Medicinal Foodstuffs. II. On the Bioactive Constituents of the Tuber of Sagittaria trifolia L. (Kuwai, Alismataceae): Absolute Stereostructures of Trifoliones A, B, C, and D, Sagittariosides a and b, and Arabinothalictoside.
作者:Masayuki YOSHIKAWA、Satoshi YOSHIZUMI、Toshiyuki MURAKAMI、Hisashi MATSUDA、Johji YAMAHARA、Nobutoshi MURAKAMI
DOI:10.1248/cpb.44.492
日期:——
From the medicinal foodstuff "kuwai", the tuber of Sagittaria trifolia L., four bioactive diterpene ketones, trifoliones A, B, C, and D, two diterpene glucosides, sagittariosides a and b, and a nitroethylphenol glycoside, arabinothalictoside, were isolated, together with six known diterpenes. Their absolute stereostructures were determined on the basis of chemical and physicochemical evidence with included the application of a modified Mosher's method and an exciton chirality method. Among the diterpene consituents, trifoliones A, B, C, and D exhibited inhibitory effects on the histamine release from rat mast cells induced by compound 48/80 and calcium ionophore A-23187.
从药用植物三叶相思豆的块茎 "苦艾 "中,分离出了四种具有生物活性的二萜酮类化合物(三叶相思豆酮 A、B、C 和 D)、两种二萜葡萄糖苷类化合物(相思豆苷 a 和 b)以及一种硝基乙基苯酚苷类化合物(阿拉伯相思豆苷),另外还有六种已知的二萜类化合物。根据化学和物理化学证据确定了它们的绝对立体结构,包括应用改进的莫舍尔方法和激发子手性方法。在这些二萜成分中,三萜 A、B、C 和 D 对化合物 48/80 和钙离子诱导剂 A-23187 诱导的大鼠肥大细胞组胺释放具有抑制作用。