611-53-0Relevant articles and documents
Fluorogenic Labeling of 5-Formylpyrimidine Nucleotides in DNA and RNA
Samanta, Biswajit,Seikowski, Jan,H?bartner, Claudia
, p. 1912 - 1916 (2016)
5-Formylcytosine (5fC) and 5-formyluracil (5fU) are natural nucleobase modifications that are generated by oxidative modification of 5-methylcytosine and thymine (or 5-methyluracil). Herein, we describe chemoselective labeling of 5-formylpyrimidine nucleotides in DNA and RNA by fluorogenic aldol-type condensation reactions with 2,3,3-trimethylindole derivatives. Mild and specific reaction conditions were developed for 5fU and 5fC to produce hemicyanine-like chromophores with distinct photophysical properties. Residue-specific detection was established by fluorescence readout as well as primer-extension assays. The reactions were optimized on DNA oligonucleotides and were equally suitable for the modification of 5fU- and 5fC-modified RNA. This direct labeling approach of 5-formylpyrimidines is expected to help in elucidating the occurrence, enzymatic transformations, and functional roles of these epigenetic/epitranscriptomic nucleobase modifications in DNA and RNA. Shining a light on formylpyrimidines: Mild and orthogonal reaction conditions were established for fluorogenic aldol condensation reactions to generate hemicyanine-like chromophores in DNA and RNA for the residue-specific detection of 5-formyluracil and 5-formylcytosine, which are two naturally occurring oxidized analogues of 5-methylated pyrimidine nucleobases.
Synthesis of Phosphoramidite Monomers Equipped with Complementary Bases for Solid-Phase DNA Oligomerization
Romero-Pérez, Sonia,López-Martín, Isabel,Martos-Maldonado, Manuel C.,Somoza, álvaro,González-Rodríguez, David
supporting information, p. 41 - 45 (2020/01/03)
We describe the preparation of two monomers that bear complementary nucleobases at the edges (guanine-2′-deoxycytidine and 2-aminoadenine-2′-deoxyuridine) and that are conveniently protected and activated for solid-phase automated DNA synthesis. We report the optimized synthetic routes leading to the four nucleobase derivatives involved, their cross-coupling reactions into dinucleobase-containing monomers, and their oligomerization in the DNA synthesizer.
BUILDING BLOCKS AND METHODS FOR THE SYNTHESIS OF 5-HYDROXYMETHYLCYTOSINE-CONTAINING NUCLEIC ACIDS
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Paragraph 0052-0055, (2013/09/26)
The present invention relates to building blocks and methods for the efficient synthesis of 5-hydroxymethylcytosine-containing nucleic acids such as DNA or RNA.
RADIOLABELED NUCLEOSIDE ANALOGUE, AND PREPARATION METHOD AND USE THEREOF
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, (2012/07/27)
A radiolabeled nucleoside analogue is provided, which includes radioactive iodine 123I/131I, and a nucleoside analogue selected from a group consisting of cytidine, thymidine, uridine, and a derivative thereof. A method for preparing the radiolabeled nucleoside analogue, and a use thereof are further provided. The nucleoside analogue, prepared through the preparation method with a short synthesis time and a high radiochemical yield, has a long in vivo physiological half life and a high stability in serum, and, as a radiopharmaceutical composition, is useful in development of tumor proliferation diagnosis or therapy prognosis evaluation, and further assists in observation of long-time in vivo metabolism of a drug.
NUCLEIC ACIDSBUILDING BLOCKS AND METHODS FOR THE SYNTHESIS OF 5-HYDROXYMETHYLCYTOSINE-CONTAINING
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Page/Page column 13; 14, (2012/05/31)
The present invention relates to building blocks and methods for the efficient synthesis of 5-hydroxymethylcytosine-containing nucleic acids such as DNA or RNA.
Exploring the ribose sub-pocket of the substrate-binding site in escherichia coli IspE: Structure-based design, synthesis, and biological evaluation of cytosines and cytosine analogues
Schuetz, Andri P.,Osawa, Sho,Mathis, Jennifer,Hirsch, Anna K. H.,Bernet, Bruno,Illarionov, Boris,Fischer, Markus,Bacher, Adelbert,Diederich, Francois
scheme or table, p. 3278 - 3287 (2012/07/28)
The enzymes of the non-mevalonate pathway for the isoprenoid biosynthesis are promising targets for the development of selective drugs for the treatment of important infectious diseases. This pathway is used by plants, many eubacteria, and apicomplexan pr
Synthesis of novel nucleoside 5′-triphosphates and phosphoramidites containing alkyne or amino groups for the postsynthetic functionalization of nucleic acids
Vasilyeva, Svetlana V.,Budilkin, Boris I.,Konevetz, Dmitrii A.,Silnikov, Vladimir N.
body text, p. 753 - 767 (2012/07/28)
A series of novel nucleoside 5′-triphosphates and phosphoramidites containing alkyne or amino groups for the postsynthetic functionalization of nucleic acids were designed and synthesized. For this purpose, the new 3-aminopropoxypropynyl linker group was used. It contains two alternative functional capabilities: an amino group for the reaction of amino-alkynyl- modified oligonucleotides with corresponding activated esters and an alkyne group for the copper(I)-catalyzed azide-alkyne cycloaddition (CuAAC) reaction. It was shown that a variety of methods of the attachment of the new linker can be used to synthesize a diversity of modified pyrimidine nucleosides. Copyright Taylor and Francis Group, LLC.
Efficient synthesis of 5-hydroxymethylcytosine containing DNA
Muenzel, Martin,Globisch, Daniel,Trindler, Christian,Carell, Thomas
supporting information; experimental part, p. 5671 - 5673 (2011/03/20)
5-Hydroxymethylcytosine (5-HOMedC) was recently discovered as the sixth base in the mammalian genome. The development of a new phosphoramidite building block is reported, which allows efficient synthesis of 5-HOMedC containing DNA. K
Highly efficient method for C-5 halogenation of pyrimidine-based nucleosides in ionic liquids
Kumar, Vineet,Yap, Jeremy,Muroyama, Andrew,Malhotra, Sanjay V.
experimental part, p. 3957 - 3962 (2010/03/26)
A novel, highly efficient, convenient, and benign methodology for C-5 halogenation of pyrimidine-based nucleosides has been developed using N-halosuccinimides as halogenating reagents without using any catalyst in ionic liquid medium. The ionic liquids were successfully recovered and reused for all the reactions. Georg Thieme Verlag Stuttgart.
Alkynylamino-nucleotides
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, (2008/06/13)
Alkynylamino-nucleotides and labeled alkynylaminonucleotides useful, for example, as chain terminating substrates for DNA sequencing are provided along with several key intermediates and processes for their preparation. For some applications, longer, hydrophilic linkers are provided.