Assignment of carbon-13 NMR spectra by “J-Scaling”
✍ Scribed by Ray Freeman; Gareth A Morris
- Publisher
- Elsevier Science
- Year
- 1978
- Weight
- 233 KB
- Volume
- 29
- Category
- Article
- ISSN
- 0022-2364
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📜 SIMILAR VOLUMES
## Abstract Two conflicting assignments have been proposed for the ^13^C NMR signals of 3′,5′‐cyclic nucleotides. This communication describes selective decoupling experiments for several cyclic nucleotides which provide the correct assignment based on unambiguous experimental evidence.
## Abstract Carbon‐13 NMR chemical shifts and one‐bond carbon–hydrogen coupling constants have been obtained at 15·09 MHz. The trends in the carbon chemical shifts obtained for the pyrazines parallel those of monosubstituted benzenes and 2‐substituted pyridines, except for the __direct__ effect of