Current Protocols in Nucleic Acid Chemistry最新文献

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Synthesis of 2′-Fluorinated Northern Methanocarbacyclic (2′-F-NMC) Nucleosides and Their Incorporation Into Oligonucleotides 2′-氟化北甲碳环(2′-F-NMC)核苷的合成及其与寡核苷酸的结合
Current Protocols in Nucleic Acid Chemistry Pub Date : 2020-01-27 DOI: 10.1002/cpnc.103
Masaaki Akabane-Nakata, Pawan Kumar, Namrata D. Erande, Shigeo Matsuda, Muthiah Manoharan
{"title":"Synthesis of 2′-Fluorinated Northern Methanocarbacyclic (2′-F-NMC) Nucleosides and Their Incorporation Into Oligonucleotides","authors":"Masaaki Akabane-Nakata,&nbsp;Pawan Kumar,&nbsp;Namrata D. Erande,&nbsp;Shigeo Matsuda,&nbsp;Muthiah Manoharan","doi":"10.1002/cpnc.103","DOIUrl":"10.1002/cpnc.103","url":null,"abstract":"<p>This article describes chemical synthesis of 2′-fluorinated <i>Northern</i> methanocarbacyclic (2′-F-NMC) nucleosides and phosphoramidites, based on a bicyclo[3.1.0]hexane scaffold bearing all four natural nucleobases (U, C, A, and G), and their incorporation into oligonucleotides by solid-supported synthesis. This synthesis starts from commercially available cyclopent-2-en-1-one to obtain the fluorinated carbocyclic pseudosugar intermediate (<b>S.13</b>), which can be converted to the uridine intermediate by condensation with isocyanate, followed by cyclization, and to adenine and guanine precursors by microwave-assisted reactions. All four 2′-F-NMC phosphoramidites are synthesized from <b>S.13</b> in a convergent approach, and the monomers are used for synthesis of 2′-F-NMC-modified oligonucleotides. © 2020 by John Wiley &amp; Sons, Inc.</p><p><b>Basic Protocol 1</b>: Preparation of fluorinated carbocyclic pseudosugar intermediate</p><p><b>Basic Protocol 2</b>: Preparation of 2′-F-NMC uridine and cytidine phosphoramidites</p><p><b>Basic Protocol 3</b>: Preparation of 2′-F-NMC adenosine phosphoramidite</p><p><b>Basic Protocol 4</b>: Preparation of 2′-F-NMC guanosine phosphoramidite</p><p><b>Basic Protocol 5</b>: Synthesis of oligonucleotides containing 2ʹ-F-NMC</p>","PeriodicalId":10966,"journal":{"name":"Current Protocols in Nucleic Acid Chemistry","volume":"80 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/cpnc.103","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"37583222","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Synthesis of 4-Cyanoindole Nucleosides, 4-Cyanoindole-2ʹ-Deoxyribonucleoside-5ʹ-Triphosphate (4CIN-TP), and Enzymatic Incorporation of 4CIN-TP into DNA 4-氰吲哚核苷、4-氰吲哚-2′-脱氧核糖核苷-5′-三磷酸(4CIN-TP)的合成及4CIN-TP在DNA中的酶促结合
Current Protocols in Nucleic Acid Chemistry Pub Date : 2020-01-07 DOI: 10.1002/cpnc.101
Kellan T. Passow, Nicole M. Antczak, Shana J. Sturla, Daniel A. Harki
{"title":"Synthesis of 4-Cyanoindole Nucleosides, 4-Cyanoindole-2ʹ-Deoxyribonucleoside-5ʹ-Triphosphate (4CIN-TP), and Enzymatic Incorporation of 4CIN-TP into DNA","authors":"Kellan T. Passow,&nbsp;Nicole M. Antczak,&nbsp;Shana J. Sturla,&nbsp;Daniel A. Harki","doi":"10.1002/cpnc.101","DOIUrl":"10.1002/cpnc.101","url":null,"abstract":"<p>4-Cyanoindole-2ʹ-deoxyribonucleoside (4CIN) is a fluorescent isomorphic nucleoside analogue with superior spectroscopic properties in terms of Stokes shift and quantum yield in comparison to the widely utilized isomorphic nucleoside analogue, 2-aminopurine-2ʹ-deoxyribonucleoside (2APN). Notably, when inserted into single- or double-stranded DNA, 4CIN experiences substantially less in-strand fluorescence quenching compared to 2APN. Given the utility of these properties for a spectrum of research applications involving oligonucleotides and oligonucleotide-protein interactions (e.g., enzymatic processes, DNA hybridization, DNA damage), we envision that additional reagents based on 4-cyanoindole nucleosides may be widely utilized. This protocol expands on the previously published synthesis of 4CIN to include synthetic routes to both 4-cyanoindole-ribonucleoside (4CINr) and 4-cyanoindole-2ʹ-deoxyribonucleoside-5ʹ-triphosphate (4CIN-TP), as well as a method for the enzymatic incorporation of 4CIN-TP into DNA by a polymerase. These methods are anticipated to further enable the utilization of 4CIN in diverse applications involving DNA and RNA oligonucleotides. © 2020 by John Wiley &amp; Sons, Inc.