ヒメドコロ Dioscorea tenuipes FRANCH. et SAVAT. 地上部の成分研究 (第3報)3-Methoxalyldiotigenin 4-Acetate ならびにそのマグネシウム錯体
1975 年 95 巻 4 号 p. 424-429
詳細
1975 年 95 巻 4 号 p. 424-429
The structures of two steroidal substances, G4 and S4, isolated3) from the fresh aerial parts of Dioscorea tenuipes FRANCH. et SAVAT. (Dioscoreaceae) were investigated. G4 mp 217-218° (decomp.), [α]D-55.0°, was characterized as 3-methoxalyldiotigenin 4-acetate (V), and S4, mp 205-206° (decomp.), [α]D+19.0°, was presumed to be a complex (VI) consisting of one mole each of V, Mg(OH)2, and H2O. They are first spirostanol methoxalate and its magnesium complex ever found in nature.
