Abstract
Three isoquinoline alkaloids and an isoindole alkaloid, along with eight known compounds, were isolated from the roots of Menispermum dauricum (Menispermacese). The alkaloids were characterized as 7-hydroxy-6-methoxy-1(2H)-isoquinolinone, 6,7-dimethoxy-N-methyl-3,4-dioxo-1(2H)-isoquinolinone, 1-(4-hydroxybenzoyl)-7-hydroxy-6-methoxy-isoquinoline and 6-hydroxy-5-methoxy-N-methylphthalimide, on the basis of spectral evidence including 1D- and 2D-NMR and MS analyses.
MeSH terms
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Alkaloids / chemistry*
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Alkaloids / isolation & purification
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Drugs, Chinese Herbal / chemistry
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Indole Alkaloids / chemistry*
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Indole Alkaloids / isolation & purification
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Isoquinolines / chemistry*
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Isoquinolines / isolation & purification
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Menispermum / chemistry*
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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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Spectrometry, Mass, Electrospray Ionization
Substances
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Alkaloids
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Drugs, Chinese Herbal
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Indole Alkaloids
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Isoquinolines