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Advances in the synthesis of 5-and 6-substituted uracil derivatives
(Routledge Journals, Taylor & Francis Ltd, 2009-01)
The uracil unit is one of the most important structures in life, it being part of the building blocks of RNA and DNA and other natural products; therefore, it is not surprising that uracil derivatives have important ...
New Fluorinated Pyrazol and Uracil Derivatives: Synthesis and Biological Activity
(American Chemical Society Inc, 2009)
Both fluorinated pyrazoles and uracils are compounds that display very interesting biological activity. This chapter reviews recent work or our group in the development of synthetic strategies for the preparation of new ...
Shape resonance spectra of uracil, 5-fluorouracil, and 5-chlorouracil.
(AIP Publishing LLCNova York, 2014-01-29)
We report on the shape resonance spectra of uracil, 5-fluorouracil, and 5-chlorouracil, as obtained
from fixed-nuclei elastic scattering calculations performed with the Schwinger multichannel method
with pseudopotentials. ...
Insufficient uracil supply in fully aerobic chemostat cultures of Saccharomyces cerevisiae leads to respiro-fermentative metabolism and double nutrient-limitation
(SPRINGER, 2010)
A combination of chemostat cultivation and a defined medium was used to demonstrate that uracil limitation leads to a drastic alteration in the physiology of auxotrophic cells of Saccharomyces cerevisiae. Under this ...
Síntese de porfirinas contendo grupos do tipo uracil fundidos nas posições β-pirrólicas
(Universidade Federal de São CarlosBRUFSCarPrograma de Pós-Graduação em Química - PPGQ, 2014-07-28)
In this work the synthesis of new porphyrin derivatives were proposed. The preparations of new compounds containing uracil groups at β-pirrolic position were studied based on their interest in organics synthesis. We ...
Tautomerism of uracil and related compounds: A mass spectrometry study
(SAGE Publications Ltd, 2018-04)
It has been demonstrated that uracil has a preponderant tautomeric form, but it is also known that different tautomers co-exist in this equilibrium. In this work, mass spectrometry is used as a helpful tool to analyse the ...
Proton-induced ionization of isolated uracil molecules: a theory/experiment confrontation
(Elsevier, 2013-06)
Proton-induced ionization of RNA-uracil target is here theoretically described by two quantum-mechanical models, namely, a first perturbative one developed within the 1st Born approximation and a second one based on the ...
Cross sections for ionization of uracil by MeV-energy-proton impact
(American Physical Society, 2013-11)
Absolute double differential cross sections (DDCS) have been measured for the ionization of gas-phase uracil (C4H4N2O2) by 0.5, 1.0, and 2.0 MeV proton impacts. Measurements were performed by secondary electron spectroscopy ...
Effects of uracil calculi on cell growth and apoptosis in the BBN- initiated Wistar rat urinary bladder mucosa
(1999-07-28)
The different potential of initiated and non-initiated urinary bladder mucosa (UBM) to develop neoplasia was quantitatively evaluated in the male Wistar rat. Initiation of carcinogenesis was accomplished with N-butyl-N-(4- ...