Abstract
Eight new ent-labdane diterpenoids, mallonicusins A-H (1-8), were isolated from the stems of Mallotus japonicus. Their structures, including the absolute configurations, were determined by extensive analyses of spectroscopic data and the ECD spectra of the Pr(FOD)₃ complex of substrates in CCl₄. The absolute configuration of compound 1 was confirmed by single-crystal X-ray crystallography using Cu Kα radiation.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Crystallography, X-Ray
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Diterpenes / chemistry
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Diterpenes / isolation & purification*
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Drugs, Chinese Herbal / chemistry
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Drugs, Chinese Herbal / isolation & purification*
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Mallotus Plant / chemistry*
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Molecular Conformation
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Molecular Structure
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Nuclear Magnetic Resonance, Biomolecular
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Plant Leaves / chemistry
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Plant Stems / chemistry
Substances
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Diterpenes
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Drugs, Chinese Herbal