Hepatoprotective pyranocoumarins from the stems of Clausena emarginata

Seven pyranocoumarins, clauemarmarins A−G, along with 6 known analogues were isolated from the stems of Clausena emarginata. Clauemarmarin C and D and two of the known analogues exhibited hepatoprotective activities against DL-galactosamine-induced damage in WB-F344 cells at the concentration of 10 μM.