59090-48-1Relevant academic research and scientific papers
Synthesis of a new analog of thymidine for in vivo non-radioactive labeling of DNA
Rodriguez-Tanty,Perez,Miranda,Velez-Castro,Rosado,Macias,Galan,Higginson-Clarke,Riveron
, p. 1113 - 1117 (1999)
The introduction of 6-(p-bromobenzoylamino)caproyl radical in the methyl group of 2'-O-deoxythymidine is described. In vivo incorporation of this nucleoside to DNA was determined using a monoclonal antibody that recognized the radical.
Multinuclear NMR and kinetic analysis of DNA interstrand cross-link formation
Ding, Hui,Tolman, Joel R.,Greenberg, Marc M.,Majumdar, Ananya
, p. 17981 - 17987 (2008)
Recently, a phenylselenyl-modified thymidine (2) was shown to produce DNA interstrand crosslinks (ICLs) via two mechanisms. Photolysis of 2 generates 5-(2′-deoxyuridinyl)methyl radical (1), the reactive intermediate that results from formal hydrogen atom abstraction from the thymine methyl group. This reactive intermediate reacts with the opposing dA and is the first example of a DNA radical that produces ICLs. Kinetic competition studies support the proposal that the rate-limiting step in ICL formation from 1 involves rotation about the glycosidic bond and that the rate constant for this process is influenced by the flanking sequence. Cross-links also form with the opposing dA when 2 is treated with mild oxidants that result in the formation of an intermediate methide-like species (4). Kinetic experiments reveal that 4 reacts with azide, a model nucleophile, via an S42′ pathway. Previous experiments suggested that the same product is produced via 1 or 4 but that the initially formed cross-link rearranges during the enzyme digestion and isolation procedures. In situ product analysis by NMR using synthetic, doubly labeled duplex DNA containing 13C-2 and 15N1-dA provides definitive evidence that the kinetic ICL products formed via the radical and oxidative pathways are the same and correspond to that arising from formal alkylation of N1-dA. Furthermore, analysis of the thermodynamic product formed upon rearrangement indicates that the primary product isomerizes via an associative mechanism in DNA.
Electron-Mediated Aminyl and Iminyl Radicals from C5 Azido-Modified Pyrimidine Nucleosides Augment Radiation Damage to Cancer Cells
Wen, Zhiwei,Peng, Jufang,Tuttle, Paloma R.,Ren, Yaou,Garcia, Carol,Debnath, Dipra,Rishi, Sunny,Hanson, Cameron,Ward, Samuel,Kumar, Anil,Liu, Yanfeng,Zhao, Weixi,Glazer, Peter M.,Liu, Yuan,Sevilla, Michael D.,Adhikary, Amitava,Wnuk, Stanislaw F.
, p. 7400 - 7404 (2018)
Two classes of azido-modified pyrimidine nucleosides were synthesized as potential radiosensitizers; one class is 5-azidomethyl-2′-deoxyuridine (AmdU) and cytidine (AmdC), while the second class is 5-(1-azidovinyl)-2′-deoxyuridine (AvdU) and cytidine (AvdC). The addition of radiation-produced electrons to C5-azido nucleosides leads to the formation of π-aminyl radicals followed by facile conversion to σ-iminyl radicals either via a bimolecular reaction involving intermediate α-azidoalkyl radicals in AmdU/AmdC or by tautomerization in AvdU/AvdC. AmdU demonstrates effective radiosensitization in EMT6 tumor cells.
Carborane- or Metallacarborane-Linked Nucleotides for Redox Labeling. Orthogonal Multipotential Coding of all Four DNA Bases for Electrochemical Analysis and Sequencing
Kodr, David,Yenice, Cansu Pinar,Simonova, Anna,Safti?, Dijana Pavlovi?,Pohl, Radek,Sykorová, Veronika,Ortiz, Mayreli,Havran, Luděk,Fojta, Miroslav,Lesnikowski, Zbigniew J.,O'Sullivan, Ciara K.,Hocek, Michal
supporting information, p. 7124 - 7134 (2021/05/29)
We report a series of 2′-deoxyribonucleoside triphosphates bearing dicarba-nido-undecaborate ([C2B9H11]1-), [3,3′-iron-bis(1,2-dicarbollide)]- (FESAN, [Fe(C2B9H11)2]2-) or [3,3′-cobalt-bis(1,2-dicarbollide)]- (COSAN, [Co(C2B9H11)2]2-) groups prepared either through the Sonogashira cross-coupling or the CuAAC click reaction. The modified dNXTPs were substrates for KOD XL DNA polymerase in enzymatic synthesis of modified DNA through primer extension (PEX). The nido-carborane- and FESAN-modified nucleotides gave analytically useful oxidation signals in square-wave voltammetry and were used for redox labeling of DNA. The redox-modified DNA probes were prepared by PEX using tailed primers and were hybridized to electrode (gold or glassy carbon) containing capture oligonucleotides. The combination of nido-carborane- and FESAN-linked nucleotides with 7-ferrocenylethynyl-7-deaza-dATP and 7-deaza-dGTP allowed polymerase synthesis of DNA fully modified at all four nucleobases, and each of the redox labels gave four differentiable and ratiometric signals in voltammetry. Thus, the combination of these four redox labels constitutes the first fully orthogonal redox coding of all four canonical nucleobases, which can be used for determination of nucleobase composition of short DNA stretches in one simple PEX experiment with electrochemical readout.
