YAKUGAKU ZASSHI
Online ISSN : 1347-5231
Print ISSN : 0031-6903
ISSN-L : 0031-6903
松柏類および近縁植物成分の研究 第40報
Hinokiflavoneの構造研究 (4) Penta-O-methylhinokiflavoneのエタノール性水酸化カリウムによる分解Substance YおよびZの構造
福井 義雄
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1960 年 80 巻 6 号 p. 752-756

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Decomposition of hinokiflavone pentamethyl ether with ethanolic potassium hydroxide produces anisic acid, p-methoxyacetophenone, 2-hydroxy-4, 6-dimethoxyacetophenone, a phenolic acid (Substance Y) of formula C17H16O7, and a phenolic diketone (Substance Z) of formula C18H18O6. Substances Y and Z were determined to have the respective structure of 2-hydroxy-3-acetyl-4, 6-dimethoxy-4′-carboxydiphenyl ether and 2-hydroxy-3, 4′-diacetyl-4, 6-dimethoxydiphenyl ether. All these substances, except 2-hydroxy-4, 6-dimethoxyacetophenone, originate from the ketoflavone structure, so that hinokiflavone should have one phloroglucinol system besides a ketoflavone. From these facts, it was concluded that hinokiflavone has a diphenyl ether-type bisflavonoid structure in which two moles of aplgenin are bonded in ether linkage at their 4′- and 8-position.

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