Collect. Czech. Chem. Commun. 1987, 52, 453-475

Identification of acyl groups occurring in sesquiterpene lactones: Proton and carbon-13 NMR study

Miloš Buděšínský and David Šaman

Institute of Organic Chemistry and Biochemistry, Czechoslovak Academy of Sciences, 166 10 Prague 6


Characteristic 1H NMR parameters of 88 acyl groups, hitherto found as ester substituents in natural sesquiterpenic lactones, were determined from the measured spectra as well as literature data. Characteristic 13C NMR chemical shifts for 45 acyl groups were obtained in the same way; for the remaining acyls with hitherto unknown 13C NMR data the values were calculated on the basis of semiempirical relationships.