1
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Choi SM, Nam YE, An YJ, Choi ER, Park H, Schinazi RF, Cho JH. Direct Synthesis of Aryloxy Phosphonamidate Nucleotide Prodrugs Using the Cross Metathesis Assisted by Ultrasonic Irradiation. Org Lett 2024; 26:4841-4846. [PMID: 38381649 DOI: 10.1021/acs.orglett.4c00094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2024]
Abstract
A direct synthetic strategy of aryloxy phosphonamidate nucleotide prodrugs (A, G, C, and U) was developed with the CM reaction assisted by ultrasonic irradiation and partitioned addition of 12 mol % of Hoveyda-Grubbs (H-G) II catalyst in 61-82% yields as a mixture of E-/Z-isomers (∼2:1) from aryloxy vinylphosponamidate and 5'-vinyl nucleoside moieties.
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Affiliation(s)
- Se Myeong Choi
- Department of Medicinal Biotechnology, College of Health Sciences, Dong-A University, Busan 49315, Korea
| | - Ye Eun Nam
- Department of Medicinal Biotechnology, College of Health Sciences, Dong-A University, Busan 49315, Korea
| | - Yeon Jin An
- Department of Medicinal Biotechnology, College of Health Sciences, Dong-A University, Busan 49315, Korea
| | - Eun Rang Choi
- Department of Medicinal Biotechnology, College of Health Sciences, Dong-A University, Busan 49315, Korea
| | - Hyejin Park
- Department of Translational Biomedical Sciences, Graduate School of Dong-A University, Busan 49201, Korea
| | - Raymond F Schinazi
- Center for ViroScience and Cure, Laboratory of Biochemical Pharmacology, Department of Pediatrics, Emory University School of Medicine and Children's Healthcare of Atlanta, Atlanta, Georgia 30322, United States
| | - Jong Hyun Cho
- Department of Medicinal Biotechnology, College of Health Sciences, Dong-A University, Busan 49315, Korea
- Department of Translational Biomedical Sciences, Graduate School of Dong-A University, Busan 49201, Korea
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2
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Formica M, Ferko B, Marsh T, Davidson TA, Yamazaki K, Dixon DJ. Second Generation Catalytic Enantioselective Nucleophilic Desymmetrization at Phosphorus (V): Improved Generality, Efficiency and Modularity. Angew Chem Int Ed Engl 2024; 63:e202400673. [PMID: 38381534 DOI: 10.1002/anie.202400673] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2024] [Revised: 02/20/2024] [Accepted: 02/21/2024] [Indexed: 02/23/2024]
Abstract
A broadly improved second generation catalytic two-phase strategy for the enantioselective synthesis of stereogenic at phosphorus (V) compounds is described. This protocol, consisting of a bifunctional iminophosphorane (BIMP) catalyzed nucleophilic desymmetrization of prochiral, bench stable P(V) precursors and subsequent enantiospecific substitution allows for divergent access to a wide range of C-, N-, O- and S- substituted P(V) containing compounds from a handful of enantioenriched intermediates. A new ureidopeptide BIMP catalyst/thiaziolidinone leaving group combination allowed for a far wider substrate scope and increased reaction efficiency and practicality over previously established protocols. The resulting enantioenriched intermediates could then be transformed into an even greater range of distinct classes of P(V) compounds by displacement of the remaining leaving group as well as allowing for even further diversification downstream. Density functional theory (DFT) calculations were performed to pinpoint the origin of enantioselectivity for the BIMP-catalyzed desymmetrization, to rationalize how a superior catalyst/leaving group combination leads to increased generality in our second-generation catalytic system, as well as shed light onto observed stereochemical retention and inversion pathways when performing late-stage enantiospecific SN2@P reactions with Grignard reagents.
