Isoalantolactone, the principal constituent of the essential oil of Telekia speciosa (schreb.) Baumg., Asteraceae underground parts

Abstract

In this paper, the results of investigation on chemical composition of the essential oil from underground parts of wild-growing yellow oxeye, Telekia speciosa (Schreb.) Baumg. (Asteraceae) were presented. Essential oil was obtained by distillation of previously dried and ground roots and rhizome, with a yield of 1,73 % (w/w). Using GC and GC/MS, several constituents were detected in the oil. By means of IR, MS, 1H and 13C NMR spectroscopy, the most abundant one (95 % of isolated oil) was identified as isoalantolactone.

U ovom radu prikazani su rezultati ispitivanja hemijskog sastava etarskog ulja podzemnih organa samoniklog crnog omana, Telekia speciosa (Schreb.) Baumg. (Asteraceae). Etarsko ulje je dobijeno destilacijom prethodno osušenog i usitnjenog korena sa rizomom, sa prinosom od 1,73 % . Primenom GC i GC/MS analize, u etarskom ulju je dokazano prisustvo više sastojaka (u tragovima), od kojih je glavni izoalantolakton, koji čini 95 % mase etarskog ulja. Hemijska struktura izoalantolaktona, potvrđena je primenom IR, MS, 1H i 13C NMR spektroskopije.