scholarly journals Increasing the Chemical-Shift Dispersion of Unstructured Proteins with a Covalent Lanthanide Shift Reagent

2016 ◽  
Vol 55 (47) ◽  
pp. 14847-14851 ◽  
Author(s):  
Christoph Göbl ◽  
Moritz Resch ◽  
Madeleine Strickland ◽  
Christoph Hartlmüller ◽  
Martin Viertler ◽  
...  
Keyword(s):  
Chemical Shift ◽  
Shift Reagent ◽  
Lanthanide Shift Reagent ◽  
Unstructured Proteins

A 13C nuclear magnetic resonance study of glycals (1,5-Anhydro-hex-1-enitols)

1977 ◽  
Vol 30 (5) ◽  
pp. 1037 ◽  
Author(s):  
AIR Burfitt ◽  
RD Guthrie ◽  
RW Irvine
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Chemical Shift ◽  
Nuclear Magnetic Resonance Study ◽  
Shift Reagent ◽  
Proton Chemical Shift ◽  
Lanthanide Shift Reagent ◽  
Magnetic Resonance Study ◽  
13C Nuclear Magnetic Resonance ◽  
Nuclear Magnetic

A series of D-allal and D-glucal derivatives were examined by 13C N.M.R. spectroscopy. Assignments of 13C resonances were established by standard chemical shift considerations, lanthanide shift reagent and proton chemical shift correlations. Configuration-induced chemical shift variations are reported between the glucal and allal systems.

Lanthanide Induced Enhancement of Enantiomeric Shifts in Chiral Solvents and its Use in the Determination of Optical Purity

1973 ◽  
Vol 51 (22) ◽  
pp. 3726-3732 ◽  
Author(s):  
C. P. R. Jennison ◽  
Donald Mackay
Keyword(s):  
Chemical Shift ◽  
Fractional Crystallization ◽  
Sulfonic Acid ◽  
Optical Purity ◽  
Shift Reagent ◽  
Lanthanide Shift Reagent ◽  
Chemical Shift Difference ◽  
Chiral Shift Reagent ◽  
Simple Molecules

The chemical shift difference (Δv) between corresponding groups in enantiomers in the presence of both a chiral solvent ((−)-2,2,2-trifluorophenylethanol or (+)-1-phenylethylamine) and an achiral lanthanide shift reagent (Eu(dpm)3 or Eu(fod)3) is much greater than in the chiral solvent alone. In general, for simple molecules having one coordination site the Δv was smaller than that obtained with the chiral shift reagent Eu(HFC)3. Comparable values of Δv, however, were obtained with the 1,3,4-oxadiazine derivatives 4a and b, and 5, suggesting that the "chiral solvate shift system" is best suited to differentiating more complex enantiomers having several coordination sites.The shift system was used to determine the optical purity of two partially resolved substances. One of these was the (+)-oxadiazine 4a, produced in the asymmetric isomerization of the bridged pyridazine 3a by (+)-camphor-10-sulfonic acid, and optically enriched by only one fractional crystallization. The enantiomeric enrichment in the isomerization was 4.21 ± 0.08%.

Structure of micelle bound cationic peptides by NMR spectroscopy using a lanthanide shift reagent

2020 ◽  
Vol 56 (19) ◽  
pp. 2897-2900
Author(s):  
James D. Swarbrick ◽  
John A. Karas ◽  
Jian Li ◽  
Tony Velkov
Keyword(s):  
Nmr Spectroscopy ◽  
High Resolution ◽  
Bound State ◽  
Shift Reagent ◽  
Cationic Peptides ◽  
Lanthanide Shift Reagent ◽  
Noesy Spectra

[Tm(DPA)3]3− generates paramagnetic, dispersed 2D transferred NOESY spectra for high-resolution structures of cationic peptides in the LPS micelle bound state.

Conformational study of 3-substituted thietane 1-oxides. Lanthanide shift reagent approach

1979 ◽  
Vol 44 (26) ◽  
pp. 4757-4761 ◽  
Author(s):  
David J. H. Smith ◽  
John D. Finlay ◽  
C. Richard Hall ◽  
J. J. Uebel
Keyword(s):  
Shift Reagent ◽  
Lanthanide Shift Reagent ◽  
Conformational Study
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