Journal ArticleDOI
Nuclear Magnetic Resonance Spectroscopy. Carbon-13 Spectra of Some Inositols and Their O-Methylated Derivatives
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In this paper, the C nmr spectra of some inositols and their partially O-methylated derivatives are tabulated and discussed, and a system of empirical constants which can be used to estimate the spectral properties of the carbons of these ring systems is derived.Abstract:
The ^(13)C nmr spectra of some inositols and their partially O-methylated derivatives are tabulated and
discussed. Methods of assignment are detailed. A system of empirical constants which can be used to estimate
the spectra of the carbons of these ring systems is derived. The substituent effects are noted to conform generally to the notion that steric or proximity effects are very important sources of chemical-shift differences in these systems.read more
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Flavonoids and alkaloids from leaves of Bauhinia ungulata L
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Proximity and the heteroatom effects on the carbon‐13 chemical shifts of methyl‐substituted phenols, anilines and thiophenols
TL;DR: In this article, upfield substituent-induced 13C chemical shifts for aryl carbons of polymethyl substituted benzenes, phenols, anilines and thiophenols were investigated as a function of the proximity between substituents X and CH3 (X = CH3, NH2, OH and SH).
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Galactose-containing polysaccharides from the human pathogens Sporothrix schenckii and Ceratocystis stenoceras.
TL;DR: Galactomannans present at the cell surface of S. schenckii represent other potential fungal antigens in addition to the already recognized rhamnomannans and their peptide complexes.
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Anomeric Specificity of Phosphofructokinase from Rabbit Muscle
Richard Fishbein,Patricia A. Benkovic,Keith J. Schray,Iris J. Siewers,James J. Steffens,Stephen J. Benkovic +5 more
TL;DR: An absolute stereoselectivity of phosphofructokinase for the β anomer of fructose-6-P thus is indicated and argues against the need for an intervening keto form to accomplish the transphosphorylation process.