13C nuclear magnetic resonance studies of anti-inflammatory 2(1H)-quinazolinones.
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چکیده
منابع مشابه
Proton-enhanced 13C nuclear magnetic resonance of lipids and biomembranes.
A recently developed nuclear double resonance technique which permits sensitive detection, together with high resolution, of rare spins in solids or other dipolar-coupled nuclear systems [Pines, Gibby, and Waugh (1973) J. Chem. Phys. 59, 569] has been applied to the study of natural abundance (13)C-nuclear magnetic resonance in lipid mesophases and of selectively labeled carbon sites in bacteri...
متن کامل13C nuclear magnetic resonance spectra of fungal melanins.
The 13C resonance spectra of fungal melanins from Aspergillus niger, Eurotium echinolatum, and Stachybotrys chartarum are reported. The spectra were taken in 5% W/W solution of the substances in 0.1 N NaOD in D2O using the Fourier-transform-technique. The spectra and possible assignments of the bands are discussed. The similarities of these spectra to those of soil humic acids are unexpectedly ...
متن کاملNuclear magnetic resonance spectroscopy: 13C spectra of unsubstituted inositols.
The chemical shifts of (13)C in natural abundance have been obtained from nuclear magnetic resonance spectra of scyllo-, myo-, chiro-, and epi-inositols at 15.1 MHz. A set of empirical substitutent parameters were derived and shown to be moderately successful in correlating the (13)C resonance-line positions for these substances. The substituent parameters conform generally to the idea that ste...
متن کاملA comparison of 13C nuclear magnetic resonance and 14C tracer studies of hepatic metabolism.
The gluconeogenic pathway from 13C-labeled substrates, each of which contained the 14C-labeled counterpart at a tracer level, has been followed in isolated rat liver cells and in isolated perfused mouse liver. The gluconeogenic flux from glycerol, the synthesis of glycogen, the stimulation of glycogenolysis by glucagon, the recycling of triacylglycerol, and an increase in pentose cycle activity...
متن کاملNatural abundance 13C nuclear magnetic resonance studies of human plasma high density lipoproteins.
High resolution proton-decoupled natural abundance ‘:‘C NMR spectra (at 15.18 MHz) of human plasma high density lipoproteins were recorded at 29”C, Yfi”C, and 43°C. Carbon 5 of unesterified cholesterol and the corresponding carbon of cholesteryl esters yield narrow, well resolved resonances. Values of nuclear Overhauser enhancements and integrated intensities for C-5 of free and esterified chol...
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ژورنال
عنوان ژورنال: Chemical and Pharmaceutical Bulletin
سال: 1977
ISSN: 0009-2363,1347-5223
DOI: 10.1248/cpb.25.3018