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倒卵叶树萝卜(Agapetes obouata)系杜鹃花科树萝卜属植物,有抗菌消炎作用。其化学成分研究,国内未见有文献报道。笔者用云南省通海所产倒卵叶树萝卜的根粉碎后,用工业酒精提取, 回收乙醇,得红棕色膏状物。膏状物再用石油醚抽提,提取物行硅胶柱层析,用石油醚-乙酸乙酯洗脱,得两个白色结晶、一个油状物,经理化常数和红外光谱、核磁共振谱、质谱测定,确证两个白色结晶分别为木栓酮和β-谷甾醇,油状物为正十三烷。
The apical radish (Agapetes obouata) is a genus of radish from the azalea family and has antibacterial and anti-inflammatory effects. Its chemical composition has not been reported in the country. The author crushes the roots of the ovum of the ovum that grows from the sea of Yunnan Province and extracts it with industrial alcohol to recover the ethanol and obtain a red-brown paste. The paste was extracted with petroleum ether, and the extract was subjected to silica gel column chromatography and eluted with petroleum ether-ethyl acetate to obtain two white crystals and an oily substance. The managerial constants and infrared spectrum, nuclear magnetic resonance spectrum, and mass spectrometry were obtained. It was confirmed that the two white crystals were xanthone and β-sitosterol, respectively, and the oil was n-tridecane.