Fourteen new dammarane-type triterpenoids (1-14) and 11 known analogues were isolated from the stem bark of Dysoxylum binecteriferum. The absolute configurations were established by comparison with the literature or by Mo2(OAc)4-induced electronic circular dichroism data. All isolates were evaluated for their cytotoxicities against three human cancer cell lines as well as their inhibitory effects on lipopolysaccharide-induced nitric oxide production in RAW264.7 cells. Compounds 4 and 8 displayed moderate cytotoxicities against HepG2 with IC50 values of 6.5 and 8.0 μM, respectively.
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Yan et al. (2014) studied this question.
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