Abstract
Two new sesquiterpenes, dunnianoside I (1) and 8'-oxo-6-hydroxy-dihydrophaseic acid methyl ester (2), a new glycoside, dunnianoside J (3), two new neolignans, dunnianeolignans A-B (4, 5), together with 10 known compounds (6-15), were isolated from the roots of Illicium dunnianum. The structures of these new compounds were elucidated by spectroscopic methods including 1D and 2D NMR, HR-ESI-MS, and chemical methods. Compounds 7, 8, and 13-15 exhibited potent antioxidant activities against Fe²⁺-cystine-induced rat liver microsomal lipid peroxidation, with IC₅₀ values ranging from 4.2 ± 0.4 to 38.4 ± 2.6 μM.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Animals
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Antioxidants / chemistry
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Antioxidants / isolation & purification*
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Antioxidants / pharmacology
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Drugs, Chinese Herbal / chemistry
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Drugs, Chinese Herbal / isolation & purification*
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Drugs, Chinese Herbal / pharmacology
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Glycosides / chemistry
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Glycosides / isolation & purification*
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Illicium / chemistry*
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Lignans / chemistry
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Lignans / isolation & purification*
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Lignans / pharmacology
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Lipid Peroxidation / drug effects
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Malondialdehyde / analysis
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Microsomes, Liver / chemistry
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Microsomes, Liver / drug effects
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Molecular Structure
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Nuclear Magnetic Resonance, Biomolecular
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Plant Roots / chemistry
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Rats
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Sesquiterpenes / chemistry
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Sesquiterpenes / isolation & purification*
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Sesquiterpenes / pharmacology
Substances
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8'-oxo-6-hydroxy-dihydrophaseic acid methyl ester
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Antioxidants
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Drugs, Chinese Herbal
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Glycosides
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Lignans
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Sesquiterpenes
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dunnianeolignan A
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dunnianeolignan B
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dunnianoside I
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dunnianoside J
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Malondialdehyde