## Abstract The noiseβdecoupled and gatedβdecoupled ^13^C n.m.r. spectra of quercetin and rutin are studied and assignments are proposed. The previous assignments of carbons 2 and 4β², carbons 5 and 9, carbons 6 and 8 have been reversed.
The 13C-n.m.r. spectra and the conformations of heptitols in solution
β Scribed by Stephen J. Angyal; Ronan Le Fur
- Publisher
- Elsevier Science
- Year
- 1984
- Tongue
- English
- Weight
- 774 KB
- Volume
- 126
- Category
- Article
- ISSN
- 0008-6215
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β¦ Synopsis
The 13C-n.m.r. signals of the heptitols in aqueous solution, and of their acetates in chloroform solution, have been assigned by the use of specifically deuterium-substituted compounds. From these spectra, the preponderant conformation of each heptitol has been determined, particularly by comparisons with the spectra of the homomorphous hexitols. The results are in good agreement with the predictions made, on the basis of theoretical considerations, by J. A. Mills ten years ago.
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