Abstract
Three new lanostane triterpenoids, designated as 6-hydroxyl schiglausin A (1), 29-hydroxyl schiglausin D (2), and 6-hydroxyl schiglausin G (3), were isolated from the ethanol extract of the stems of Schisandra viridis. Structural elucidation of all the compounds were performed by spectral methods such as 1D and 2D (1H- 1H COSY, HMQC, and HMBC) NMR spectroscopy, in addition to high resolution mass spectrometry. The isolated compounds were tested in vitro for cytotoxic activities. As a result, compound 1 exhibited cytotoxic activities for all six tested human lung cancer cell lines with IC50 values less than 10 μM.
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