Turkish Journal of Chemistry
Grosheimin (1) and cynaropicrin (3) sesquiterpenes were isolated from the flowers of Centaurea helenioides Boiss., an endemic plant of Turkey. The products are known as they occur in another species, but they were isolated and identified for the first time from C. helenioides Boiss. In order to correlate spectral data of grosheimin, its acetyl derivative, 8\alpha -acetyl grosheimin (2) was also prepared. Their structures were deduced by FT-IR, UV, 1D and 2D NMR, LC MS/MS, GC-mass spectra (EI), optical rotation, and chemical methods.
Centaurea helenioides Boiss., Compositae, Sesquiterpene lactones, Grosheimin, Cynaropicrin
YAYLI, NURETTİN; BALTACI, CEMALETTİN; GÖK, YAŞAR; AYDIN, EBRU; and ÜÇÜNCÜ, OSMAN (2006) "Sesquiterpene lactones from Centaurea helenioides Boiss," Turkish Journal of Chemistry: Vol. 30: No. 2, Article 11. Available at: https://journals.tubitak.gov.tr/chem/vol30/iss2/11