Abstract A phytochemical investigation of the heartwood of Toxicodendron vernicifluum (Stokes) F.A. Barkley led to the isolation of twenty-five compounds, including sixteen flavonoids (1–15), one flavonolignan (16), one chromone (17), four benzoic acid derivatives (18–21), two triterpenes (22–23) and two sterols (24–25). The structures of these compounds were elucidated on the basis of spectroscopic analysis and comparison with previous literature data. Among them, 8 and 21were isolated from the genus Toxicodendron and 5, 9, 13, 17–20, 22 from the family Anacardiaceae for the first time. Furthermore, 21 had been identified only by LC/MS before. 20 was a synthetic product used as anthelmintics, newly identified as a natural product. Furthermore, the chemotaxonomic value of these isolates was also discussed in detail.

中文翻译：

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来自 Toxicodendron vernicifluum (Stokes) FA Barkley 心材的化学成分

摘要对 Toxicodendron vernicifluum (Stokes) FA Barkley 心材的植物化学研究导致分离出 25 种化合物，包括 16 种黄酮类化合物 (1-15)、一种黄酮木脂素 (16)、一种色酮 (17)、四种苯甲酸衍生物(18-21)、两种三萜 (22-23) 和两种甾醇 (24-25)。这些化合物的结构是在光谱分析和与先前文献数据比较的基础上阐明的。其中，8、21为首次从毒藤属中分离得到，5、9、13、17-20、22为首次从漆树科中分离得到。此外，之前仅通过 LC/MS 鉴定了 21 个。20 是一种用作驱虫药的合成产品，新近被确定为天然产品。此外，还详细讨论了这些分离株的化学分类学价值。