Carbohydrate Research 2012-Nov
Antioxidant phenolic glycosides from the roots of Illicium dunnianum.
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Eight new phenolic glycosides, dunnianosides A-H (1-8), and nine known phenolic glycosides (9-17), were isolated from the roots of Illicium dunnianum. The structures of these new compounds were elucidated by spectroscopic methods including 1D and 2D NMR, HRESIMS, and chemical methods. Compounds 1-5, 7, and 9 exhibited potent antioxidant activities against Fe(2+)-cystine-induced rat liver microsomal lipid peroxidation, with IC(50) values ranging from 3.8 ± 0.6 to 23.0 ± 2.2 μM.