</p><p><b>Basic Protocol 1</b>: Synthesis of 4-cyanoindole-2ʹ-deoxyribonucleoside (4CIN) and 4CIN phosphoramidite <b>4</b></p><p><b>Basic Protocol 2</b>: Synthesis of 4-cyanoindole-ribonucleoside (4CINr)</p><p><b>Basic Protocol 3</b>: Synthesis of 4-cyanoindole-2ʹ-deoxyribonucleoside-5ʹ-triphosphate (4CIN-TP)</p><p><b>Basic Protocol 4</b>: Steady state incorporation kinetics of 2AP-TP and 4CIN-TP by a DNA polymerase</p>","PeriodicalId":10966,"journal":{"name":"Current Protocols in Nucleic Acid Chemistry","volume":"80 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/cpnc.101","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"37519093","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
Copper-Catalyzed Huisgen 1,3-Dipolar Cycloaddition Tailored for Phosphorothioate Oligonucleotides 专为硫代寡核苷酸设计的铜催化Huisgen 1,3-偶极环加成
Current Protocols in Nucleic Acid Chemistry Pub Date : 2019-12-29 DOI: 10.1002/cpnc.102
Malgorzata Honcharenko, Dmytro Honcharenko, Roger Stromberg
{"title":"Copper-Catalyzed Huisgen 1,3-Dipolar Cycloaddition Tailored for Phosphorothioate Oligonucleotides","authors":"Malgorzata Honcharenko,&nbsp;Dmytro Honcharenko,&nbsp;Roger Stromberg","doi":"10.1002/cpnc.102","DOIUrl":"10.1002/cpnc.102","url":null,"abstract":"<p>An efficient method for attachment of a variety of reporter groups to oligonucleotides (ONs) is copper (I) [Cu(I)]-catalyzed Huisgen azide-alkyne 1,3-dipolar cycloaddition (“click reaction”). However, in the case of ONs with phosphorothioate modifications as internucleosidic linkages (PS-ONs), this conjugation method has to be adjusted to be compatible with the sulfur-containing groups. The method described here is adapted for PS-ONs, utilizes solid-supported ONs, and implements the Cu(I) bromide dimethyl sulfide complex (CuBr × Me<sub>2</sub>S) as a mediator for the click reaction. The solid-supported ONs can be readily transformed into “clickable ONs” by on-line addition of an alkyne-containing linker that subsequently can react with an azido-containing moiety (e.g., a peptide) in the presence of CuBr × Me<sub>2</sub>S. © 2019 by John Wiley &amp; Sons, Inc.</p><p><b>Basic Protocol 1</b>: Conjugation on solid support</p><p><b>Support Protocol</b>: Removal of 4,4′-dimethoxytrityl group from amino linker</p><p><b>Basic Protocol 2</b>: Removal of protecting groups and cleavage from solid support</p><p><b>Basic Protocol 3</b>: HPLC purification</p>","PeriodicalId":10966,"journal":{"name":"Current Protocols in Nucleic Acid Chemistry","volume":"80 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/cpnc.102","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"37497513","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Issue Information TOC 问题信息TOC
Current Protocols in Nucleic Acid Chemistry Pub Date : 2019-12-19 DOI: 10.1002/cpnc.68
{"title":"Issue Information TOC","authors":"","doi":"10.1002/cpnc.68","DOIUrl":"10.1002/cpnc.68","url":null,"abstract":"<p><b>Cover</b>: In Senthivelan et al. (http://doi.org/10.1002/cpnc.100), the image shows Preparation of 7-methylguanosine monophosphate <b>2</b>. \u0000\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":10966,"journal":{"name":"Current Protocols in Nucleic Acid Chemistry","volume":"79 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/cpnc.68","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42108769","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Highly Regioselective Methylation of Guanosine Nucleotides: An Efficient Synthesis of 7-Methylguanosine Nucleotides 鸟苷核苷酸的高度区域选择性甲基化:7‐甲基鸟苷核苷酸的高效合成
