Study on Chemical Constituents and Cytotoxic Activities of Salacia chinensis Growing in Vietnam

Two new triterpenoids, named 7α,21α-dihydroxyfriedelane-3-one (1) and 7α,29-dihydroxyfriedelane- 3-one (2) have been isolated from the ethyl acetate extract of the stems of Salacia chinensis besides the known triterpenoid 21α,30-dihydroxyfriedelane-3-one (3). The structures of the isolated compounds were elucidated on the basis of spectral analysis. Eight triterpenoids from this plant have been tested against the four cancer cell lines Hep-G2,...