Sesquiterpene lactones from Centaurea helenioides Boiss

Authors : Nurettin YAYLI, Cemalettin BALTACI, Yaşar GÖK, Ebru AYDIN, Osman ÜÇÜNCÜ

Pages : 229-233

View : 15 | Download : 5

Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :Grosheimin insert ignore into journalissuearticles values(1); and cynaropicrin insert ignore into journalissuearticles values(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, 8a -acetyl grosheimin insert ignore into journalissuearticles values(2); was also prepared. Their structures were deduced by FT-IR, UV, 1D and 2D NMR, LC MS/MS, GC-mass spectra insert ignore into journalissuearticles values(EI);, optical rotation, and chemical methods.
Keywords : Centaurea helenioides Boiss, Compositae, Sesquiterpene lactones, Grosheimin, Cynaropicrin