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Affiliation(s)
- Michele Formica
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, OX1 3TA, Oxford, UK
| | - Branislav Ferko
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, OX1 3TA, Oxford, UK
| | - Thomas Marsh
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, OX1 3TA, Oxford, UK
| | - Timothy A Davidson
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, OX1 3TA, Oxford, UK
| | - Ken Yamazaki
- Division of Applied Chemistry, Okayama University, Tsushimanaka, Okayama, 700-8530, Japan
| | - Darren J Dixon
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, OX1 3TA, Oxford, UK
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3
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Fujisaka A, Hari Y, Takuma H, Rahman SMA, Yoshikawa H, Pang J, Imanishi T, Obika S. Effective syntheses of 2',4'-BNA NC monomers bearing adenine, guanine, thymine, and 5-methylcytosine, and the properties of oligonucleotides fully modified with 2',4'-BNA NC. Bioorg Med Chem 2019; 27:1728-1741. [PMID: 30862430 DOI: 10.1016/j.bmc.2019.02.034] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2018] [Revised: 02/15/2019] [Accepted: 02/16/2019] [Indexed: 12/11/2022]
Abstract
We efficiently synthesized 2'-O,4'-C-aminomethylene-bridged nucleic acid (2',4'-BNANC) monomers bearing the four nucleobases, guanine, adenine, thymine, and 5-methylcytosine and incorporated these monomers into oligonucleotides. Initially, we carried out the transglycosylation reaction on several 2'-O-substituted 5-methyluridines to evaluate the effects of 2'-substitutions on this reaction. Under the optimized conditions, purine nucleobases were successfully introduced, and 2',4'-BNANC monomers bearing adenine or guanine were obtained over several steps. In addition, the improved synthesis of the 2',4'-BNANC monomers bearing thymine or 5-methylcytosine was also achieved. The obtained 2',4'-BNANC monomers were subsequently incorporated into oligonucleotides and the duplex-forming abilities of the modified oligonucleotides were investigated. Duplexes containing 2',4'-BNANC monomers in both or either strands were found to possess excellent thermal stabilities.
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Affiliation(s)
- Aki Fujisaka
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan; Faculty of Pharmacy, Osaka Ohtani University, Nishikiori-Kita 3-11-1, Tondabayashi, Osaka 584-8540, Japan
| | - Yoshiyuki Hari
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan; Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Nishihama, Yamashiro-cho, Tokushima 770-8514, Japan
| | - Hiroko Takuma
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - S M Abdur Rahman
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan; Department of Clinical Pharmacy & Pharmacology, Faculty of Pharmacy, University of Dhaka, Dhaka 1000, Bangladesh
| | - Haruhisa Yoshikawa
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan; BNA Inc, 7-7-20 Saito-Asagi, Ibaraki, Osaka 567-0085, Japan
| | - Juanjuan Pang
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Takeshi Imanishi
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan; BNA Inc, 7-7-20 Saito-Asagi, Ibaraki, Osaka 567-0085, Japan
| | - Satoshi Obika
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan.