Current Protocols in Nucleic Acid Chemistry Pub Date : 2019-10-09 DOI: 10.1002/cpnc.100
Annamalai Senthilvelan, Muthian Shanmugasundaram, Anilkumar R. Kore
{"title":"Highly Regioselective Methylation of Guanosine Nucleotides: An Efficient Synthesis of 7-Methylguanosine Nucleotides","authors":"Annamalai Senthilvelan,&nbsp;Muthian Shanmugasundaram,&nbsp;Anilkumar R. Kore","doi":"10.1002/cpnc.100","DOIUrl":"10.1002/cpnc.100","url":null,"abstract":"<p>This article describes a simple, reliable, efficient, and general method for the synthesis of 7-methylguanosine nucleotides such as 7-methylguanosine 5′-<i>O</i>-monophosphate (m<sup>7</sup>GMP), 7-methylguanosine 5′-<i>O</i>-diphosphate (m<sup>7</sup>GDP), 7-methyl-2′-deoxyguanosine 5′-<i>O</i>-triphosphate (m<sup>7</sup>2′dGTP), and 7-methylguanosine 5′-<i>O</i>-triphosphate (m<sup>7</sup>GTP) starting from the corresponding guanosine nucleotide is described. The present protocol involves methylation reaction of guanosine nucleotide using dimethyl sulfate as a methylating agent and water as a solvent at room temperature to provide the corresponding 7-methylguanosine nucleotide in good yields with high purity (&gt;99.5%). It is noteworthy that the present methylation reaction proceeds smoothly under aqueous conditions that is highly regioselective to afford exclusive 7-methylguanosine nucleotide. © 2019 by John Wiley &amp; Sons, Inc.</p><p><b>Basic Protocol</b>: Synthesis of 7-methylguanosine nucleotides.</p>","PeriodicalId":10966,"journal":{"name":"Current Protocols in Nucleic Acid Chemistry","volume":"79 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/cpnc.100","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43930478","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Issue Information TOC 问题信息TOC
Current Protocols in Nucleic Acid Chemistry Pub Date : 2019-09-17 DOI: 10.1002/cpnc.67
{"title":"Issue Information TOC","authors":"","doi":"10.1002/cpnc.67","DOIUrl":"10.1002/cpnc.67","url":null,"abstract":"<p><b>Cover</b>: In Yamamoto et al. (http://doi.org/10.1002/cpnc.99), the image shows molecular design of trivalent GalNAc ligands. (<b>A</b>) A conventional trivalent pyramidal structure, (<b>B</b>) our truncated-pyramidal structure, (<b>C</b>) a structure of tandemly-conjugated monovalent GalNAc units we developed earlier (Yamamoto, Sawamura, Wada, Harada-Shiba, &amp; Obika, 2016).\u0000\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":10966,"journal":{"name":"Current Protocols in Nucleic Acid Chemistry","volume":"78 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/cpnc.67","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46383629","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Synthesis of Monovalent N-Acetylgalactosamine Phosphoramidite for Liver-Targeting Oligonucleotides 肝靶向寡核苷酸单价N-乙酰氨基半乳糖的合成
Current Protocols in Nucleic Acid Chemistry Pub Date : 2019-09-15 DOI: 10.1002/cpnc.99
Tsuyoshi Yamamoto, Chisato Terada, Koki Kashiwada, Asako Yamayoshi, Mariko Harada-Shiba, Satoshi Obika
