New metabolites from onopordum illyricum
A phytochemical investigation of Onopordum illyricum afforded, in addition to several known compounds, two new eudesmane sesquiterpenes (1 and 2), two new elemane sesquiterpenes (3 and 4), and one new neolignan derivative (5). The structure elucidation of all compounds was based on their (1)H and (13)C NMR spectral data, including those derived from 1D TOCSY, 2D NMR, COSY-DQF, HSQC, and HMBC experiments, as well as extensive 1D ROESY studies.
Braca
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Dipartimento di Chimica Bioorganica e Biofarmacia, Universita degli Studi di Pisa, Via Bonanno 33, Pisa, Italy, and Dipartimento di Scienze Farmaceutiche, Universita degli Studi di Salerno, Via Ponte Don Melillo, Fisciano, Salerno, Italy.
De Tommasi N
Morelli
I
Pizza
C