Steroidal alkaloids (SA) are nitrogen-containing specialized metabolites applied as chemophenetic markers in Solanum L. (Solanaceae). Over time, Solanum has been the focus of several molecular phylogenetic studies in an attempt to resolve its infrageneric classification and the relationship among species belonging to this genus. Here we aimed to study SA chemodiversity to identify chemical patterns and to perform a chemophenetic characterization of the Solanum genus and its major clades. Chemical literature data about Solanum steroidal alkaloids was assessed and structural variability of this biogenetic group was used in the chemometric analysis, by applying a Principal Component Analysis and Hierarchical Cluster Analysis. The results demonstrate that the SA chemodiversity in Solanum is represented by the occurrence of nine SA subtypes. The biosynthetic predominance of the spirosolane-type in Solanum clades was observed, except for the preference of the Potato clade in producing the solanidane-type. The Geminata clade displayed low SA glycosylation patterns, containing 3-oxy groups. In addition, low SA production in the Cyphomandra clade was observed. Chemical similarities between the Archaesolanum, Dulcamaroid and Morelloid clades were observed by chemometric analyses. In sum, chemophenetics was proven a reliable and additional tool to describe the array of specialized metabolites in Solanum clades, showing chemical information suitable to corroborate molecular phylogenetic studies.

甾体生物碱 (SA) 是含氮的特殊代谢物，用作茄科植物的化学表型标记物。随着时间的推移，茄属植物一直是一些分子系统发育研究的焦点，试图解决其属下分类和属于该属的物种之间的关系。在这里，我们旨在研究 SA 化学多样性，以识别化学模式，并对茄属及其主要进化枝进行化学表型表征。茄属植物化学文献资料通过应用主成分分析和层次聚类分析，对甾体生物碱进行了评估，并将该生物遗传组的结构变异性用于化学计量分析。结果表明，茄属植物中的 SA 化学多样性由 9 个 SA 亚型的出现代表。龙葵中螺环烷型的生物合成优势观察到进化枝，除了马铃薯进化枝在生产茄烷类时的偏好。Geminata 进化枝显示出低 SA 糖基化模式，包含 3-氧基。此外，在 Cyphomandra 进化枝中观察到低 SA 产量。通过化学计量分析观察到 Archaesolanum、Dulcamaroid 和 Morelloid 进化枝之间的化学相似性。总之，化学现象学被证明是描述茄属进化枝中一系列专门代谢物的可靠和附加工具，显示了适合证实分子系统发育研究的化学信息。