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4
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Ito Y, Kimura A, Osawa T, Hari Y. Photoredox-Catalyzed Deformylative 1,4-Addition of 2′-Deoxy-5′-O-phthalimidonucleosides for Synthesis of 5′-Carba Analogs of Nucleoside 5′-Phosphates. J Org Chem 2018; 83:10701-10708. [DOI: 10.1021/acs.joc.8b00637] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Yuta Ito
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Nishihama, Yamashiro-cho, Tokushima 770-8514, Japan
| | - Airi Kimura
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Nishihama, Yamashiro-cho, Tokushima 770-8514, Japan
| | - Takashi Osawa
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Nishihama, Yamashiro-cho, Tokushima 770-8514, Japan
| | - Yoshiyuki Hari
- Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Nishihama, Yamashiro-cho, Tokushima 770-8514, Japan
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5
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Parmar RG, Brown CR, Matsuda S, Willoughby JLS, Theile CS, Charissé K, Foster DJ, Zlatev I, Jadhav V, Maier MA, Egli M, Manoharan M, Rajeev KG. Facile Synthesis, Geometry, and 2'-Substituent-Dependent in Vivo Activity of 5'-(E)- and 5'-(Z)-Vinylphosphonate-Modified siRNA Conjugates. J Med Chem 2018; 61:734-744. [PMID: 29376650 DOI: 10.1021/acs.jmedchem.7b01147] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
(E)-Vinylphosphonate ((E)-VP), a metabolically stable phosphate mimic at the 5'-end of the antisense strand, enhances the in vivo potency of siRNA. Here we describe a straightforward synthetic approach to incorporate a nucleotide carrying a vinylphosphonate (VP) moiety at the 5'-end of oligonucleotides under standard solid-phase synthesis and deprotection conditions by utilizing pivaloyloxymethyl (POM) protected VP-nucleoside phosphoramidites. The POM protection enhances scope and scalability of 5'-VP-modified oligonucleotides and, in a broader sense, the synthesis of oligonucleotides modified with phosphonate moieties. Trivalent N-acetylgalactosamine-conjugated small interfering RNA (GalNAc-siRNA) comprising (E)-geometrical isomer of VP showed improved RISC loading with robust RNAi-mediated gene silencing in mice compared to the corresponding (Z)-isomer despite similar tissue accumulation. We also obtained structural insights into why bulkier 2'-ribosugar substitutions such as 2'-O-[2-(methylamino)-2-oxoethyl] are well tolerated only when combined with 5'-(E)-VP.
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Affiliation(s)
- Rubina Giare Parmar
- Alnylam Pharmaceuticals , 300 Third Street, Cambridge, Massachusetts 02142, United States
| | - Christopher R Brown
- Alnylam Pharmaceuticals , 300 Third Street, Cambridge, Massachusetts 02142, United States
| | - Shigeo Matsuda
- Alnylam Pharmaceuticals , 300 Third Street, Cambridge, Massachusetts 02142, United States
| | | | - Christopher S Theile
- Alnylam Pharmaceuticals , 300 Third Street, Cambridge, Massachusetts 02142, United States
| | - Klaus Charissé
- Alnylam Pharmaceuticals , 300 Third Street, Cambridge, Massachusetts 02142, United States
| | - Donald J Foster
- Alnylam Pharmaceuticals , 300 Third Street, Cambridge, Massachusetts 02142, United States
| | - Ivan Zlatev
- Alnylam Pharmaceuticals , 300 Third Street, Cambridge, Massachusetts 02142, United States
| | - Vasant Jadhav
- Alnylam Pharmaceuticals , 300 Third Street, Cambridge, Massachusetts 02142, United States
| | - Martin A Maier
- Alnylam Pharmaceuticals , 300 Third Street, Cambridge, Massachusetts 02142, United States
| | - Martin Egli
- Department of Biochemistry and Center for Structural Biology, Vanderbilt University, School of Medicine , Nashville, Tennessee 37232, United States
| | - Muthiah Manoharan
- Alnylam Pharmaceuticals , 300 Third Street, Cambridge, Massachusetts 02142, United States
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6
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Zlatev I, Foster DJ, Liu J, Charisse K, Brigham B, Parmar RG, Jadhav V, Maier MA, Rajeev KG, Egli M, Manoharan M. 5'-C-Malonyl RNA: Small Interfering RNAs Modified with 5'-Monophosphate Bioisostere Demonstrate Gene Silencing Activity. ACS Chem Biol 2016; 11:953-60. [PMID: 26675211 DOI: 10.1021/acschembio.5b00654] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
5'-Phosphorylation is a critical step in the cascade of events that leads to loading of small interfering RNAs (siRNAs) into the RNA-induced silencing complex (RISC) to elicit gene silencing. 5'-Phosphorylation of exogenous siRNAs is generally accomplished by a cytosolic Clp1 kinase, and in most cases, the presence of a 5'-monophosphate on synthetic siRNAs is not a prerequisite for activity. Chemically introduced, metabolically stable 5'-phosphate mimics can lead to higher metabolic stability, increased RISC loading, and higher gene silencing activities of chemically modified siRNAs. In this study, we report the synthesis of 5'-C-malonyl RNA, a 5'-monophosphate bioisostere. A 5'-C-malonyl-modified nucleotide was incorporated at the 5'-terminus of chemically modified RNA oligonucleotides using solid-phase synthesis. In vitro silencing activity, in vitro metabolic stability, and in vitro RISC loading of 5'-C-malonyl siRNA was compared to corresponding 5'-phosphorylated and 5'-nonphosphorylated siRNAs. The 5'-C-malonyl siRNAs showed sustained or improved in vitro gene silencing and high levels of Ago2 loading and conferred dramatically improved metabolic stability to the antisense strand of the siRNA duplexes. In silico modeling studies indicate a favorable fit of the 5'-C-malonyl group within the 5'-phosphate binding pocket of human Ago2MID domain.
