Oleanolic acid-type glucuronides

Some oleanolic acid-type saponins were known to exhibit similar hepatoprotective activity [4, 7, 32, 42, 43, 44-46]. We also reported the hepatoprotective activity of Palustroside in which has a glucosyl carboxy group at C-28 [47]. As a part of our continuing study, we examined the preventive effects of five oleanolic acid-type glucuronides (90-95), Fig. (8), isolated from Dumasia tnmcata (Table 3) [48]. 

---