Triterpenoids from Coluria longifolia

A new triterpenoid named 19-hydroxy swinhoeic acid, together with four known compounds were isolated from the whole plants of Coluria longifolia Maxim. Their structures were elucidated on the basis of spectroscopic data analysis and comparison with previously reported data. Cytotoxicities of the five compounds against HepG2 cell lines were also evaluated, unfortunately, no obvious activities were observed.