Furanoeremophilan-14β,6α-olide, a new furanosesquiterpene lactone of an eremophilane-type from Ligularia hodgsonii Hook, f - Ishizaki,Y.; Tanahashi,Y.; Tsuyuki,T.; Takahashi,T.; Tori,K. (Bull Chem Soc Jpn, 1979)