A New Cytotoxic Cyclolanostane Triterpenoid Xyloside from Souliea vaginata

Abstract

A new cyclolanostane triterpenoid xyloside, soulieoside P (1), and a known oleanane-type saponin, hederasaponin B (2), were isolated from the rhizomes of Souliea vaginata. Their structures were established by extensive spectroscopic and HRESIMS analysis, as well as chemical methods. Compound 1 showed significant inhibitory effects with IC₅₀ values of 7.6–11.2 μM against three human cancer cell lines, while compound 2 exhibited no hepatoprotective effect on CCl₄-induced injury of human HepG2 cells, in the tested range of 0.1–100 μM.

Keywords

Souliea vaginata Cyclolanostane triterpenoid glycoside Soulieoside P Hederasaponin B Cytotoxicity Hepatoprotective activity

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