Sesquiterpene lactones from the pericarps of Illicium majus; 2-oxy derivatives of neomajucin and 3,4-dehydroxyneomajucin - Kouno, I; Baba, N; Hashimoto, M; Kawano, N; Takahashi, M; Kaneto, H; Yang, C S (Chem Pharm Bull, 1990)