日本産アザミ属植物の葉から分離されたフラボノイド成分の同定とその特殊性

概要

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In our series of flavonoid survey in Japanese Cirsium species, the flavonoid components appearing in the leaves of C. lucens Kitam. var. opacum Kitam., C. nipponicum (Maxim.) Makino var. incomptum (Franch. et Savat.) Kitam., C. kamtschaticum Ledeb. subsp. pectinellum (A. Gray) Kitam., C. japonicum DC., C. microspicatum Nakai var. kiotoense Kitam., C. yezoense (Maxim.) Makino and C. inundatum Makino were isolated and identified (cf. Table 4). Among six kinds of flavonoid glycosides which were obtained in crystalline state or as purified solutions in this experiment, pectolinarin (5, 7-dihydroxy-6, 4'-dimethoxyflavone 7-O-rutinoside) was found in six taxa as a major component together with a minor amount of linarin (5, 7-dihydroxy-4'-methoxyflavone 7-O-rutino-side), while C. microspicatum contained pectolinarin alone as an exception. Cirsimarin (5, 4'-dihydroxy-6, 7-dimethoxyflavone 4'-O-glucoside) was present in C. kamtschaticum, while two kinds of luteolin glycosides [7-O-glucoside and 4'-O-rhamnoglucoside (?)]were present in C. inudatum. And, kaempferol 3-O-glucoside was found in four taxa, C. lucens var. opacum, C. yezoense, C. microspicatum var. kiotoense and C. nipponicum var. incomptum, whereas no flavonol has been detected in Japanese Cirsium species, excepting C. arvense (Morita et al. 1964) which is now transferred to the genus Breea.
1988-12-26