海人草成分の研究 (第7報)
カイニン酸関連化合物に就いて その2
1956 年 76 巻 2 号 p. 189-191
詳細
1956 年 76 巻 2 号 p. 189-191
The aqueous extract of Digenea simplex Ag. yielded, besides the amino acid already reported, two substances which give yellow ninhydrin reaction. One of them was isolated as colorless, long needles, m.p. 275° (decomp.), C10H15O4N⋅H2O, which was confirmed, by paper chromatography, infrared spectral analysis, and mixed fusion, to be α-kainic lactone, obtained by the acid treatment of kainic acid. By saponification, the lactone was derived to hydroxykainic acid, C10H17O5N, as colorless needles, m.p. 260° (decomp.).
