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One new ecdysteroid, (24 R ) 24 (2 hydroxyethyl) 20 hydroxyecdysone (3), as well as three known ecdysteroids, has been isolated from Chinese herb Serratula strangulata and these compounds 1-4 showed effective antioxidant activity on AAPH induced hemolysis of human RBC and Fe 2+ + cysteine induced lipid peroxidation of liver microsome.
One new ecdysteroid, (24 R) 24 (2 hydroxyethyl) 20 hydroxyecdysone (3), as well as three known ecdysteroids, has been isolated from Chinese herb Serratula strangulata and these compounds 1-4 showed effective antioxidant activity on AAPH induced hemolysis of human RBC and Fe 2+ + cysteine induced lipid peroxidation of liver microsome.