生薬の規格設定に関する研究(第19報) : ニガキの成分(第1報) : Nigakinoneの構造
1967 年 87 巻 11 号 p. 1371-1373
詳細
1967 年 87 巻 11 号 p. 1371-1373
From the heartwood of Picrasma ailanthoides PLANCHON (Simarubaceae), a new alkaloid, nigakinone, was isolated as yellow needles or plates, m.p. 224∼225°along with 4, 5-dime-thoxycanthin-6-one. The structure of nigakinone was established as 4-methoxy-5-hydroxy-canthin-6-one because its monomethyl ether was identical with 4, 5-dimethoxycanthin-6-one and it was converted to methyl α-carboline-1-carboxylate by oxidation.
