ISSN:
0749-1581
Keywords:
13C NMR spectra
;
Coumarins
;
Pyranocoumarins
;
Khellactones
;
Khellactone esters
;
Chemistry
;
Analytical Chemistry and Spectroscopy
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
The 13C NMR data of several khellactone derivatives are reported. 1H NMR-based stereochemical criteria are evaluated, and a new criterion based on 13C NMR is proposed to establish the relative configuration at C-3′ and C-4′ using ΔδC-3′ between trans and cis isomers and Δδgem(Me)2 values. The structure of trans-4′-methylkhellactone was determined by x-ray analysis.
Additional Material:
2 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/mrc.1260270709
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