5,7-ジヒドロキシ-4', 8-ジメトキシフラボンの合成 : CirsitakaogeninとCirsitakaosideの構造の訂正

中山 充; 堀江 徳愛; 林 忠男; 有沢 宗久; 清水 岑夫; 森田 直賢

doi:10.1248/yakushi1947.103.6_675

The Synthesis of 5, 7-Dihydroxy-4', 8-dimethoxyflavone : Revised Structures for Cirsitakaogenin and Cirsitakaoside

MITSURU NAKAYAMA, TOKUNARU HORIE, CHUNNAN LIN, MUNEHISA ARISAWA, MINEO SHIMIZU, NAOKATA MORITA

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Keywords: synthesis, 5, 7-dihydroxy-4', 8-dimethoxyflavone, cirsitakaogenin, cirsitakaoside, Cirsium japonicum D.C. var. takaoense, revised structure

JOURNAL FREE ACCESS

1983 Volume 103 Issue 6 Pages 675-678

DOI https://doi.org/10.1248/yakushi1947.103.6_675

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Abstract

5, 7-Dihydroxy-4', 8-dimethoxyflavone (1) was synthesized for the structural confirmation of cirsitakaogenin. However, it was not identical with the natural pigment but it was found that cirsitakaogenin and cirsitakaoside should be read as cirsimaritin (3) and cirsimarin (4), respectively.

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