In vitro antiplasmodial and cytotoxic activities of sesquiterpene lactones from Vernonia fimbrillifera Less. (Asteraceae)

Abstract : Due to the in vitro antiplasmodial activity of leaf extracts from Vernonia fimbrillifera Less. (Asteraceae), a bioactivity-guided fractionation was carried out. Three sesquiterpene lactones were isolated, namely 8-(4’-hydroxymethacrylate) dehydromelitensin (1), onopordopicrin (2) and 8α-[4’-hydroxymethacryloyloxy]-4-epi-sonchucarpolide (3). Their structures were elucidated by spectroscopic methods (1D and 2D NMR and MS analyses) and by comparison with published data. The isolated compounds exhibited antiplasmodial activity with IC50 values ≤ 5 μg/mL. Cytotoxicity of the compounds against a human cancer cell line (HeLa) and a mouse lung epithelial cell line (MLE12) was assessed to determine selectivity. Compound 3 displayed promising selective antiplasmodial activity (SI > 10).
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Article dans une revue
Natural Product Research, Taylor & Francis, In press, 〈10.1080/14786419.2017.1350665〉
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http://hal.univ-reunion.fr/hal-01657053
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Soumis le : mercredi 6 décembre 2017 - 12:11:27
Dernière modification le : vendredi 14 septembre 2018 - 08:17:10

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Annélise Bordignon, Michel Frederich, Allison Ledoux, Pierre Éric Campos, Patricia Clerc, et al.. In vitro antiplasmodial and cytotoxic activities of sesquiterpene lactones from Vernonia fimbrillifera Less. (Asteraceae). Natural Product Research, Taylor & Francis, In press, 〈10.1080/14786419.2017.1350665〉. 〈hal-01657053〉

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