Results 61 to 70 of about 11,970 (204)

Speciation studies of binary and ternary complexes formed with oxidovanadium(IV) ion picolinic acid and some amino acids

, 2020
In the present work the chemical speciation of ternary complexes systems formed by VO2+ ion with picolinic acid and the amino acids = α-alanine (HαAla), glycine (HGly), serine (HSer), threonine (HThr), aspartic acid (H2Asp), glutamic acid (H2Glu ...
Waleska Madden (6084383), Giuseppe Lubes (4743588), Joel De Abreu (8222250), Mary Lorena Araujo (6084389), Lino Hernández (6084377), Vito Lubes (6084395), Edgar Del Carpio (6084380)   +6 more
core   +1 more source

Zn(OTf)2‐Catalyzed Dehydrocoupling of Terminal Alkynes with Diisopropylaminoborane: A Modular Route to Mono‐ and Dialkynylboranes

Advanced Synthesis &Catalysis, Volume 368, Issue 10, 19 May 2026.
We report a Zn(OTf)2‐catalyzed dehydrocoupling of terminal alkynes with diisopropylaminoborane (DIPOB), which enables the selective synthesis of mono‐ and dialkynylboranes under mild conditions. This method provides a versatile platform for accessing stable tetracoordinate alkynylborons while effectively suppressing hydroboration side reactions.
Etienne Bequet‐Ermoy, Nicolas Zivic, Gabin Lalande, Laurent Chabaud, Mathieu Pucheault   +4 more
wiley   +1 more source

Highly sensitive analysis of sterol profiles in human serum by LC-ESI-MS/MSs⃞

Journal of Lipid Research, 2008
We have developed a highly sensitive and specific method for the analysis of serum sterol profiles. Sterols in 1 μl of dried serum were derivatized into picolinyl esters (3β-picolinate) and analyzed by liquid chromatography-tandem mass spectrometry (LC ...
Akira Honda, Kouwa Yamashita, Hiroshi Miyazaki, Mutsumi Shirai, Tadashi Ikegami, Guorong Xu, Mitsuteru Numazawa, Takashi Hara, Yasushi Matsuzaki   +8 more
doaj   +1 more source

A Distinct Tryptophan Metabolic Phenotype Marks Severe Fatigue in Quiescent Crohn's Disease

JCC Plus, Volume 1, Issue 3, May 2026.
ABSTRACT Background Fatigue is a common and debilitating symptom in inflammatory bowel disease (IBD), but its underlying mechanisms remain unclear. Altered tryptophan metabolism may contribute to fatigue. Tryptophan is metabolized through the kynurenine, serotonin, and indole pathway, involving host and microbial processes. We aimed to explore the link
Paula I. Metselaar, Mees J. van der Hoff, Naomi V. Wieser, Olaf Welting, Antoine Lefèvre, Camille Dupuy, Patrick Emond, Joep P. M. Derikx, Wouter J. de Jonge, Geert R. A. M. D'Haens, Anje A. te Velde, Mark Löwenberg, Mohammed Ghiboub   +12 more
wiley   +1 more source

Why Osteosarcopenia Matters: Clinical and Investigative Implications

European Journal of Clinical Investigation, Volume 56, Issue 5, May 2026.
Osteosarcopenia: Non‐pharmacological and pharmacological treatment strategies. ABSTRACT Background Osteosarcopenia, the combination of osteoporosis and sarcopenia, is a geriatric syndrome linked to functional decline, falls, and fragility fractures. The interaction among bone, muscle, and their shared pathophysiology is driven by mechanical, metabolic,
Erik Luiz Bonamigo, Marcella Nora Maia, Renata Pinheiro Cavallaro de Oliveira, Régis Gemerasca Mestriner, Ivan Aprahamian, Gustavo Duque   +5 more
wiley   +1 more source

Terahertz spectroscopy and solid-state density functional theory calculations of structural isomers: Nicotinic acid, isonicotinic acid and 2-picolinic acid

, 2017
We report, for the first time to our knowledge, the terahertz (THz) spectra of isonicotinic acid and 2-picolinic acid. The distinct THz spectral differences among these two isomers and nicotinic acid have also been observed, indicating that the THz ...
Chao Song, Ling Ding, Wen-Hui Fan, Xu Chen, Ze-You Chen   +4 more
core   +1 more source

Prediction of Lupus Membranous Nephritis using Reduced Picolinic Acid to Tryptophan Ratio as a Urinary Biomarker: Supporting Data

, 2021
Supporting metabolomics dataset for statistical analysis in "Prediction of Lupus Membranous Nephritis using Reduced Picolinic Acid to Tryptophan Ratio as a Urinary Biomarker"
Anekthanakul, K (via Mendeley Data)
core   +1 more source

Enhancing Lipidomics With High‐Resolution Ion Mobility‐Mass Spectrometry

PROTEOMICS, Volume 26, Issue 4, Page 7-22, April 2026.
ABSTRACT Lipids, indispensable yet structurally intricate biomolecules, serve as critical regulators of cellular function and disease progression. Conventional lipidomics, constrained by limited resolution for isomeric and low‐abundance species, has been transformed by ion mobility‐mass spectrometry (IM‐MS).
Gaoyuan Lu, Shuling Xu, Penghsuan Huang, Lingjun Li   +3 more
wiley   +1 more source

Diaquabis(picolinato N-oxide-κ2O,O′)zinc(II)

Acta Crystallographica Section E, 2008
In the title compound, [Zn(C6H4NO3)2(H2O)2], the Zn atom is located on a centre of inversion and shows a distorted octahedral coordination geometry. Two aqua ligands occupy the axial positions and four O atoms of the two chelating picolinic acid N-oxide ...
Xiu-Bing Li, Run-Ling Shang, Bai-Wang Sun   +2 more
doaj   +1 more source

Synthesis and Coordination Chemistry of Hexadentate Picolinic Acid Based Bispidine Ligands

, 2016
The synthesis and CuII, NiII, ZnII, CoII, and GaIII coordination chemistry of the two isomeric hexadentate N5O ligands 6-[[9-hydroxy-1,5-bis­(methoxycarbonyl)-7-methyl-6,8-bis­(pyridin-2-yl)-3,7-diazabicyclo[3.3.1]­nonan-3-yl]­methyl]­picolinic acid ...
Peter Comba (385228), Katharina Rück (3383417), Hubert Wadepohl (1264056), Chris Orvig (1337916), Laura Grimm (3383414)   +4 more
core   +1 more source