Chemical Studies on Crude Drug Processing. VII. On the Constituents of Rehmanniae Radix. (1): Absolute Stereostructures of Rehmaglutins A, B, and D Isolated from Chinese Rehmanniae Radix,the Dried Root of Rehmannia glutinosa Libosch.
作者:Isao KITAGAWA、Youichi FUKUDA、Toshio TANIYAMA、Masayuki YOSHIKAWA
DOI:10.1248/cpb.39.1171
日期:——
An iridoid alcohol, rehmaglutin A, and two chlorinated iridoids, rehmaglutins B and D, were isolated from the less polar fraction of Chinese Rehmanniae Radix [the dried root of Rehmannia glutinosa LIBOSCH. (Kan-jio in Japanese)], together with rehmaglutin C, rehmaionoside C, jio-cerebroside, and acteoside. The absolute configurations of rehmaglutins A, B, and D were established on the basis of chemical and spectral evidence which included the chemical derivations of rehmaglutins from the known iridoid glycoside catalpol and the application of the bezoate chirality method.
从地黄(地黄的干燥根)的极性较低的部分中分离出了一种鸢尾醇--地黄甙 A 和两种氯化鸢尾甙--地黄甙 B 和 D,以及地黄甙 C、地黄甙 C、地黄脑苷脂和地黄甙。雷公藤苷 A、B 和 D 的绝对构型是根据化学和光谱证据确定的,其中包括从已知的鸢尾苷梓醇中化学衍生出的雷公藤苷,以及苯甲酸酯手性方法的应用。