Results 21 to 30 of about 3,949 (150)

The comparative study of linear solvatation energy relationship for the reactivity of pyridine carboxylic acids with diazodiphenylmethane in protic and aprotic solvents [PDF]

open access: yesJournal of the Serbian Chemical Society, 2012
Protic and aprotic solvent effects on the reactivity of picolinic, nicotinic and isonicotinic acid, as well as of some substituted nicotinic acids with diazodiphenylmethane (DDM) were investigated.
Drmanić Saša Ž.   +3 more
doaj   +1 more source

What if Cocrystallization Fails for Neutral Molecules? Screening Offered Eutectics as Alternate Pharmaceutical Materials: Leflunomide-a Case Study [PDF]

open access: yesPharmaceutical Sciences, 2019
Background: The manuscript is aimed to optimize the biopharmaceutical parameters of a poorly soluble, neutral anti-rheumatic drug ‘leflunomide’ by preparing its non-covalent derivatives (NCDs).
Madhu Bala   +2 more
doaj   +1 more source

RELAXATION OF ISOLATED AORTA OF THE RABBIT BY PICOLINIC ACIDS [PDF]

open access: yesBritish Journal of Pharmacology, 1977
When the isolated thoracic aorta of the rabbit was contracted with prostaglandin F2α, 5‐alkylpicolinic acids produced dose‐dependent relaxations. Picolinic acid, 2,5‐pyridinedicarboxylic acid and 5‐acetylpicolinic acid which do not have the 5‐alkyl residue failed to relax blood vessels.
M, Asano, H, Hidaka
openaire   +2 more sources

Iron-Catalyzed Oxidation of 1-Phenylethanol and Glycerol With Hydrogen Peroxide in Water Medium: Effect of the Nitrogen Ligand on Catalytic Activity and Selectivity

open access: yesFrontiers in Chemistry, 2020
The iron(II) complexes [Fe(bpy)3](OTf)2 (bpy = 2,2'-bipyridine; OTf = CF3SO3) (1) and [Fe(bpydeg)3](OTf)2 (bpydeg = N4,N4-bis(2-(2-methoxyethoxy)ethyl) [2,2'-bipyridine]-4,4'-dicarboxamide) (2), the latter being a newly synthesized ligand, were employed ...
Dimitri Ros   +3 more
doaj   +1 more source

Cytokines and tryptophan metabolites can predict depressive symptoms in pregnancy

open access: yesTranslational Psychiatry, 2022
Depression during and after pregnancy affects up to 20% of pregnant women, but the biological underpinnings remain incompletely understood. As pregnancy progresses, the immune system changes to facilitate fetal development, leading to distinct ...
Qiong Sha   +10 more
doaj   +1 more source

The Physiological Action of Picolinic Acid in the Human Brain [PDF]

open access: yesInternational Journal of Tryptophan Research, 2009
Picolinic Acid is an endogenous metabolite of L-tryptophan (TRP) that has been reported to possess a wide range of neuroprotective, immunological, and anti-proliferative affects within the body. However the salient physiological function of this molecule is yet to be established.
R S, Grant, S E, Coggan, G A, Smythe
openaire   +2 more sources

Polymorphism in the 1/1 Pterostilbene/Picolinic Acid Cocrystal [PDF]

open access: yesCrystal Growth & Design, 2021
The crystal structures of two new polymorphs of the 1/1 pterostilbene/picolinic acid cocrystal have been analyzed by single-crystal X-ray diffraction and studied by means of DFT calculations and a set of computational tools (QTAIM, NCIplot, MEP). The observation of a new R2 2(10) synthon in each of the two polymorphs has been analyzed energetically ...
Rafael Barbas   +3 more
openaire   +3 more sources

3-Hydroxypyridinium-2-carboxylate

open access: yesActa Crystallographica Section E, 2011
Comparable to many amino acids, the title compound, C6H5NO3, is a substitution product of picolinic acid. The molecule shows approximate non-crystallographic Cs symmetry. Like many amino acids, the molecule is present in its zwitterionic state. Intra- as
Richard Betz, Thomas Gerber
doaj   +1 more source

Solubility and Crystallization Studies of Picolinic Acid

open access: yesCrystals, 2023
Solubility and crystallization studies of a monocarboxylic derivative of pyridine, picolinic acid (2-pyridinecarboxylic acid), were undertaken as a need for new data in the literature was identified. Moreover, comparative studies of structurally related small molecules, such as these pyridinecarboxylic acid isomers (picolinic acid (PA), nicotinic acid (
Diogo S. Baptista   +2 more
openaire   +2 more sources

Similarity Between the Action of Pteridines and Tryptophan Metabolites on Lipid Metabolism

open access: yesPteridines, 1999
Incorporation of fatty acids into phospholipids has been investigated using samples of rat liver tissue homogenate, Krebs-Ringer-phosphate buffer (pH=7.4) containing 0.3% albumin, fatty acid mixture and glycerol. The addition of anthranilic acid (2.2 and
Rudzite Vera   +3 more
doaj   +1 more source

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