ISSN:
0030-4921
Keywords:
Chemistry
;
Analytical Chemistry and Spectroscopy
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
The natural abundance 15N NMR spectra of glycylglycine and alanylalanine derivatives with various N- or O-protecting groups were measured in dimethyl sulphoxide, pyridine and fornic acid. The nitrogens directly attached to the protecting group have chemical shifts relative to NO3- in the range -220 to -358 ppm. The influence of the amino end group on the next peptide nitrogen (Gly-Gly bond) amounts to, at most, 1.7 ppm. The influence of the O-protecting group is also weak (Δ δ≤2 ppm), but strongly dependent on the solvent.
Additional Material:
3 Tab.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/mrc.1270130507