Abstract Sixteen compounds were isolated from the root barks of Ailanthus altissima (Mill.) Swingle, including thirteen lignans (1–13), two coumarins (14–15), and one chalcone (16). This is the first report on the occurrence of compounds 1–16 in the genus Ailanthus. Their structures were elucidated on the basis of NMR spectroscopic data. The plant distribution network of all isolated compounds was described to illustrate the significance of taxonomy. The presence of these congenetic lignans (1–13) and their biosynthetic relationships may be used for identification of Ailanthus genus.

中文翻译：

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臭椿 (Mill.) Swingle 的化学成分和化学分类学意义

摘要 从臭椿 (Mill.) Swingle 的根皮中分离出 16 种化合物，包括 13 种木脂素 (1-13)、两种香豆素 (14-15) 和一种查耳酮 (16)。这是臭椿属中化合物1-16的首次报道。它们的结构是在核磁共振光谱数据的基础上阐明的。描述了所有分离化合物的植物分布网络，以说明分类学的重要性。这些同生木脂素 (1-13) 的存在及其生物合成关系可用于鉴定臭椿属。