One-step to get 5-azidomethyl-2′-deoxyuridine from 5-hydroxymethyl-2′-deoxyuridine and detection of it through click reaction
Xu, Xiaowei,Yan, Shengyong,Hu, Jianlin,Guo, Pu,Wei, Lai,Weng, Xiaocheng,Zhou, Xiang
, p. 9870 - 9874 (2013/10/22)
Nowadays a few ways to synthesize 5-azidomethyl-2′-deoxyuridine from 5-hydroxymethyl-2′-deoxyuridine have been reported. But none of them was one-step. And many of them need to protect the hydroxyl group on the pentose ring. The detection of 5-hydroxymethyl-2′-deoxyuridine is also very important in many biological processes. However few fluorescence detection strategies have been tried to do this. Herein, we reported a one-step protocol to synthesize 5-azidomethyl-2′-deoxyuridine, which was then used for detecting 5-hydroxymethyl-2′-deoxyuridine through a click reaction.
Oxygen independent DNA interstrand cross-link formation by a nucleotide radical
Hong, In Seok,Ding, Hui,Greenberg, Marc M.
, p. 485 - 491 (2007/10/03)
A 5-(2′-Deoxyuridinyl)methyl radical (1) was independently generated from three photochemical precursors and is the first example of a DNA radical that forms interstrand cross-links. Oxygen labeling experiments support generation of 1 by all precursors. I
Synthesis and properties of oligothymidylates incorporating an artificial bend motif
Seio, Kohji,Wada, Takeshi,Sekine, Mitsuo
, p. 162 - 180 (2007/10/03)
The uridylyl-(3' → 5')-thymidine dinucleotide block 14 (cUpdU), having a cyclic structure between the 2'-hydroxy of the upstream uridine and the 5- substituent of the downstream thymidine, was synthesized (Schemes 1 and 2). This cyclic structure is a stab
Synthesis and Biological Activities of 5-(Hydroxymethyl, azidomethyl, or aminomethyl)-2'-deoxyuridine and Related 5'-Substituted Analogues
Shiau, George T.,Schinazi, Raymond F.,Chen, Ming S.,Prusoff, William H.
, p. 127 - 133 (2007/10/02)
The synthesis of 5-(azidomethyl)-2'-deoxyuridine (10) has been accomplished by two independent methods.The first involved tosylation of 5-(hydroxymethyl)-2'-deoxyuridine (1) to furnish a mixture of two mono- and a ditosyl nucleosides which were converted into the corresponding 5-(azidomethyl) (10), 5-(azidomethyl)-5'-azido (14), and 5-(hydroxymethyl)-5'-azido (15) derivatives of 2'-deoxyuridine.The second method was more selective and required the formation of the intermediate 5-(bromomethyl)-3',5'-di-O-acetyl-2'-deoxyuridine (8), followed by displacement of the bromo group by lithium azide and deacetylation.Catalytic hydrogenation of the azides 9, 10, 14, and 15 gave the corresponding amines 16, 2, 6, and 7, repectively.Compounds 1, 2, 10, and 16 inhibited the growth of murine Sarcoma 180 and L1210 in culture, and the activity of 2 was prevented by 2'-deoxypyrimidine nucleosides by not by purine nucleosides.The replication of herpes simplex virus type 1 (HSV-1) was strongly inhibited only by 1 and 10.Studies on the binding of the various thymidine analogues to HSV-1 encoded pyrimidine deoxyribonucleoside kinase indicate that 1 and 10 have good affinity for the enzyme.
