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Showing 1-30 of 46 results for "200107" within Papers
Yu-Wei Chen et al.
Chemosphere, 74(8), 1079-1084 (2008-12-09)
The possible abiotic reduction of selenite to form elemental Se was studied under controlled conditions in the presence of ferrous iron. The reduction of selenite and formation of Se (0) was found to be a surface-mediated reaction by iron oxides.
M Teodorczyk et al.
Cell death and differentiation, 22(7), 1192-1202 (2015-01-24)
Cancer stem cells (CSCs) have been implicated in the initiation and maintenance of tumour growth as well as metastasis. Recent reports link stemness to epithelial-mesenchymal transition (EMT) in cancer. However, there is still little knowledge about the molecular markers of
Silvia Lampis et al.
Environmental science and pollution research international, 16(6), 663-670 (2008-12-24)
Selenium is a trace metalloid of global environmental concern. The boundary among its essentiality, deficiency, and toxicity is narrow and mainly depends on the chemical forms and concentrations in which this element occurs. Different plant species-including Brassica juncea-have been shown
SeO2-Mediated Oxidative Transposition of Pauson-Khand Products
Dibrell SE, et al.
Journal of the American Chemical Society, 142(14), 6483-6487 (2020)
Huaibin Shen et al.
Dalton transactions (Cambridge, England : 2003), 39(47), 11432-11438 (2010-10-27)
Here we report a low-cost and "green" phosphine-free route for the size- and shape-controlled synthesis of high-quality zinc blende (cubic) ZnSe nanocrystals. To avoid the use of expensive and toxic solvents such as trioctylphosphine (TOP) or tributylphosphine (TBP), SeO(2) was
Mojtaba Shakibaie et al.
Pharmaceutical biology, 51(1), 58-63 (2012-10-06)
In the present investigation, acute and subacute toxicity of the biogenic Se nanoparticles (Se NPs) has been reported. To characterize the Se NPs produced by a bacterium species and to evaluate their toxicity and impact on clinical chemistry and hematological
Ramesh M Patel et al.
Organic & biomolecular chemistry, 9(18), 6312-6322 (2011-07-28)
The first SeO(2) induced (Z)-selective allylic alcohol formation of dialkyl alkylidenesuccinates has been demonstrated to accomplish one-step syntheses of several essential butenolides and fused butenolides via an unusual E- to Z- carbon-carbon double bond isomerisation followed by the lactonization pathway.
Erik A A Wallén et al.
Organic letters, 9(3), 389-391 (2007-01-26)
[reaction: see text] An efficient synthetic route to Cbz-protected 3-aminomethyl-2-aryl-8-bromo-6-chlorochromones has been developed. 3-Aryl-1-(3-bromo-5-chloro-2-hydroxyphenyl)-2-propen-1-one or 2-aryl-8-bromo-6-chlorochroman-4-one could be reacted under Mannich conditions yielding 2-aryl-8-bromo-6-chloro-3-methylenechroman-4-one, which was further converted to the target compound via an aza-Michael reaction followed by an SeO(2)
Haiying Luo et al.
Colloids and surfaces. B, Biointerfaces, 94, 304-308 (2012-03-02)
In vitro antiproliferative effects of selenium nanoparticles (nanoSe(0), 10-40 μmol/L) on HeLa (human cervical carcinoma) cells and MDA-MB-231 (human breast carcinoma) cells were examined by optical microscopic inspection and MTT assay in the present study. The nanoSe(0) effectively inhibited the
Maria Barsukova-Stuckart et al.
Inorganic chemistry, 51(24), 13214-13228 (2012-12-01)
A total of 16 discrete polyoxopalladates(II) [MO(8)Pd(II)(12)L(8)](n-), with a metal ion M encapsulated in a cuboid-shaped {Pd(12)O(8)L(8)} cage, have been synthesized: the phenylarsonate-capped series (1) L = PhAsO(3)(2-), M = Sc(3+) (ScPhAs), Mn(2+) (MnPhAs), Fe(3+) (FePhAs), Co(2+) (CoPhAs), Ni(2+) (NiPhAs)
Y. Zhang, et al.,
Heterocycles, 83, 2337-2342 (2011)
Shaoxuan Yu et al.
Nanotechnology, 26(14), 145703-145703 (2015-03-19)
Selenium nanoparticles (Se NPs) possess well-known excellent biological activities and low toxicity, and have been employed for numerous applications except as inhibitors to protein glycation. Herein, the present study is carried out to investigate the inhibitory effect of Se NPs
Phuong Le et al.
Nature communications, 10(1), 909-909 (2019-02-24)
The distribution of single-cell properties across a population of cells can be measured using diverse tools, but no technology directly quantifies the biochemical stimulation events regulating these properties. Here we report digital counting of growth factors in single cells using
Yifeng Shen et al.
PloS one, 10(6), e0129689-e0129689 (2015-06-10)
A novel europium ligand 2,2',2'',2'''-(4,7-diphenyl-1,10-phenanthroline-2,9-diyl) bis (methylene) bis (azanetriyl) tetra acetic acid (BC-EDTA) was synthesized and characterized. It shows an emission spectrum peak at 610 nm when it is excited at 360 nm, with a large Stock shift (250 nm).
Z T Zhang et al.
