (VZV) establishes lifelong infection after primary disease and can reactivate. Several drugs are approved to treat VZV diseases, but new antivirals with greater potency are needed. Previously, we identified β-l-5-((E)-2-bromovinyl)-1-((2S,4S)-2-(hydroxymethyl)-1,3-(dioxolane-4-yl))uracil (l-BHDU, 1), which had significant anti-VZV activity. In this communication, we report the synthesis and evaluation of numerous l-BHDU prodrugs: amino acid esters (14-26), phosphoramidates (33-34), long-chain lipids (ODE-l-BHDU-MP, 38, and HDP-l-BHDU-MP, 39), and phosphate ester prodrugs (POM-l-BHDU-MP, 41, and POC-l-BHDU-MP, 47). The amino acid ester l-BHDU prodrugs (l-phenylalanine, 16, and l-valine, 17) had a potent antiviral activity with EC50 values of 0.028 and 0.030 μM, respectively. The phosphate ester prodrugs POM-l-BHDU-MP and POC-l-BHDU-MP had a significant anti-VZV activity with EC50 values of 0.035 and 0.034 μM, respectively, and no cellular toxicity (CC50 > 100 μM) was detected. Out of these prodrugs, ODE-l-BHDU-MP (38) and POM-l-BHDU-MP (41) were selected for further evaluation in future studies.
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Affiliation(s)
- Uma S Singh
- Department of Pharmaceutical and Biomedical Science, College of Pharmacy, University of Georgia, Athens, Georgia 30602, United States
| | - Ananda K Konreddy
- Department of Pharmaceutical and Biomedical Science, College of Pharmacy, University of Georgia, Athens, Georgia 30602, United States
| | - Yugandhar Kothapalli
- Department of Pharmaceutical and Biomedical Science, College of Pharmacy, University of Georgia, Athens, Georgia 30602, United States
| | - Dongmei Liu
- State University of New York, Upstate Medical University, Syracuse, New York 13210, United States
| | - Megan G Lloyd
- State University of New York, Upstate Medical University, Syracuse, New York 13210, United States
| | - Vidya Annavarapu
- Department of Pharmaceutical and Biomedical Science, College of Pharmacy, University of Georgia, Athens, Georgia 30602, United States
| | - Catherine A White
- Department of Pharmaceutical and Biomedical Science, College of Pharmacy, University of Georgia, Athens, Georgia 30602, United States
| | - Michael G Bartlett
- Department of Pharmaceutical and Biomedical Science, College of Pharmacy, University of Georgia, Athens, Georgia 30602, United States
| | - Jennifer F Moffat
- State University of New York, Upstate Medical University, Syracuse, New York 13210, United States
| | - Chung K Chu
- Department of Pharmaceutical and Biomedical Science, College of Pharmacy, University of Georgia, Athens, Georgia 30602, United States
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Liang Z, Huang Y, Li H, Zhang X, Shi K, Zang N, Wang M, Liang T, Wei W. Synthesis and evaluation of 3-phenylisoxazoline derivatives as non-nucleoside hepatitis B virus inhibitors. Tetrahedron 2022. [DOI: 10.1016/j.tet.2022.133177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
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Singh US, Chu CK. Synthesis of 2'-deoxy-2'-fluoro-2'-C-methyl spiro cyclopentyl carbocyclic uridine analog as potential inhibitors of HCV NS5B polymerase. NUCLEOSIDES NUCLEOTIDES & NUCLEIC ACIDS 2020; 39:52-68. [PMID: 32310031 DOI: 10.1080/15257770.2019.1697448] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Synthesis of 1-((4 R,5S,6R,7R)-5,6-dihydroxy-7-(hydroxymethyl)spiro[2.4]heptan-4-yl)pyrimidine-2,4(1H,3H)-dione (12) and its phosphoramidate prodrug 18 is reported. The synthesis of the targeted compound 12 was initiated from triol 1. By the introduction of a substituent methylene group at 6-position of 4, followed by Simmons-Smith cyclopropanation and amination, key intermediate 10 was synthesized. The intermediate amine 10 was utilized to synthesize the nucleoside 12. Furthermore, the nucleoside 12 was derivatized to 2'-α-hydroxy-2'-β-methyl (23) and 2'-α-fluoro-2'-β-methyl (27) analogs. All synthesized derivatives of spiro-cyclopropyl carbocyclic uridine analogs 12, 18, 23 and 27 were evaluated for anti-HCV activity, but none of the compounds, reported in this article show any anti-HCV activity.
