Results 171 to 180 of about 4,617 (218)

Organoselenium and Organotellurium Compounds:  Toxicology and Pharmacology

Chemical Reviews, 2004
AbstractFor Abstract see ChemInform Abstract in Full Text.
Cristina W, Nogueira, Gilson, Zeni, João B T, Rocha   +2 more
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Organoselenium Compounds in Cancer Chemoprevention

Mini-Reviews in Medicinal Chemistry, 2008
Selenium is an important trace element involved in different physiological functions of human body. Knowledge of selenium in biology of cancer has increased at rapid rate especially during last two decades. Basic research and clinical studies involving animal models and more recently studies in human strongly support the protective role of selenium ...
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Organoselenium compounds as fluorescent probes

Coordination Chemistry Reviews, 2015
Abstract Fluoroprobes are compounds which detect analytes (neutral molecules and ions) by simple, inexpensive, and fast fluorimetric responses. In this review, we provide insights into the development of new organoselenium compounds as fluoroprobes for detecting various analytes. These organoselenium fluoroprobes are capable of metal cation and anion
Snigdha Panda, Arunashree Panda, Sanjio S. Zade   +2 more
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Organoselenium Compounds in Medicinal Chemistry

ChemMedChem
AbstractThe chemical and biological interest in this element and the molecules bearing selenium has been exponentially growing over the years. Selenium, formerly designated as a toxin, becomes a vital trace element for life that appears as selenocysteine and its dimeric form, selenocystine, in the active sites of selenoproteins, which catalyze a wide ...
Carola Gallo‐Rodriguez, Juan B. Rodriguez   +1 more
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Carbonyl transposition on organoselenium compounds

Tetrahedron, 1997
Abstract Carbonyl conjugated vinylic selenides undergo 1,3 and 1,5-carbonyl transposition sequences through organometallic reagents addition reactions followed by acid hydrolysis.
João V. Comasseto, Wai L. Lo, Nicola Petragnani   +2 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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Asymmetric Synthesis of Chiral Organoselenium Compounds

Current Organic Chemistry, 2006
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Chengjian Zhu, Yijun Huang
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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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Separation of organoselenium compounds and their electrochemical detection

Analytical and Bioanalytical Chemistry, 2004
A simplified procedure based on ion-exchange separation of selenourea (Se-U) and selenocystamine (Se-CM), which have very close half-wave potential when they are simultaneously analyzed by voltammetric techniques, has been developed and optimized. Thus, selenocystamine remains in the cation exchanger Purolite C 100 H, whereas selenourea is found in the
Maria Th, Ochsenkühn-Petropoulou, Fotios N, Tsopelas   +1 more
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Thermodynamics of organoselenium and organotellurium compounds

Russian Chemical Reviews, 1995
Experimental values of the enthalpies of formation (ΔHf°) and of the specific heat (Cp°) of the organic compounds of selenium and tellurium, are discussed, including their complexes with dialkylzinc and dialkylcadmium. Different forms of the methods of combustion enthalpy and of reaction calorimetry, used to determine ΔHf° values, are examined.
V I Tel'noy, M S Sheiman
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