The fragmentation of some C1-OH eudesmanolides has been studied with the aid of an isotopic label and high-resolution mass spectrometry. It has been shown that the most characteristic fragmentation is that with the cleavage of the C1-C10 and C4-C5 bonds. The sesquiterpene lactone arabsin has also been assigned to the C1-OH eudesmanolides and this has been confirmed by its conversion into anhydroarabsin — an α,β-unsaturated ketone.
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Abdullaev, U.A., Rashkes, Y.V., Tarasov, V.A. et al. Mass spectra of some sesquiterpene lactones of the eudesmane series with a C1-OH group. Chem Nat Compd 15, 28–32 (1979). https://doi.org/10.1007/BF00570843
- Mass Spectrometry
- Mass Spectrum
- Organic Chemistry