## Abstract ^17^O chemical shifts of four amino acids at natural abundance have been obtained. Sensitivity was enhanced by accumulating a large number of scans or employing high concentrations at elevated temperature. Routine memory overflow was avoided by using a combination of solvent suppression
17O nuclear magnetic resonance studies of some enriched amino acids
✍ Scribed by Roger Hunston; Ioannis P. Gerothanassis; Jürgen Lauterwein
- Publisher
- John Wiley and Sons
- Year
- 1982
- Tongue
- English
- Weight
- 222 KB
- Volume
- 18
- Category
- Article
- ISSN
- 0749-1581
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
The ^17^O NMR chemical shifts of five enriched amino acids have been measured under strictly controlled conditions of concentration, ionic strength, pH and temperature. The α, β and α, γ carboxyl resonances of aspartic and glutamic acid, respectively, have been resolved. Line widths were examined as a function of solution viscosity.
📜 SIMILAR VOLUMES
A method for the accurate determination of 13C enrichments in nonprotonated carbon atoms of organic compounds that makes use of unresolved 13C satellites of proton(s) bonded to the vicinal carbon atom was developed. Using glutamate as a model molecule, this 1H nuclear magnetic resonance (NMR) invers
## Abstract Structurally related acyclic and cyclic __N__‐nitroso‐__N__‐alkyl amino acids were prepared and their ^1^H, ^13^C and ^15^N NMR spectra were investigated. The changes in the ^13^C NMR spectra of the __N__‐nitroso α‐amino acids after dissolving in solvents suggest that they posses the __
C chemical shifts and ''P,l'C spin-spin coupling constants are reported for six model phosphinates and eight synthetic phosphinolipids. The complex spectra of the synthetic phosphinolipids could be assigned from increments and couplings derived from the model compounds. Based on these investigations