The natural abundance carbon-13 magnetic resonance spectra of a series of antihistamines (pheniramine, chlorpheniramine, methapyrilene, tripelennamine, pyrilamine, and thonzylamine) were detemined using the pulse Fourier transform technique. The chemical shifts were assigned with the aid of long-range carbon-13-hydrogen coupling constants.
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http://dx.doi.org/10.1002/jps.2600650716 | DOI Listing |
Pest Manag Sci
January 2025
School of Chemistry and Chemical Engineering, Guangxi University, Nanning, P. R. China.
Background: Plant diseases cause huge losses in agriculture worldwide every year, but the prolonged use of current commercial fungicides has led to the development of resistance in plant pathogenic fungi. Therefore, there is an urgent need to develop new, efficient, and green fungicides.
Results: Twenty-three nootkatone-based thiazole-hydrazone compounds were designed, synthesized, and characterized by Fourier-transform infrared (FTIR), proton (H) nuclear magnetic resonance (NMR), carbon-13 (C) NMR, and high-resolution mass spectrometry (HRMS).
JACS Au
December 2024
Materials Discovery Laboratory (MaD Lab), Department of Chemistry, Oregon State University, Corvallis, Oregon 97331, United States.
The capture of carbon dioxide (CO) is crucial for reducing greenhouse emissions and achieving net-zero emission goals. Metal-organic frameworks (MOFs) present a promising solution for carbon capture due to their structural adaptability, tunability, porosity, and pore modification. In this research, we explored the use of a copper (Cu(II))-based MOF called .
View Article and Find Full Text PDFJ Agric Food Chem
January 2025
College of Plant Protection, Northwest A&F University, Yangling 712100, Shaanxi, China.
Nitrogen-containing heterocycles have attracted attention for the development of chemicals because of their many types, high physiological activities, and ease of synthesis. Aphids are severe pests found worldwide that cause serious losses in crop yield and quality every year. In this study, a series of novel dienolone thiazole derivatives were synthesized using dienolone acetate as the parent molecule.
View Article and Find Full Text PDFJ Am Chem Soc
January 2025
Nantes Université, CNRS, CEISAM, UMR 6230, F-44000 Nantes, France.
NMR is a central tool in the field of metabolomics, thanks to its ability to provide valuable structural and quantitative information with high precision. Most NMR-based metabolomics studies rely on 1D H detection, which is heavily limited by strong peak overlap. C NMR benefits from a wider spectral dispersion and narrower signal line width but is barely used in metabolomics due to its low sensitivity.
View Article and Find Full Text PDFNMR Biomed
January 2025
The MR Research Centre, Department of Clinical Medicine, Aarhus University, Aarhus, Denmark.
Mild traumatic brain injuries (TBIs) are frequent in the European population. The pathophysiological changes after TBI include metabolic changes, but these are not observable using current clinical tools. We aimed to evaluate multinuclear MRI as a mean of assessing these changes.
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