- Turkish Journal of Chemistry
- Vol: 30 Issue: 2
- Sesquiterpene lactones from Centaurea helenioides Boiss
Sesquiterpene lactones from Centaurea helenioides Boiss
Authors : Nurettin Yayli, Cemalettin Baltaci, Yaşar Gök, Ebru Aydin, Osman Üçüncü
Pages : 229-233
View : 12 | Download : 7
Publication Date : 9999-12-31
Article Type : Makaleler
Abstract :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, 8a -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.Keywords : Centaurea helenioides Boiss., Compositae, Sesquiterpene lactones, Grosheimin, Cynaropicrin