The first isolation of furanoeremophilane from Ligularia nelumbifolia

Ligularol (1), a furanoeremophilane, was isolated together with eremophil-l(10)-en-11-ol (2) from one of eight collected samples of Ligularia nelumbifolia and L. kongkalingensis, a closely related species. It is proposed that the ability to produce the furanoeremophilane has been acquired through hybridization.