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Affiliation(s)
- Ivan Zlatev
- Alnylam Pharmaceuticals, 300
Third Street, Cambridge, Massachusetts 02142, United States
| | - Donald J. Foster
- Alnylam Pharmaceuticals, 300
Third Street, Cambridge, Massachusetts 02142, United States
| | - Jingxuan Liu
- Alnylam Pharmaceuticals, 300
Third Street, Cambridge, Massachusetts 02142, United States
| | - Klaus Charisse
- Alnylam Pharmaceuticals, 300
Third Street, Cambridge, Massachusetts 02142, United States
| | - Benjamin Brigham
- Alnylam Pharmaceuticals, 300
Third Street, Cambridge, Massachusetts 02142, United States
| | - Rubina G. Parmar
- Alnylam Pharmaceuticals, 300
Third Street, Cambridge, Massachusetts 02142, United States
| | - Vasant Jadhav
- Alnylam Pharmaceuticals, 300
Third Street, Cambridge, Massachusetts 02142, United States
| | - Martin A. Maier
- Alnylam Pharmaceuticals, 300
Third Street, Cambridge, Massachusetts 02142, United States
| | | | - Martin Egli
- Department
of Biochemistry, Vanderbilt University, Nashville, Tennessee 37232, United States
| | - Muthiah Manoharan
- Alnylam Pharmaceuticals, 300
Third Street, Cambridge, Massachusetts 02142, United States
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7
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Kel'in AV, Zlatev I, Harp J, Jayaraman M, Bisbe A, O'Shea J, Taneja N, Manoharan RM, Khan S, Charisse K, Maier MA, Egli M, Rajeev KG, Manoharan M. Structural Basis of Duplex Thermodynamic Stability and Enhanced Nuclease Resistance of 5'-C-Methyl Pyrimidine-Modified Oligonucleotides. J Org Chem 2016; 81:2261-79. [PMID: 26940174 DOI: 10.1021/acs.joc.5b02375] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Although judicious use of chemical modifications has contributed to the success of nucleic acid therapeutics, poor systemic stability remains a major hurdle. The introduction of functional groups around the phosphate backbone can enhance the nuclease resistance of oligonucleotides (ONs). Here, we report the synthesis of enantiomerically pure (R)- and (S)-5'-C-methyl (C5'-Me) substituted nucleosides and their incorporation into ONs. These modifications generally resulted in a decrease in thermal stability of oligonucleotide (ON) duplexes in a manner dependent on the stereoconfiguration at C5' with greater destabilization characteristic of (R)-epimers. Enhanced stability against snake venom phosphodiesterase resulted from modification of the 3'-end of an ON with either (R)- or (S)-C5'-Me nucleotides. The (S)-isomers with different 2'-substituents provided greater resistance against 3'-exonucleases than the corresponding (R)-isomers. Crystal structure analyses of RNA octamers with (R)- or (S)-5'-C-methyl-2'-deoxy-2'-fluorouridine [(R)- or (S)-C5'-Me-2'-FU, respectively] revealed that the stereochemical orientation of the C5'-Me and the steric effects that emanate from the alkyl substitution are the dominant determinants of thermal stability and are likely molecular origins of resistance against nucleases. X-ray and NMR structural analyses showed that the (S)-C5'-Me epimers are spatially and structurally more similar to their natural 5' nonmethylated counterparts than the corresponding (R)-epimers.