Journal of physics. Condensed matter : an Institute of Physics journal, 25(3), 035702-035702 (2012-12-15)
We report on the investigation of Co and Cu substitution effects on superconductivity and magnetism in Fe(1+y)Te(0.6)Se(0.4) single crystals. The parent Fe(1.01)Te(0.59)Se(0.41) shows a nodeless bulk superconductivity as revealed in heat capacity measurement, which is gradually suppressed by either Co
Yilin Wang et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 79(5), 1311-1315 (2011-06-15)
A novel method has been developed for the synthesis of thioglycolic acid (TGA)-capped CdSe quantum dots (QDs) in an aqueous medium when selenium dioxide worked as a selenium source and sodium borohydride acted as a reductant. The interaction between CdSe
Kewei Chen et al.
Journal of chromatography. A, 1406, 99-108 (2015-06-21)
Phytylated chlorophyll derivatives undergo specific oxidative reactions through the natural metabolism or during food processing or storage, and consequently pyro-, 13(2)-hydroxy-, 15(1)-hydroxy-lactone chlorophylls, and pheophytins (a and b) are originated. New analytical procedures have been developed here to reproduce controlled
Christopher L Rowe et al.
Archives of environmental contamination and toxicology, 60(2), 336-342 (2010-09-30)
Selenium (Se) and vanadium (V) are contaminants commonly found in aquatic systems affected by wastes derived from fossil fuels. To examine their effects on a widely distributed species of amphibian, we exposed gray tree frogs (Hyla versicolor) to Se (as
Takao Tobe et al.
Journal of biological inorganic chemistry : JBIC : a publication of the Society of Biological Inorganic Chemistry, 20(4), 687-694 (2015-03-19)
Selenium (Se) is an essential antioxidative micronutrient but can exert cancer-selective cytotoxicity if the nutritional levels are too high. Selenodiglutathione (GSSeSG) is a primary Se metabolite conjugated with two glutathione (GSH) moieties. GSSeSG has been suggested to be an important
Metal-free synthesis of amides by oxidative amidation of aldehydes with amines in PEG/oxidant system
Liang J, et al.
Tetrahedron, 67(44), 8532-8535 (2011)
Zhen Li et al.
Chemistry and physics of lipids, 158(1), 39-45 (2009-01-17)
Allylic hydroxylated derivatives of the C18 unsaturated fatty acids were prepared from linoleic acid (LA) and conjugated linoleic acids (CLAs). The reaction of LA methyl ester with selenium dioxide (SeO(2)) gave mono-hydroxylated derivatives, 13-hydroxy-9Z,11E-octadecadienoic acid, 13-hydroxy-9E,11E-octadecadienoic acid, 9-hydroxy-10E,12Z-octadecadienoic acid and
Ji-Ming Song et al.
Langmuir : the ACS journal of surfaces and colloids, 23(13), 7321-7327 (2007-05-26)
High-yield synthesis of bamboo-raft-like single-crystalline selenium superstructures has been realized for the first time via a facile solvothermal approach by reducing SeO2 with ethylene alcohol in the presence of cellulose acetate. The formation of a raftlike superstructure with various forms
Electrodeposition of nano-dimensioned FeSe
Chen PY, et al.
Thin Solid Films, 519(23), 8397-8400 (2011)
Zhangrong Lou et al.
Chemical communications (Cambridge, England), 49(24), 2445-2447 (2013-02-19)
Based on a novel strategy for modulating the fluorescence of selenide and selenoxide, we have designed and developed a reversible fluorescent probe for hypochloric acid. And the synthesis, characterization, fluorescence properties, as well as the biological applications in living cells
Vijay P Singh et al.
Chemistry, an Asian journal, 6(6), 1431-1442 (2011-05-11)
The syntheses of selenenate/seleninate esters and related derivatives by aromatic nucleophilic substitution (S(N)Ar) reactions of 2-bromo-3-nitrobenzylalcohol (13) and 2-bromo-3-nitrobenzaldehyde (17) with Na(2)Se(2)/nBuSeNa are described. The reaction of 13 with Na(2)Se(2) at room temperature afforded 7-nitro-1,2-benzisoselenole(3H) (15) instead of the desired
Jing Yu et al.
Scientific reports, 5, 17109-17109 (2015-12-01)
Ternary metal dichalcogenides alloys exhibit compositionally tunable optical properties and electronic structure, and therefore, band gap engineering by controllable doping would provide a powerful approach to promote their physical and chemical properties. Herein we obtained ternary SnS(2-x)Se(x) alloys with tunable
Mahshid Mostafavi et al.
The Korean journal of parasitology, 57(1), 1-8 (2019-03-07)
There is no effective treatment modality available against different forms of leishmaniasis. Therefore, the aim of this study was to improve the penetration and efficacy of selenium and glucantime coupled with niosomes and compared them with their simple forms alone
Selenium (IV) oxide
Hoekstra WJ, et al.
Encyclopedia of Reagents for Organic Synthesis, Second Edition, 1-12 (2001)
Shu A Yao et al.
Chemistry (Weinheim an der Bergstrasse, Germany), 18(30), 9179-9183 (2012-06-26)
Doing things by halves: The dimeric compound (Cp'Ni)(2)(μ(2)-Se(2)) (Cp' = 1,2,3,4-tetraisopropylcyclopentadienyl), shown in the scheme, was investigated by using low temperature X-ray crystallography and X-ray absorption spectroscopy. The Se K-edge energy strongly indicates a Se physical oxidation state of -1.5
Selenium dioxide (SeO2)-A versatile reagent
Maity AC
Synlett, 2008(03), 465-466 (2008)
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