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The first example of natural cyclic carbonate in terpenoids

2006; Elsevier BV; Volume: 47; Issue: 39 Linguagem: Inglês

10.1016/j.tetlet.2006.07.099

1873-3581

Sergio Rosselli, Antonella Maggio, Gabriella Bellone, Maurizio Bruno,

Phytochemistry and Biological Activities

The first natural occurring cyclic carbonate terpenoid, the guaianolide hololeucin (1), was isolated from the aerial part of Centaurea hololeuca. Its structure was elucidated on the basis of extensive proton, 13C and two-dimensional NMR experiments, as well as by transformation in its diacetyl derivative.