13C NMR chemical shifts were measured in for Ñuorocarbonyl compounds. Sulfonic DMSO-d 6 derivatives display 4J(C,F) coupling constants for carbonyl groups which are also obtained from non-sulfonic derivatives when they are recorded in acidic solution.
13C NMR studies of methylnucleosides
✍ Scribed by Ching-jer Chang; Dennis J. Ashworth; Lih-Ju Chern; Jose DaSilva Gomes; Chi-Gen Lee; Pih W. Mou; Ramani Narayan
- Publisher
- John Wiley and Sons
- Year
- 1984
- Tongue
- English
- Weight
- 384 KB
- Volume
- 22
- Category
- Article
- ISSN
- 0749-1581
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✦ Synopsis
The "C chemical shifts of 22 methylated ribonucleosides and deoxyribonucleosides have been measured and assigned. The chemical s h i f t ditierences between methylated and unmodified nucleosides are correlated with their characteristic modifications of structure. The significance of the chemical shift and tautomeric variations is discussed.
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