{"title":"Synthesis of Monovalent N-Acetylgalactosamine Phosphoramidite for Liver-Targeting Oligonucleotides","authors":"Tsuyoshi Yamamoto,&nbsp;Chisato Terada,&nbsp;Koki Kashiwada,&nbsp;Asako Yamayoshi,&nbsp;Mariko Harada-Shiba,&nbsp;Satoshi Obika","doi":"10.1002/cpnc.99","DOIUrl":"10.1002/cpnc.99","url":null,"abstract":"<p>Ligand-targeted drug delivery (LTDD) has emerged as an attractive option in the field of oligonucleotide drugs following the great success of <i>N</i>-acetylgalactosamine (GalNAc)–conjugated siRNA and antisense oligonucleotides. GalNAc is a well-known ligand of the asialoglycoprotein receptor (ASGPR), and is classified as a C-type lectin associated with the metabolism of desialylated glycoproteins. This article describes the synthesis of a non-nucleosidic monovalent GalNAc phosphoramidite—a useful reagent for facilitating the conjugation of GalNAc epitopes into oligonucleotides using DNA synthesizers—together with some important caveats. The monomeric GalNAc consists of three parts: (1) a GalNAc moiety, (2) a linker moiety, and (3) a <i>trans</i>-4-hydroxyprolinol (<i>t</i>HP) branch point. The GalNAc moiety and the <i>t</i>HP moiety are coupled via a condensation reaction to prepare the monovalent GalNAc phosphoramidite. © 2019 by John Wiley &amp; Sons, Inc.</p><p><b>Basic Protocol 1</b>: Synthesis of <i>N</i>-acetylgalactosamine ligand</p><p><b>Basic Protocol 2</b>: Preparation of <i>trans</i>-4-hydroxyprolinol building block</p><p><b>Basic Protocol 3</b>: Preparation of GalNAc phosphoramidite</p>","PeriodicalId":10966,"journal":{"name":"Current Protocols in Nucleic Acid Chemistry","volume":"78 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/cpnc.99","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43651743","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
Full Pre-Steady-State Kinetic Analysis of Single Nucleotide Incorporation by DNA Polymerases DNA聚合酶整合单核苷酸的全预稳态动力学分析
Current Protocols in Nucleic Acid Chemistry Pub Date : 2019-08-28 DOI: 10.1002/cpnc.98
Marleen Renders, Jean-Marie Frère, Dominique Toye, Piet Herdewijn
{"title":"Full Pre-Steady-State Kinetic Analysis of Single Nucleotide Incorporation by DNA Polymerases","authors":"Marleen Renders,&nbsp;Jean-Marie Frère,&nbsp;Dominique Toye,&nbsp;Piet Herdewijn","doi":"10.1002/cpnc.98","DOIUrl":"10.1002/cpnc.98","url":null,"abstract":"<p>By measuring a DNA polymerase incorporation reaction on a very short time scale (5 ms to 10 s) and with a high enzyme concentration, the isolated event of a single nucleotide incorporation can be analyzed. Practically, this is done using a quench-flow instrument, which allows the rapid mixing of the enzyme-primer/template with the nucleotide substrate, after which the reaction is quenched and analyzed. We describe how to titrate the enzyme active site, how to determine, via a scouting experiment, the rate-limiting step in the polymerization reaction, and how to measure the apparent <i>k</i><sub>pol</sub><i>, K</i><sub>d(DNA)</sub>, and <i>K</i><sub>d(N)</sub> using burst or single-turnover experiments. We include equations for the calculation of the processivity of the polymerase, its nucleotide incorporation specificity and preference, and the activation energy difference for the incorporation of an incorrect nucleotide. Data analysis is discussed, as this is an essential part of accurate data generation in kinetic analyses. © 2019 by John Wiley &amp; Sons, Inc.</p>","PeriodicalId":10966,"journal":{"name":"Current Protocols in Nucleic Acid Chemistry","volume":"78 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/cpnc.98","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49022347","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Synthesis of N2-Aryl-2′-Deoxyguanosine Modified Phosphoramidites and Oligonucleotides N2‐芳基‐2′‐脱氧鸟苷修饰的磷酰胺和寡核苷酸的合成
Current Protocols in Nucleic Acid Chemistry Pub Date : 2019-08-01 DOI: 10.1002/cpnc.93
Pratibha P. Ghodke, P. I. Pradeepkumar
