Results 161 to 170 of about 2,820 (183)

INHIBITION OF PKC AND PKA BY CHEMOPREVENTIVE ORGANOSELENIUM COMPOUNDS

International Journal of Oncology, 1995
Numerous efficacy studies in rodents revealed that 1,4-phenylenebis(methylene)-selenocyanat (p-XSC) is a more effective chemopreventive organoselenium compound and less toxic than benzyl selenocyanate (BSC) or the inorganic compound Na2SeO3. To explore mechanisms which mediate chemopreventive activities of p-XSC we have tested its effect on protein ...
P, Foiles, H, Fujiki, M, Suganuma, S, Okabe, J, Yatsunami, L, Miglietta, P, Upadhyaya, K, Elbayoumy, Z, Ronai   +8 more
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Organocatalytic Asymmetric Synthesis and Use of Organoselenium Compounds

Synlett, 2012
In the last ten years organocatalysis has emerged as an efficient and sustainable strategy for the asymmetric synthesis of chiral molecules. Optically active intermediates for novel interesting transformations are generated under mild and operationally simple conditions when selenium-containing compounds are used as reaction partners.
Marini F., Sternativo S.
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Dehalogenation of Halogenated Nucleobases and Nucleosides by Organoselenium Compounds

Chemistry – A European Journal, 2019
AbstractHalogenated nucleosides, such as 5‐iodo‐2′‐deoxyuridine and 5‐iodo‐2′‐deoxycytidine, are incorporated into the DNA of replicating cells to facilitate DNA single‐strand breaks and intra‐ or interstrand crosslinks upon UV irradiation. In this work, it is shown that the naphthyl‐based organoselenium compounds can mediate the dehalogenation of ...
Santanu Mondal, Govindasamy Mugesh
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Mechanisms of mammary cancer chemoprevention by organoselenium compounds

Mutation Research - Fundamental and Molecular Mechanisms of Mutagenesis, 2004
Searching for optimal diets and for naturally occurring agents in routinely consumed foods that may inhibit cancer development, although challenging, constitutes a valuable and plausible approach to finding ways to control and prevent cancer. To date, the use of the micronutrient selenium in human clinical trials is limited but the outcome of these ...
Karam, El-Bayoumy, Raghu, Sinha
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Sigmatropic rearrangements of organoselenium compounds

1999
Abstract In the field of synthetic organoselenium chemistry, [2,3]sigmatropic rearrangements of allylic selenium compounds and selenoxide eliminations (see Chapter 2) are the most fundamental reactions. A typical [2,3]sigmatropic rearrangement involves a transfer of oxygen from the selenium atom to the carbon atom of an allylic ...
Yoshiaki Nishiba Y Ashi, Sakae Uemura
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Study of polymorphism of organosulfur and organoselenium compounds

Journal of Thermal Analysis and Calorimetry, 2010
The thermal behavior of a series of organosulfur and organoselenium compounds has been studied by means of differential scanning calorimetry, X-ray diffraction, and thermomicroscopy in order to investigate their polymorphism. In this study, the polymorphism of some of the products has been established. The results of the experiments show that there are
Daniel Plano, Elena Lizarraga, Juan Antonio Palop, Carmen Sanmartín   +3 more
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Structural aspects of some organoselenium compounds

Structural Chemistry, 2006
The crystal structures of four organoselenium compounds, viz. bis(2-formylphenyl)diselenide (5), bis(2-methylnaphthyl)diselenide (6), organoselenenyl sulfide (7), and spiroselenurane (8) are described. Crystal data for 5: space group Pca21, crystal system orthorhombic, a=7.9969(4) A, b=20.8794(12) A, c=15.8307(13) A, Z=8, R=0.0292.
KUMAR, S, PANDA, S, SINGH, HB, WOLMERSHAUSER, G, BUTCHER, RJ   +4 more
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ChemInform Abstract: PHOTOCHEMISTRY OF ORGANOSELENIUM COMPOUNDS

Chemischer Informationsdienst, 1974
AbstractDie Belichtung von Dibenzyldiselenid (I) in Gegenwart von Suerstoff ergibt unter Abspaltung von Selen Benzaldehyd (II).
W. STANLEY, M. R. VAN DE MARK, P. L. KUMLER   +2 more
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Organoselenium Compounds as the Oxidants and Oxidation Catalysts

Phosphorus, Sulfur, and Silicon and the Related Elements, 1998
Useful oxidative conversions of halomethylarenes and aromatic alcohols into aldehydes, oxidation of aldehydes, ketones and their azomethine derivatives into carboxy esters, phenols, nitriles and carboxylic acids, epoxidation of low reactive vinylbenzenes, ketone regeneration from ketazines, and selective oxidation of sulfides have been elaborated ...
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Analysis of Organoselenium Compounds

Industrial & Engineering Chemistry Analytical Edition, 1946
J.D. McCullough, T.W. Campbell, N.J. Krilanovich   +2 more
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