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Affiliation(s)
- Alexander V Kel'in
- Alnylam Pharmaceuticals , 300 Third Street, Cambridge, Massachusetts 02142, United States
| | - Ivan Zlatev
- Alnylam Pharmaceuticals , 300 Third Street, Cambridge, Massachusetts 02142, United States
| | - Joel Harp
- Department of Biochemistry and Center for Structural Biology, Vanderbilt University, School of Medicine , Nashville, Tennessee 37232, United States
| | - Muthusamy Jayaraman
- Alnylam Pharmaceuticals , 300 Third Street, Cambridge, Massachusetts 02142, United States
| | - Anna Bisbe
- Alnylam Pharmaceuticals , 300 Third Street, Cambridge, Massachusetts 02142, United States
| | - Jonathan O'Shea
- Alnylam Pharmaceuticals , 300 Third Street, Cambridge, Massachusetts 02142, United States
| | - Nate Taneja
- Alnylam Pharmaceuticals , 300 Third Street, Cambridge, Massachusetts 02142, United States
| | - Rajar M Manoharan
- Alnylam Pharmaceuticals , 300 Third Street, Cambridge, Massachusetts 02142, United States
| | - Saeed Khan
- Department of Chemistry and Biochemistry, University of California , Los Angeles, California 90095, United States
| | - Klaus Charisse
- Alnylam Pharmaceuticals , 300 Third Street, Cambridge, Massachusetts 02142, United States
| | - Martin A Maier
- Alnylam Pharmaceuticals , 300 Third Street, Cambridge, Massachusetts 02142, United States
| | - Martin Egli
- Department of Biochemistry and Center for Structural Biology, Vanderbilt University, School of Medicine , Nashville, Tennessee 37232, United States
| | | | - Muthiah Manoharan
- Alnylam Pharmaceuticals , 300 Third Street, Cambridge, Massachusetts 02142, United States
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8
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Kim S, Kim E, Lee W, Hee Hong J. Synthesis and antiviral evaluation of novel 4'-trifluoromethylated 5'-deoxyapiosyl nucleoside phosphonic acids. NUCLEOSIDES NUCLEOTIDES & NUCLEIC ACIDS 2015; 33:747-66. [PMID: 25372991 DOI: 10.1080/15257770.2014.938753] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
On the basis of the discovery that the threosyl nucleoside phosphonate PMDTA is a potent anti-HIV compound, we synthesized several 4'-trifluoromethyl-5'-deoxyapiosyl nucleoside phosphonic acids and evaluated their anti-HIV activity. An efficient synthetic route was optimized, starting from an α-trifluoromethyl-α,β-unsaturated ester. Glycosylation of the purine nucleosidic bases with a glycosyl donor yielded modified nucleoside intermediates, which were then phosphonated and hydrolyzed to provide the targeted nucleoside analogs. Once synthesized, the anti-HIV and cytotoxic activities of each analog were evaluated. None of the analogs showed significant anti-HIV activity at concentrations up to 100 μM.
