Phytochemical Study on the Rhizome of Atractylodes japonica from Korea

한국산 창출의 성분연구

From the rhizome of Atractylodes japonica Koidzumi (Compositae) which is the original plant of oriental medicine 'Cang-Zhu', four essential oil compounds were isolated. Three of them were identified as atractylon, hydroxyatractylon and $5{\alpha}H,\;10{\beta}-selina-4(14),\;7(11)-diene-8-one$, which were already known as the constitutents of Atractylodes Rhizoma. The fourth is a novel polyacetylene type compound, and the structure is postulated as 1, 4-diacetoxytetradeca-6, 12-diene-8, 10-diyne by the spectral data.