Abstract Two new amides (1 and 2) and four known analogues (3–6) were isolated from the roots of Anisodus tanguticus (Maxim.) Pascher. Their structures were determined by extensive spectroscopic analyses. The absolute configuration of compound 1 was determined by comparison of the calculated optical rotation (OR) value with the experimental OR value. All known amides were isolated from the genus Anisodus for the first time, of which compounds 3, 5, and 6 were first reported from the family Solanaceae. Furthermore, the chemotaxonomic significance of these secondary metabolites is discussed.

中文翻译：

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来自 Anisodus tanguticus 根的新酰胺

摘要 从 Anisodus tanguticus (Maxim.) Pascher 的根中分离出两种新的酰胺（1 和 2）和四种已知的类似物（3-6）。它们的结构是通过广泛的光谱分析确定的。通过比较计算的旋光度 (OR) 值与实验 OR 值来确定化合物 1 的绝对构型。所有已知的酰胺类化合物均为首次从 Anisodus 属中分离得到，其中化合物 3、5 和 6 首次报道自茄科。此外，还讨论了这些次生代谢物的化学分类学意义。