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Affiliation(s)
- Seyeon Kim
- a BK-21 Project Team, College of Pharmacy , Chosun University , Kwangju , Republic of Korea
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9
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Pradere U, Garnier-Amblard E, Coats SJ, Amblard F, Schinazi RF. Synthesis of nucleoside phosphate and phosphonate prodrugs. Chem Rev 2014; 114:9154-218. [PMID: 25144792 PMCID: PMC4173794 DOI: 10.1021/cr5002035] [Citation(s) in RCA: 386] [Impact Index Per Article: 38.6] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2014] [Indexed: 01/29/2023]
Affiliation(s)
- Ugo Pradere
- Center
for AIDS Research, Laboratory of Biochemical Pharmacology, Department
of Pediatrics, Emory University School of
Medicine, and Veterans Affairs Medical Center, Atlanta, Georgia 30322, United States
| | | | | | - Franck Amblard
- Center
for AIDS Research, Laboratory of Biochemical Pharmacology, Department
of Pediatrics, Emory University School of
Medicine, and Veterans Affairs Medical Center, Atlanta, Georgia 30322, United States
| | - Raymond F. Schinazi
- Center
for AIDS Research, Laboratory of Biochemical Pharmacology, Department
of Pediatrics, Emory University School of
Medicine, and Veterans Affairs Medical Center, Atlanta, Georgia 30322, United States
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10
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Seamon KJ, Hansen EC, Kadina AP, Kashemirov BA, McKenna CE, Bumpus NN, Stivers JT. Small molecule inhibition of SAMHD1 dNTPase by tetramer destabilization. J Am Chem Soc 2014; 136:9822-5. [PMID: 24983818 PMCID: PMC4105058 DOI: 10.1021/ja5035717] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
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SAMHD1
is a GTP-activated nonspecific dNTP triphosphohydrolase
that depletes dNTP pools in resting CD4+ T cells and macrophages and
effectively restricts infection by HIV-1. We have designed a nonsubstrate
dUTP analogue with a methylene bridge connecting the α phosphate
and 5′ carbon that potently inhibits SAMHD1. Although pppCH2dU shows apparent competitive inhibition, it acts by a surprising
allosteric mechanism that destabilizes active enzyme tetramer.
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Affiliation(s)
- Kyle J Seamon
- Department of Pharmacology and Molecular Sciences, The Johns Hopkins University School of Medicine , 725 North Wolfe Street, Baltimore, Maryland 21205-2185, United States
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11
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Toti KS, Moss SM, Paoletta S, Gao ZG, Jacobson KA, Van Calenbergh S. Synthesis and evaluation of N⁶-substituted apioadenosines as potential adenosine A₃ receptor modulators. Bioorg Med Chem 2014; 22:4257-68. [PMID: 24931275 DOI: 10.1016/j.bmc.2014.05.036] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2014] [Revised: 05/13/2014] [Accepted: 05/14/2014] [Indexed: 12/21/2022]
Abstract
Adenosine receptors (ARs) trigger signal transduction pathways inside the cell when activated by extracellular adenosine. Selective modulation of the A₃AR subtype may be beneficial in controlling diseases such as colorectal cancer and rheumatoid arthritis. Here, we report the synthesis and evaluation of β-D-apio-D-furano- and α-D-apio-L-furanoadenosines and derivatives thereof. Introduction of a 2-methoxy-5-chlorobenzyl group at N(6) of β-D-apio-D-furanoadenosine afforded an A₃AR antagonist (10c, Ki=0.98 μM), while a similar modification of an α-D-apio-L-furanoadenosine gave rise to a partial agonist (11c, Ki=3.07 μM). The structural basis for this difference was examined by docking to an A₃AR model; the antagonist lacked a crucial interaction with Thr94.
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Affiliation(s)
- Kiran S Toti
- Laboratory for Medicinal Chemistry, Faculty of Pharmaceutical Sciences, Ghent University, Harelbekestraat 72, B-9000 Gent, Belgium
| | - Steven M Moss
- Molecular Recognition Section, Laboratory of Bioorganic Chemistry, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Silvia Paoletta
- Molecular Recognition Section, Laboratory of Bioorganic Chemistry, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Zhan-Guo Gao
- Molecular Recognition Section, Laboratory of Bioorganic Chemistry, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Kenneth A Jacobson
- Molecular Recognition Section, Laboratory of Bioorganic Chemistry, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Serge Van Calenbergh
- Laboratory for Medicinal Chemistry, Faculty of Pharmaceutical Sciences, Ghent University, Harelbekestraat 72, B-9000 Gent, Belgium.
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