Sesquiterpenoids and phenolics of Pulicaria paludosa

Thirteen sesquiterpenoids of the skeletal types caryophyllane, cadinane, oplopane, eudesmane, allo-aromadendrane and 4-epi-guaiane, were isolated from Pulicaria paludosa. Their structures were established mainly by NMR techniques and chemical transformations. Four of them are new natural products. Three flavonoids and some simple phenolic derivatives were also isolated.