Browsing by Subject "methanol"
Now showing items 1-10 of 10
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Black cohosh (Cimicifuga racemosa L.) protects against menadione-induced DNA damage through scavenging of reactive oxygen species: Bioassay-directed isolation and characterization of active principles
(2002)The roots/rhizomes of Cimicifuga racemosa L. (Nutt.) (black cohosh) have traditionally been used to treat menopausal symptoms through an unknown mechanism of action. In an effort to determine if black cohosh had additional ...
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The conversion of 2-cyano cyanothioformanilides into 3-aminoindole-2- carbonitriles using triphenylphosphine
(2010)2-Cyano cyanothioformanilide 3a reacts with triphenylphosphine in the presence of water to give 2-(cyanomethyleneamino)benzonitrile 4a, 2-(cyanomethylamino)benzonitrile 5, 3-aminoindole-2-carbonitrile 2a and (2-cyanoindo ...
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Model investigations for vanadium-protein interactions: Vanadium(III) compounds with dipeptides and their oxovanadium(IV) analogues
(2002)The reaction of VCl3 with 1,10-phenanthroline and a series of dipeptides (H2dip), having aliphatic as well as aromatic side chains, in methyl alcohol and in the presence of triethylamine affords vanadium(III) compounds of ...
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A new class of ferromagnetically-coupled mixed valence vanadium(IV/V) polyoxometalates
(2003)Reaction of [VVIOCl2(thf)2] with a bidentate nitrogen-donor ligand (L: phen = 1,10-phenanthroline, 5-mephen = 5-methyl-1,10-phenanthroline, bipy = 2,2′-bipyridine, 5,5′-me2bipy = 5,5′-dimethyl-2,2′-bipy) in methyl alcohol, ...
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Qualitative and quantitative determination of COPs in cypriot meat samples using HPLC determination of the most effective sample preparation procedure
(2013)This research work describes the development of a fast high-performance liquid chromatography method for the simultaneous determination of five important cholesterol oxidation products (COPs). The influence of various ...
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Reactions of tetracyanoethylene with N′-arylbenzamidines: A route to 2-phenyl-3 H -imidazo[4,5- b ]quinoline-9-carbonitriles
(2013)Eight 2-phenyl-3H-imidazo[4,5-b]quinoline-9-carbonitriles 15 are prepared in four steps from N′-arylbenzamidines 11 and tetracyanoethylene (TCNE) in ∼70-90% yields. The transformation involves the initial formation of ...
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Sample preparation: A critical step in the analysis of cholesterol oxidation products
(2014)In recent years, cholesterol oxidation products (COPs) have drawn scientific interest, particularly due to their implications on human health. A big number of these compounds have been demonstrated to be cytotoxic, mutagenic, ...
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A single-chain magnet based on linear [MnIII2MnII] units
(2014)The synthesis, structural characterization and magnetic properties of a 1D coordination polymer based on a linear mixed valent [MnIII2MnII] repeating unit are described. It displays single-chain magnet (SCM) behaviour with ...
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Synthetic analogues for oxovanadium(IV) - Glutathione interaction: An EPR, synthetic and structural study of oxovanadium(IV) compounds with sulfhydryl-containing pseudopeptides and dipeptides
(1999)Valuable analogues of the VIVO2+ - glutathione complex have been synthesized and characterized. The reaction of [VIVO(CH3COO)2(phen)] (phen = 1,10-phenanthroline) with the sulfhydryl-containing pseudopeptides (scp) ...
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Trace detection of endogenous human volatile organic compounds for search, rescue and emergency applications
(2015)Since Pauling's paper in the 1970s, interest has increased in volatile organic compounds (VOCs) released from different bio-fluids, such as blood and urine. A number of VOCs reflect internal biochemical pathways occurring ...