松柏類および近縁植物成分の研究 第39報

Hinokiflavoneの構造研究 (3) Substance XおよびKetoflavoneの構造

抄録

The phenolic ketone (Substance X), C₁₄H₁₂O₅, obtained by decomposition of hinoki-flavone with 25% potassium hydroxide, was established as 2, 4, 6-trihydroxy-4′-acetyl-diphenyl ether. The same decomposition of ketoflavone was found to produce Substance X and p-hydroxyacetophenone, and from this fact and from its composition, ketoflavone was revealed to be 8- or 6-(p-acetylphenoxy)-5, 7, 4′-trihydroxyflavone.