Abstract Emilia fosbergii is a member of the tribe Senecioneae (Asteraceae), most species of which contain pyrrolizidine alkaloids. Notwithstanding, the phytochemistry of E. fosbergii is poorly understood, and pyrrolizidine alkaloids produced by this species have yet to be characterized. In this work, the presence of 11 pyrrolizidine alkaloids, three caffeoylquinic acid derivatives, and six flavonoids were detected by liquid chromatography coupled to high-resolution mass spectrometry analyses. Pyrrolizidine alkaloids of otonecine, retronecine, and platynecine bases are annotated in different parts of the plant. Furthermore, emiline was isolated, possibly indicating that E. fosbergii has a close phylogenetic relationship with E. coccinea. The chemophenetic implications of the presence of pyrrolizidine alkaloids in E. fosbergii and tribe Senecioneae are discussed.

中文翻译：

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Emilia fosbergii Nicolson 的吡咯里西啶生物碱和其他成分

摘要 Emilia fosbergii 是千里菊科(Asteraceae) 的成员，其中大多数种类含有吡咯里西啶类生物碱。尽管如此，对 E. fosbergii 的植物化学知之甚少，该物种产生的吡咯里西啶生物碱尚未得到表征。在这项工作中，通过液相色谱结合高分辨率质谱分析检测了 11 种吡咯里西啶生物碱、三种咖啡酰奎宁酸衍生物和六种黄酮类化合物的存在。在植物的不同部位标注了奥托新碱、逆曲新碱和扁桃体碱的吡咯里西啶生物碱。此外，分离出emiline，可能表明E. fosbergii 与E. coccinea 具有密切的系统发育关系。E. 吡咯里西啶生物碱存在的化学表观影响。