Biosynthesis of Mangiferin in Anemarrhena asphodeloides BUNGE. I. The Origin of the Xanthone Nucleus
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概要
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Phenylalanine-1-^<14>C, -2-^<14>C and -3-^<14>C, and malonic acid-2-^<14>C were efficiently incorporated into mangiferin (1) in Anemarrhena asphodeloides. In the case of feeding with phenylalanine-1-^<14>C, -2-^<14>C and malonic acid-2-^<14>C, the radioactivity of 1 was localized in the phloroglucinol ring. Furthermore, cinnamic acid-3-^<14>C and p-coumaric acid-2-^<14>C were also incorporated into 1 and isomangiferin (2), but benzoic acid-, p-hydroxybenzoic acid-and protocatechuic acid-(carboxyl-^<14>C) were essentially not incorporated into 1 or 2. In addition to the above data, doubly labelled p-coumaric acid was incorporated into 1 without change of the T/^<14>C ratio. These results show that the aglycone of 1 and 2 was biosynthesized from p-coumarate (C_6-C_3) and two malonates (C_4).
- 1980-08-25
著者
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井上 隆夫
科学警察研究所
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井上 隆夫
Hoshi College of Pharmacy
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藤田 正雄
Faculty Of Pharmaceutical Sciences:hoshi University
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藤田 正雄
Hoshi College of Pharmacy
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藤田 正雄
星薬科大学薬学部:(現)株式会社ウチダ和漢薬研究開発室
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