Norbergenin 是一种 bergenin 的邻去甲基衍生物，可从白芍的根茎中分离得到，具有中等的抗氧化活性。

Norbergenin is a chemical compound. It is the O-demethylated derivative of bergenin. It can be isolated from rhizomes of Bergenia stracheyi.

Study showed that the oral administration of Bergenin (1) and Bergenin (1) at doses of 5, 10, 20, 40 and 80 mg/kg per oral dose inhibit the production of proinflammatory Th1 cytokines (IL-2,?IFN-gamma and TNF-alpha) while as potentiate anti-inflammatory Th2 cytokines (IL-4 and IL-5) in the peripheral blood of adjuvant-induced arthritic balb/c mice.?This shows the potential Th1/Th2 cytokine balancing activity of 1 and 2 which is strongly correlated with their anti-arthritic activity.?At similar dose levels, the effect of 2 was found to be more than that of 1.?The oral LD(0) for 1 and 2 was more than 2000 mg/kg body weight of the mice.

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C13H14O9

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