Identification of cyclopentenyl fatty acids by1H and13C nuclear magnetic resonance
β Scribed by Pierre Blaise; Marie Farines; Jacques Soulier
- Book ID
- 107495137
- Publisher
- Springer-Verlag
- Year
- 1997
- Tongue
- English
- Weight
- 130 KB
- Volume
- 74
- Category
- Article
- ISSN
- 0003-021X
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π SIMILAR VOLUMES
The 13C-NMR spectra of 48 cis alkenoic acids and esters (C8-C20), 18 trans alkenoic acids and esters (C9-C18), and 26 polyenoic acids and esters (C18-C22) are reported and interpreted. The characteristic features of such spectra which permit structural assignments to be made are discussed.
Vicinal 3J(HH) and 3J( 13CH) coupling constants are reported for the two diastereoisomers of p-pbenylaspartic acid at various pH values. A comparison between these coupling constants and those expected from the possible conformations of these molecules allows configurational assignments to be made.