Results 191 to 200 of about 4,994,766 (232)

Platinum(IV) Complexes of 3‐ and 4‐Picolinic Acids Containing Ammine or Isopropylamine Ligands – Synthesis, Characteri­zation, X‐ray Structures, and Evaluation of Their Cytotoxic Activity against Cancer Cell Lines

, 2008
The preparation and characterization of the new complexes trans-[PtCl4(NH3)(3-picolinic acid)] (1), trans-[PtCl4{NH2CH(CH3)2}(3-picolinic acid)] (2), trans-[PtCl4(NH3)(4-picolinic acid)] (3), and trans-[PtCl4{NH2CH(CH3)2}(4-picolinic acid)] (4) are ...
M. Macazaga, Jorge Rodríguez, A. Quiroga, Sandra Peregina, A. Carnero, C. Navarro‐Ranninger, R. Medina   +6 more
semanticscholar   +1 more source

Mechanism of copper electrodeposition in the presence of picolinic acid

Electrochimica Acta, 2006
Abstract The influence of picolinic acid (PA) on copper deposition from a slightly acidic sodium sulphate electrolyte has been studied over a wide range of concentration and pH by cyclic voltammetry. The mechanism by which the copper electrodeposition process in the presence of PA takes place, depends on the chemistry and electrochemistry ...
Manuel Lopez Teijelo, Gabriela I. Lacconi, Ana L. Portela   +2 more
openaire   +2 more sources

Substituted benzoic and picolinic acids as foliar sprays against potato common scab

, 1988
SUMMARY Glasshouse tests on potato cv. Arran Banner measured the effects of single early foliar sprays of 18 substituted benzoic and two dichloropicolinic acids on the severity of common scab, caused by soil-borne Streptomyces scabies.
A. H. McIntosh, G. Bateman, K. Chamberlain   +2 more
semanticscholar   +1 more source

α-Picolinic acid as a colorimetric reagent

Analytica Chimica Acta, 1953
Abstract Aluminium, can easily be separated from solutions containing iron or chromium at an optimum pH of 5.8 to 6.85 for iron and at 6.25 to 7.05 for chromium, in the presence of an excess of α-picolinic acid, which acts as a masking agent for both.
Buddhadev Sen, Anil Kumar Majumdar
openaire   +5 more sources

Concurrent quantification of quinolinic, picolinic, and nicotinic acids using electron-capture negative-ion gas chromatography-mass spectrometry.

Analytical Biochemistry, 2002
Quinolinic, picolinic, and nicotinic acids and nicotinamide are end products of the kynurenine pathway from l-tryptophan and are intermediates in the biosynthesis of nicotinamide adenine dinucleotide.
G. A. Smythe, O. Braga, B. Brew, Ross Grant, Gilles J. Guillemin, S. Kerr, D. W. Walker   +6 more
semanticscholar   +1 more source

Role of zinc in blockade of excitotoxic action of quinolinic acid by picolinic acid

Amino Acids, 1998
This study examined whether picolinic acid (PIC) inhibits quinolinic acid (QUIN)-induced excitotoxicity through zinc chelation. Injection of QUIN into the nucleus basalis magnocellularis significantly depleted cortical choline acetyltransferase activity 7 days post injection and PIC inhibited this response. Zinc augmented the QUIN- but not NMDA-induced
Richard J. Beninger, Roland J. Boegman, Khem Jhamandas, S. Flesher   +3 more
openaire   +2 more sources

Synthesis, Characterisation and Luminescent Properties of Lanthanide-Organic Polymers with Picolinic and Glutaric Acids

, 2007
Three new lanthanide(III) complexes (Ln = Sm, Tb and Eu) of picolinic and glutaric acid were prepared and characterised. The crystal structure of the complex [Sm(glu)(pic)(H2O)2] (where Hpic and H2glu stand for picolinic and glutaric acid, respectively ...
Penka I. Girginova, F. Paz, Paula C. R. Soares-Santos, R. Ferreira, L. Carlos, V. Amaral, J. Klinowski, H. Nogueira, T. Trindade   +8 more
semanticscholar   +1 more source

TRICYCLOHEXYLTIN(IV) COMPLEXES WITH PICOLINIC, NICOTINIC AND 5-BROMONICOTINIC ACIDS

, 1999
A series of complexes derived from the reactions of tricyclohexyltin(IV) chloride, (C6H11)SnCl with various carboxylic acids have been synthesized and characterized respectively by using microanalytical, IR, 1 H, 13C and 119Sn NMR spectroscopic methods. (
S. Teoh, D. Tan, G. Yeap, H. Fun
semanticscholar   +1 more source

Macrophage Activating Properties of The Tryptophan Catabolite Picolinic Acid

2003
Recent studies have suggested a role for aminoacid catabolites as important regulators of macrophage (Mphi) activities. We reported previously that picolinic acid (PA), a tryptophan catabolite produced under inflammatory conditions and a costimulus with IFNgamma of Mphi effector functions, is a selective inducer of the Mphi inflammatory protein-1alpha (
Annamaria Rapisarda, Stefano Massazza, Gioia Reffo, Sandra Pastorino, Luigi Varesio, Maria Carla Bosco   +5 more
openaire   +2 more sources

Is picolinic acid a glycine agonist at strychnine-sensitive receptors?

Brain Research, 1990
By means of unit recording and electrophoretic application, the effect of picolinic acid on feline spinal interneurons in situ was studied in comparison with glycine. Picolinic acid inhibited neuronal firing in 60% of neurons and in some cases the inhibitory actions were antagonized by strychnine.
Nobuyoshi Iwata, Toshiyuki Tonohiro, Mitsuo Tanabe, Tsugio Kaneko   +3 more
openaire   +3 more sources