Hepatoprotective flavonol glycosides from the aerial parts of Rodgersia podophylla.

A new acylated flavonoid, quercetin 3- O-alpha- L-(5"- O-acetyl)-arabinofuranoside ( 1), along with six known flavonoids ( 2 - 7) were isolated from the aerial parts of Rodgersia podophylla. The new flavonoid 1 exhibited 50.1 % hepatoprotective activity at a concentration of 100 microM, and the three known compounds 3, 5 and 6 showed hepatoprotective activities at a concentration of 50 microM (45.7, 50.8 and 57.3 %, respectively) by using the primary cultures of rat hepatocytes injured by H (2)O (2).