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从云南省玉溪地区产蓑衣莲的根部得到一种降五环三萜，经光谱分析及其衍生物的Ｘ射线衍射分析确定为新化合物蓑衣莲酮。
A pentacyclic pentacyclic triterpene was obtained from the roots of yucca produced in Yuxi, Yunnan Province. X-ray diffraction analysis was used to identify the new compound yolkone by spectroscopic analysis.