Six eremophilane-type (parasenolide A-F) and an eudesmane-type (parasenin) sesquiterpenoids, along with eight known sesquiterpenes, were isolated from the whole plants of Parasenecio roborowskii. The structures and absolute configurations of new compounds were elucidated using extensive
Twenty-two new highly oxygenated bisabolane-type sesquiterpenoids, pararubin A-V (1-22), were isolated from the whole plant of Parasenecio rubescens. The structure determination of 1-22, including the assignment of their relative configurations, was accomplished by extensive 1D and 2D NMR