Eight undescribed steroidal saponins including an unprecedented 16, 26-epoxy-furostanol saponin from Solanum xanthocarpum and their cytotoxic activities
2022
Xu, Zhen-Peng | Liu, Yan | Wang, Si-Yi | Li, Zi-Wei | Li, Xiao-Mao | Lu, Dong-Xu | Pan, Juan | Kuang, Hai-Xue | Yang, Bing-You
Eight undescribed steroidal saponins named solasaponins A-H were isolated from the fruits of Solanum xanthocarpum, including an unusual 16,26-epoxy-furostanol saponin, two furostanol saponins, three isospirostanol saponins, two pseudo-spirostanol saponins. The structures of all compounds were elucidated by extensive spectroscopic data analyses (1D, 2D NMR, and HRESIMS) combined with physico-chemical analysis methods (acid hydrolysis, optical rotation, and IR). The cytotoxicities of all compounds in vitro against two human cancer cell lines (A-549 and HepG2) were evaluated by CCK-8 assay.
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