Abstract
From the CHCl3-soluble portion of the 70% EtOH extract of the stems and leaves of Dioscorea nipponica Makino, two new dihydrophenanthrenes were isolated, 2,7-dihydroxy-3,4,6-trimethoxy-9,10-dihydrophenanthrene, and 4,4',7,7'-tetrahydroxy-2,2',6,6'-tetramethoxy-1,1'-bi-9,10-dihydrophenanthrenyl. The structures were determined by means of HRMS, 1H-NMR, 13C-NMR, and HMBC experiments.
MeSH terms
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Dioscorea / chemistry*
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Drugs, Chinese Herbal / chemistry
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Drugs, Chinese Herbal / isolation & purification*
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Ethanol
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Magnetic Resonance Spectroscopy
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Mass Spectrometry
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Molecular Structure
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Phenanthrenes / chemistry
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Phenanthrenes / isolation & purification*
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Plant Leaves / chemistry*
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Plant Stems / chemistry*
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Plants, Medicinal / chemistry*
Substances
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Drugs, Chinese Herbal
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Phenanthrenes
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Ethanol