## Abstract An NMR study of five highly functionalized and rearranged abietane diterpenoids is described. In addition to 1D NMR methods, including 1D NOESY spectra, 2D shift‐correlated experiments [^1^H, ^13^C‐gHSQC‐^1^__J__ (C,H) and ^1^H, ^13^C‐gHMBC‐^__n__^__J__ (C,H) (__n__ = 2 and 3)] were use
1H and 13C assignments of five cembrenes from guggul
✍ Scribed by Shi Bai; Mahendra Jain
- Publisher
- John Wiley and Sons
- Year
- 2008
- Tongue
- English
- Weight
- 78 KB
- Volume
- 46
- Category
- Article
- ISSN
- 0749-1581
- DOI
- 10.1002/mrc.2252
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✦ Synopsis
Abstract
Chemical shift assignments of ^1^H and ^13^C of five cembrene compounds isolated from the hexane extract of guggul, the resin of Commiphora mukul, are reported. Using ^1^H, ^13^C, and 2D NMR methods their structures were determined as cembrene (1‐isopropyl‐4,8,12‐trimethyl‐cyclotetradeca‐2,4,7,11‐tetraene), cembrene A (1‐isopropenyl‐4,8,12‐trimethyl‐cyclotetradeca‐4,8,12‐triene), cembrenol (1‐isopropyl‐4,8,12‐trimethyl‐cyclotetradeca‐3,7,11‐trienol), mukulol (1‐isopropyl‐4,8,12‐trimethyl‐ cyclotetradeca‐3,7,11‐trienol), and verticillol (4,8,12,15,15‐pentamethyl‐bicyclo[9.3.1]pentadeca‐3,7‐dien‐12‐ol). Copyright © 2008 John Wiley & Sons, Ltd.
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