The complete 1H and 13C assignment of the pentacyclic triterpenoid hederagenin (3,23-dihydroxy-12oleanan-28-oic acid) from Nigella sativa was carried out using a two-dimensional approach. The combined use of HMBC and HMQC were applied for the structural assignment and conÐgurational information was
Complete assignment of 1H and 13C NMR spectra of new pentacyclic triterpene acid benzyl esters
✍ Scribed by Robert Weis; Werner Seebacher
- Publisher
- John Wiley and Sons
- Year
- 2002
- Tongue
- English
- Weight
- 85 KB
- Volume
- 40
- Category
- Article
- ISSN
- 0749-1581
- DOI
- 10.1002/mrc.1022
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✦ Synopsis
Abstract
Complete assignments of ^1^H and ^13^C NMR chemical shifts for newly synthesized benzyl esters of oleanolic, ursolic and crataegolic acid based on DEPT, HSQC, HMBC, COSY, TOCSY, NOE and ROESY experiments are reported. Copyright © 2002 John Wiley & Sons, Ltd.
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