Mass-spectrometric study of the sesquiterpene lactone grossmisin and its derivatives

Autor: Zakharov, P. I., Terent'ev, P. B., Konovalova, O. A., Rybalko, K. S.
Zdroj: Chemistry of Natural Compounds; May 1977, Vol. 13 Issue: 3 p293-296, 4p
Abstrakt: The dissociative ionization of grossmisin [O–D]grossmisin, and two of its derivatives have been studied. The appearance of the main fragments in the mass spectrum of grossmisin is due to the elimination by the M+ ion of H2O and CO molecules and CH3 and OH radicals in various sequences. The hypothesis has been put forward that in the splitting off of a CH3COOH molecule by the M ion of acetylgrossmisin a rearrangement of the lactone ring takes place with its reclosure at the C6 carbon atom of the seven-membered ring.
Databáze: Supplemental Index