Eudesmane-type sesquiterpenes from Senecio ambraceus

Abstract

Investigation of the aerial parts of Senecio ambraceus afforded four eudesmane-type sesquiterpenes (1-4), of which 1 was isolated from a natural source for the first time. Its structure was established on the basis of spectroscopic methods, including IR, EI-MS, HR-ESI-MS, 1D and 2D NMR spectroscopy.