Iresinoside , a yellow pigment from pfaffia iresinoides - Shiobara, Y; Inoue, S S; Nishiguchi, Y; Kato, K; Takemoto, T; Nishimoto, N; Oliveira, F.; Akisue, Gokithi; Akisue, Maria Kubota; Hashimoto, G (Phytochemistry, 1992)