New Cytotoxic Cycloartane Triterpenes from the Aerial Parts of Actaea heracleifolia (syn. Cimicifuga heracleifolia)

Abstract

One new 15,16-seco-cycloartane triterpene (1), three new cycloartane triterpene glycosides (2–4), and five known compounds (5–9) were isolated from the aerial parts of Actaea heracleifolia. The chemical structures of these compounds were determined on the basis of NMR analysis, HRTOF-ESIMS data, and other spectroscopic methods. Selected compounds were evaluated for their cytotoxicity against human tumor cell lines (HL-60, SMMC-7721, A549, MCF-7, and SW480) in vitro. Compounds 3 and 4 showed weak activity against the HL-60, A-549, and MCF-7 cell lines with IC₅₀ values ranging from 21.34 to 36.98 µM.

Key words

Actaea heracleifolia - Ranunculaceae - 15,16-seco-cycloartane triterpene - cycloartane triterpene glycosides - cytotoxicity - NMR

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