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从长叶香茶菜Rabdoisa stracheyi(Benth ex Hook.f)Hara的地上部分分离得到三种结晶性成分。其中两种为已知化合物6,7-dehydroroyleanone和β-谷甾醇,另一种为新的二萜醌类化合物。通过理化常数和光谱的分析以及衍生物的制备,测定其结构为16-acetoxy-7α-methoxyroyleanone(Ⅰ)。命名为长叶香茶菜甲素。
Three crystalline components were isolated from the aboveground part of Hara Rabdoisa stracheyi (Benth ex Hook.f) Hara. Two of them are known compounds 6,7-dehydroroyleanone and β-sitosterol, and the other is a new diterpenoid. The structure was determined to be 16-acetoxy-7α-methoxyroyleanone (I) through the analysis of physicochemical constants and spectra and the preparation of derivatives. It is named as agaricin.