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[摘要]
从滇白珠Gaultheria yunnanensis(Franch.)Rehd.根的石油醚部分分得10个化合物,其中8个化合物经理化性质和波谱分析,它们的结构分别鉴定为β-乙酰谷甾醇(Ⅰ),3β-乙酰基-12,25-二烯-达玛烷(Ⅱ),3β-乙酰氧基-20(29)-羽扇烯-28-醛(Ⅲ),3β-乙酰齐墩果酸(Ⅳ),β-谷甾醇(Ⅴ),熊果酸(Ⅵ),豆甾醇(Ⅶ)和3β-羟基-20(29)-羽扇烯-28-醛(Ⅷ).其中Ⅱ为杜鹃花科植物中首次发现的达玛烷三萜类化合物,化合物Ⅰ、Ⅲ、Ⅷ为杜鹃花科植物中首次报道,其它4个化合物为从该植物中首次分得.
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[Abstract]
Ten compounds were isolated from the petroleum ether fraction of the root of Gaultheria yunnanensis (Franch.) Rehd..The structures of eight of them were identified as 3β-acetylsitosterol(Ⅰ),3β acety1-12,25-dien-dammarane(Ⅱ),3β--acetoxy-20(29) -lupen-28-aldehyde(Ⅲ),3β-acetyl-oleanoic acid(Ⅳ),β-sitosterol(Ⅴ),ursolic acid(Ⅵ),stigmasterol(Ⅶ) and 3β-hydroxy-20(29)-lupen-28-aldehyde(Ⅷ) by chemical and spectral methods.Among these compounds,Ⅱ is a dammarane triterpenoid discovered for the first time in Ericaceae;Ⅰ,Ⅲ andⅧ have not been reported previously from Ericaceae;the other four compounds were obtained from the title plant for the first time.
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