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Two-dimensional nuclear magnetic resonance of sesquiterpenes. 4—Application to complete assignment of 1H and 13C NMR spectra of some aromadendrane derivatives

✍ Scribed by Robert Faure; Armand R. P. Ramanoelina; Olivier Rakotonirainy; Jean-Pierre Bianchini; Emile M. Gaydou

Publisher
John Wiley and Sons
Year
1991
Tongue
English
Weight
238 KB
Volume
29
Category
Article
ISSN
0749-1581

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✦ Synopsis

Abstract

The total assignment of the ^1^H and ^13^C NMR spectra of five aromadendrane derivatives, (+)‐aromadendrene (1), (−)‐alloaromadendrene (2), (+)‐ledene (3), (−)‐dehydroaromadendrane (4), (−)‐globulol (5) and (+)‐viridiflorol (6) has been performed. The ^13^C spectral assignment of globulol was achieved from DEPT and double quantum coherence measurements. The concerted application of ^1^H^1^H homonuclear and ^1^H^13^C heteronuclear two‐dimensional chemical shift correlations provided other ^13^C and all ^1^H chemical shifts. Moreover, the ^1^H assignment for compounds 13 was reexamined from the high‐field analysis of proton‐proton coupling constants.

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