Jacaranone Derivatives with Antiproliferative Activity from <i>Crepis pulchra</i> and Relevance of This Group of Plant Metabolites
2022
Csilla Zsuzsanna Dávid | Norbert Kúsz | Gyula Pinke | Ágnes Kulmány | István Zupkó | Judit Hohmann | Andrea Vasas
Jacaranones are a small group of specific plant metabolites with promising biological activities. The occurrence of jacaranones is limited to only a few plant families, with Asteraceae being the most abundant source of these compounds. Therefore, jacaranones can also serve as chemotaxonomic markers. Our phytochemical investigation of <i>Crepis pulchra</i> L. (Asteraceae) resulted in three jacaranone derivatives (jacaranone, 2,3-dihydro-2-hydroxyjacaranone, 2,3-dihydro-2-methoxyjacaranone), and (6<i>R</i>,9<i>S</i>)-3-oxo-α-ionol-<i>β</i>-<span style="font-variant: small-caps;">d</span>-glucopyranoside, fulgidic acid, 12,15-octadecadienoic acid methyl ester, scopoletin and apigenin-7-<i>O</i>-<i>β</i>-<span style="font-variant: small-caps;">d</span>-glucoside. This is the first report on the isolation of jacaranones from a species belonging to the Cichorioideae subfamily of Asteraceae. Jacaranone derivatives were subjected to an in vitro antiproliferative assay against a panel of human cancer cell lines (MCF-7, MDA-MB-231, HeLa, and C33A), revealing high or moderate activities, with IC<sub>50</sub> values ranging from 6.3 to 26.5 μM.
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