ISSN:
0749-1581
Schlagwort(e):
Chemistry
;
Analytical Chemistry and Spectroscopy
Quelle:
Wiley InterScience Backfile Collection 1832-2000
Thema:
Chemie und Pharmazie
Notizen:
Complete 13C NMR spectral assignments were made for wyosine, 4,9-dihydro-4,6-dimethyl-9-oxo-3-(β-D-ribofuranosyl)imidazo [1,2-a]purine, a hpermodified, fluorescent nucleoside of transfer RNAs, and its isomers methylated at N-5 and at N-1. The influence of the position of N-methylation on the 13C chemical shifts of the tricyclic nucleoside is discussed. In relation to the parent N-unsubstituted compound, the most pronounced changes of chemical shifts appear in wyosime. Chemical shift data for the sugar moiety suggest that the population of the anti conformer in wyosine is higher than in the other tricyclic nucleosides.
Zusätzliches Material:
1 Ill.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1002/mrc.1260231108
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