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Affiliation(s)
- Uma S Singh
- Department of Pharmaceutical and Biomedical Sciences, The University of Georgia, College of Pharmacy, Athens, Georgia, USA
| | - Chung K Chu
- Department of Pharmaceutical and Biomedical Sciences, The University of Georgia, College of Pharmacy, Athens, Georgia, USA
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Pierra Rouviere C, Dousson CB, Tavis JE. HBV replication inhibitors. Antiviral Res 2020; 179:104815. [PMID: 32380149 PMCID: PMC7293572 DOI: 10.1016/j.antiviral.2020.104815] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2020] [Revised: 04/22/2020] [Accepted: 04/28/2020] [Indexed: 12/21/2022]
Abstract
Chronic Hepatitis B Virus infections afflict >250 million people and kill nearly 1 million annually. Current non-curative therapies are dominated by nucleos(t)ide analogs (NAs) that profoundly but incompletely suppress DNA synthesis by the viral reverse transcriptase. Residual HBV replication during NA therapy contributes to maintenance of the critical nuclear reservoir of the HBV genome, the covalently-closed circular DNA, and to ongoing infection of naive cells. Identification of next-generation NAs with improved efficacy and safety profiles, often through novel prodrug approaches, is the primary thrust of ongoing efforts to improve HBV replication inhibitors. Inhibitors of the HBV ribonuclease H, the other viral enzymatic activity essential for viral genomic replication, are in preclinical development. The complexity of HBV's reverse transcription pathway offers many other potential targets. HBV's protein-priming of reverse transcription has been briefly explored as a potential target, as have the host chaperones necessary for function of the HBV reverse transcriptase. Improved inhibitors of HBV reverse transcription would reduce HBV's replication-dependent persistence mechanisms and are therefore expected to become a backbone of future curative combination anti-HBV therapies.
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Affiliation(s)
| | - Cyril B Dousson
- Ai-biopharma, Medicinal Chemistry Department, Montpellier, France.
| | - John E Tavis
- Department of Molecular Microbiology and Immunology, Saint Louis University School of Medicine, Saint Louis, MO, USA.
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Vostrikov NS, Zagitov VV, Ivanov SP, Lobov AN, Gabdrakhmanova SF, Miftakhov MS. Fluorine containing analogues of cloprostenol. J Fluor Chem 2020. [DOI: 10.1016/j.jfluchem.2020.109552] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Chabour I, Nájera C, Sansano JM. Diastereoselective multicomponent phosphoramidate-aldehyde-dienophile (PAD) process for the synthesis of polysubstituted cyclohex-2-enyl-amine derivatives. Tetrahedron 2020. [DOI: 10.1016/j.tet.2019.130801] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Lussier T, Manchoju A, Wang G, Dostie S, Foster S, Mochirian P, Prévost M, Guindon Y. Diastereoselective Synthesis of Arabino- and Ribo-like Nucleoside Analogues Bearing a Stereogenic C3' All-Carbon Quaternary Center. J Org Chem 2019; 84:16055-16067. [PMID: 31729227 DOI: 10.1021/acs.joc.9b02550] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
The synthesis of novel nucleoside analogues bearing a C3' all-carbon quaternary center and a C2'-hydroxy substituent is described. The all-carbon stereogenic center was generated through an intramolecular 7-endo attack of a silyl-tethered allyl moiety on a tertiary radical using photoredox catalysis. Subsequent allylic oxidation and diastereoselective hydride reductions provided the hydroxy substituent at C2', which then controls the stereoselective introduction of pyrimidine nucleobases on the corresponding furanose scaffold. Density functional theory (DFT) calculations provided insights into the origin of the high syn diastereoselectivity resulting from the radical cyclization. This original methodology grants access to a wide range of 1',2'-cis and 1',2'-trans arabino- and ribo-like analogues bearing an all-carbon quaternary center at C3'. These molecules are currently being tested for their antiviral and anticancer properties.
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Affiliation(s)
- Tommy Lussier
- Bio-organic Chemistry Laboratory , Institut de Recherches Cliniques de Montréal , Montréal , Québec H2W 1R7 , Canada.,Department of Chemistry , Université de Montréal , Montréal , Québec H3C 3J7 , Canada
| | - Amarender Manchoju
- Bio-organic Chemistry Laboratory , Institut de Recherches Cliniques de Montréal , Montréal , Québec H2W 1R7 , Canada.,Department of Chemistry , Université de Montréal , Montréal , Québec H3C 3J7 , Canada
| | - Gang Wang
- Bio-organic Chemistry Laboratory , Institut de Recherches Cliniques de Montréal , Montréal , Québec H2W 1R7 , Canada.,Department of Chemistry , Université de Montréal , Montréal , Québec H3C 3J7 , Canada
| | - Starr Dostie
- Bio-organic Chemistry Laboratory , Institut de Recherches Cliniques de Montréal , Montréal , Québec H2W 1R7 , Canada
| | - Scott Foster
- Bio-organic Chemistry Laboratory , Institut de Recherches Cliniques de Montréal , Montréal , Québec H2W 1R7 , Canada
| | - Philippe Mochirian
- Bio-organic Chemistry Laboratory , Institut de Recherches Cliniques de Montréal , Montréal , Québec H2W 1R7 , Canada
| | - Michel Prévost
- Bio-organic Chemistry Laboratory , Institut de Recherches Cliniques de Montréal , Montréal , Québec H2W 1R7 , Canada
| | - Yvan Guindon
- Bio-organic Chemistry Laboratory , Institut de Recherches Cliniques de Montréal , Montréal , Québec H2W 1R7 , Canada.,Department of Chemistry , Université de Montréal , Montréal , Québec H3C 3J7 , Canada.,Department of Biochemistry, Microbiology and Immunology , University of Ottawa , Ottawa , Ontario K1N 6N5 , Canada
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