H and 13C N M R data for palitantine and three derivatives, iodopalitantine, palitantol and diacetate palitantine, are reported. Spectral assignment was carried out on the basis of two-dimensional ' H,' H and heteronuclear ' H,' 3C correlation experiments. ## KEYWORDS ' H NMR; 13C NMR; palitantine
Assignment of 13C NMR data of methyl (+)-hardwickiate and its derivatives
β Scribed by Marta Costa; Fred Y. Fujiwara; Paulo M. Imamura
- Publisher
- John Wiley and Sons
- Year
- 1998
- Tongue
- English
- Weight
- 173 KB
- Volume
- 36
- Category
- Article
- ISSN
- 0749-1581
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β¦ Synopsis
Despite the large number of clerodanes isolated as natural products in the last decade, the correct 13C NMR chemical shift assignments of some carbons are still in doubt. In order to provide unambiguous assignments of the chemical shifts of clerodane diterpenes, a complete 13C NMR spectral analysis of methyl (])-hardwickiate and 14 hemisynthetic derivatives is reported.
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