{"title":"Synthesis of N2-Aryl-2′-Deoxyguanosine Modified Phosphoramidites and Oligonucleotides","authors":"Pratibha P. Ghodke,&nbsp;P. I. Pradeepkumar","doi":"10.1002/cpnc.93","DOIUrl":"10.1002/cpnc.93","url":null,"abstract":"<p>The <i>N</i><sup>2</sup>-position of 2′-deoxyguanosine (<i>N</i><sup>2</sup>-position in dG) is well known for forming carcinogenic minor groove DNA adducts, which originate from environmental pollutants, chemicals, and tobacco smoke. The <i>N</i><sup>2</sup>-dG DNA adducts have strong implications on biological processes such as DNA replication and repair and may, therefore, result in genomic instability by generating mutations or even cell death. It is crucial to know the role of DNA polymerases when they encounter the <i>N</i><sup>2</sup>-dG damaged site in DNA. To get detailed insights on the in vitro DNA damage tolerance or bypass mechanism, there is a need to synthetically access <i>N</i><sup>2</sup>-dG damaged DNAs. This article describes a detailed protocol of the synthesis of <i>N</i><sup>2</sup>-aryl-dG modified nucleotides using the Buchwald-Hartwig reaction as a main step and incorporation of the modified nucleotides into DNA. In Basic Protocol 1, we focused on the synthesis of five different <i>N</i><sup>2</sup>-dG modified phosphoramidites with varying bulkiness (benzyl to pyrenyl). Basic Protocol 2 describes the details of synthesizing <i>N</i><sup>2</sup>-dG modified oligonucleotides employing the standard solid phase synthesis protocol. This strategy provides robust synthetic access to various modifications at the <i>N</i><sup>2</sup>-position of dG; the modified dGs serve as good substrates to study translesion synthesis and repair pathways. Overall data presented in this article are based on earlier published reports. © 2019 by John Wiley &amp; Sons, Inc.</p>","PeriodicalId":10966,"journal":{"name":"Current Protocols in Nucleic Acid Chemistry","volume":"78 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/cpnc.93","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41461003","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Synthesis of Poly(ADP-ribose) Monomer Containing 2′-O-α-D-Ribofuranosyl Adenosine 含2′‐O‐α‐D‐核糖呋喃基腺苷的聚(ADP‐核糖)单体的合成
Current Protocols in Nucleic Acid Chemistry Pub Date : 2019-07-16 DOI: 10.1002/cpnc.92
Sergey N. Mikhailov, Mikhail S. Drenichev, Vladimir E. Oslovsky, Irina V. Kulikova, Piet Herdewijn
{"title":"Synthesis of Poly(ADP-ribose) Monomer Containing 2′-O-α-D-Ribofuranosyl Adenosine","authors":"Sergey N. Mikhailov,&nbsp;Mikhail S. Drenichev,&nbsp;Vladimir E. Oslovsky,&nbsp;Irina V. Kulikova,&nbsp;Piet Herdewijn","doi":"10.1002/cpnc.92","DOIUrl":"10.1002/cpnc.92","url":null,"abstract":"<p>In this article, the earlier reported procedure for the synthesis of 2′-<i>O</i>-β-<span>D</span>-ribofuranosyl nucleosides was extended to the synthesis of 2′-<i>O</i>-α-<span>D</span>-ribofuranosyl adenosine, a monomeric unit of poly(ADP-ribose). It consists in condensation of a small excess of 1-<i>O</i>-acetyl-2,3,5-tri-<i>O</i>-benzoyl-α,β-<span>D</span>-arabinofuranose activated with tin tetrachloride with 3′,5′-<i>O</i>-tetra-isopropyldisiloxane-1,3-diyl-ribonucleosides in 1,2-dichloroethane. The following debenzoylation and silylation of arabinofuranosyl residue and inversion of configuration at C-2ʹʹ atom of arabinofuranosyl residue and final removal of silyl protective groups gave 2′-<i>O</i>-α-<span>D</span>-ribofuranosyl adenosine in overall 13% to 21% yield. © 2019 by John Wiley &amp; Sons, Inc.</p>","PeriodicalId":10966,"journal":{"name":"Current Protocols in Nucleic Acid Chemistry","volume":"78 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/cpnc.92","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42520046","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
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