Abstract
The phytochemical investigation of extracts from the roots of Sophora tonkinensis yielded three new isoprenylated flavanones, the tonkinochromanes F (2), G (3), and H (5), along with four known compounds. Structural elucidation of the compounds were established on the basis of spectral data, particularly by the use of 1D NMR and several 2D shift-correlated NMR pulse sequences ((1)H-(1)H COSY, HSQC, HMBC, and ROESY).
2008 John Wiley & Sons, Ltd.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Carbon Isotopes
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Flavanones / chemistry*
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Flavanones / isolation & purification
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Flavonoids / chemistry*
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Flavonoids / isolation & purification
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Magnetic Resonance Spectroscopy / methods*
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Magnetic Resonance Spectroscopy / standards*
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Molecular Conformation
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Plant Roots / chemistry
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Protons
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Reference Standards
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Sophora / chemistry*
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Stereoisomerism
Substances
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Carbon Isotopes
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Flavanones
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Flavonoids
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Protons
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sophoranone