Fig. 6

Cytotoxicity of compounds 1–7 isolated from Crepis lacera are as follows: crepiside D (1), 8-epidesacylcynaropicrin-3-O-β-glucopyranoside (2), 8-epigrosheimin (3), 8-β-hydroxydehydrozaluzanin C (4), 11-dehydrocrepiside D (5), p-hydroxy-benzyl 7-O- β-glucopyranoside (6), and pynoresynol (7). MDBK cells were incubated with each compound for 48 h. Cell viability was assessed by MTT assay. The results represent mean values of three independent experiments ± standard deviations (SD). *P < 0.05 vs control (cells incubated with vehicle only); **P < 0.01 vs control