Results 181 to 190 of about 137,731 (206)
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Canadian Journal of Chemistry, 1980
The sonolysis of uracil (1) has been studied at 630 kHz in the presence of air, oxygen, nitrogen, and argon. The degradation products were identified by gc–ms analysis. Under aerated conditions the following products were found: uracil glycols (7), isobarbituric acid (8), N-formyl-N′-glyoxylurea (6), 5-hydroxyhydantoin (9), dialuric acid (10), alloxan
R.G. Sutherland +2 more
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The sonolysis of uracil (1) has been studied at 630 kHz in the presence of air, oxygen, nitrogen, and argon. The degradation products were identified by gc–ms analysis. Under aerated conditions the following products were found: uracil glycols (7), isobarbituric acid (8), N-formyl-N′-glyoxylurea (6), 5-hydroxyhydantoin (9), dialuric acid (10), alloxan
R.G. Sutherland +2 more
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Stable Triplet of Uracil−Uracil Basepairs in a Small Antisense RNA
Journal of the American Chemical Society, 2005The interaction between ant (antirepressor) mRNA and its antisense RNA, sar (small antisense RNA), is important in regulation of the development of bacteriophage P22. Sar is 68-69 nucleotides in length and is believed to consist of two hairpin structures separated by a small inter-hairpin region, followed by a short 3' tail [Schaefer and McClure RNA ...
Yiping Zhan, Gordon S. Rule
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Specificities and kinetics of uracil excision from uracil-containing DNA oligomers by Escherichia coli uracil DNA glycosylase [PDF]
Biochemistry, 1991 Uracil DNA glycosylase excises uracil residues from DNA that can arise as a result of deamination of cytosine or incorporation of dUMP residues by DNA polymerase. We have carried out a detailed study to define the specificities and the kinetic parameters for its substrates by using a number of synthetic oligodeoxyribonucleotides of varying lengths and ...
Umesh Varshney, Johan H. van de Sande
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Science, 1962
Explorations in the pyrimidine series have led to the discovery of highly active herbicides, of which 3-butyl-6-methyluracil and 5-bromo-3-isopropyl-6-methyluracil are examples.
Cupery Willis E +4 more
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Explorations in the pyrimidine series have led to the discovery of highly active herbicides, of which 3-butyl-6-methyluracil and 5-bromo-3-isopropyl-6-methyluracil are examples.
Cupery Willis E +4 more
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The Synthesis of Uracils as Anticonvulsants*
Journal of the American Pharmaceutical Association (Scientific ed.), 1955Abstract A convenient laboratory synthesis has been devised by which a series of new 5‐alkyluracils has been prepared for evaluation as anti‐convulsants. Certain other 5‐substituted uracils and their N,N‐dimethyl derivatives, and related compounds, have also been synthesized.
Homer C. Scarborough, J. H. Burckhalter
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Journal of Fluorine Chemistry, 1980
Abstract In view of the importance of the medical applications of fluorinated uracil and derivatives, synthetic methods directed to obtain such compounds are of particular interest. Several aspects of the electrochemical fluorination of uracil in different experimental conditions will be discussed.
Lino Conte +4 more
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Abstract In view of the importance of the medical applications of fluorinated uracil and derivatives, synthetic methods directed to obtain such compounds are of particular interest. Several aspects of the electrochemical fluorination of uracil in different experimental conditions will be discussed.
Lino Conte +4 more
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PHOTOSENSITIZED DIMERIZATION OF URACIL
Photochemistry and Photobiology, 1972Abstract— The four isomeric dimers of uracil were isolated from photochemical reactions which were sensitized by acetone. Product analyses, made on the basis of the chemical properties of the compounds, showed that the h, h dimers predominate. Infrared and mass spectra for the dimers are here presented as well as nuclear magnetic resonance data.
S. Pastra-Landis +2 more
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European Journal of Medicinal Chemistry, 2015
AbstractReview: [71 refs.
Dariusz Cież, Aleksandra Pałasz
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AbstractReview: [71 refs.
Dariusz Cież, Aleksandra Pałasz
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ALTERATION OF URACIL-DNA GLYCOSYLASE ACTIVITY BY URACIL DIMERS IN DNA
Photochemistry and Photobiology, 1981— The effects of UV irradiation on double-stranded PBS-2 phage DNA, which contains uracil in place of thymine, were studied. Irradiation by 254 nm light, or by 313 nm light in the presence of the triplet sensitizer acetophenone, resulted in production of uracil-containing pyrimidine photodimers. DNA chain breaks were also produced under both conditions.
Nahum J. Duker +2 more
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ChemInform Abstract: URACIL. A PERSPECTIVE
Chemischer Informationsdienst, 1978AbstractReview: Der Übersichtsartikel (164 Literaturhinweise) behandelt neben chemischen und physikalischen Eigenschaften, Struktur und Herstellung des Uracils (I) insbesondere seine Reaktionen wie Oxidation und Reduktion, Metallderivate, Reaktionen am Stickstoff und Sauerstoff sowie in 5‐ bzw.
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