## Abstract COSY, one‐bond and long‐range HETCOR NMR spectra were used in combination for the complete ^1^H and ^13^C assignments of the cytotoxic triterpene saponaceolide B. Stereochemical assignments were based on a NOESY spectrum.
Applications of two-dimensional NMR in spectral assignments of some friedelanes and secofriendelanes
✍ Scribed by Amarendra Patra; Swapan K. Chaudhuri; Aditi K. Acharyya
- Publisher
- John Wiley and Sons
- Year
- 1990
- Tongue
- English
- Weight
- 325 KB
- Volume
- 28
- Category
- Article
- ISSN
- 0749-1581
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
Carbon‐13 spectral assignments of three friedelanes and nineteen secofriedelanes have been made from mutual correlations, 2D X‐H correlation analyses and comparison with the carbon shifts of friedelin, which were firmly established by an INADEQUATE experiment that required reassignment of some of its resonances. Specific methyl and methine proton resonance assignments for some friedelanes, established from X‐H correlation studies, are also reported.
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