Abstract
Five new yuzurimine-type alkaloids, yunnandaphnines A-E (2-6), together with two known analogues, macrodaphniphyllamine (1) and calycinine A (7), have been isolated from the leaves and twigs of Daphniphyllum yunnanense. The structures of the new alkaloids were elucidated by spectroscopic methods. Yunnandaphnine E (6) is a novel heptacyclic yuzurimine-type alkaloid with an oxazine ring.
MeSH terms
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Alkaloids / chemistry*
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Alkaloids / classification
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Alkaloids / isolation & purification*
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Drugs, Chinese Herbal / chemistry*
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Drugs, Chinese Herbal / isolation & purification*
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Heterocyclic Compounds, 4 or More Rings / chemistry*
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Heterocyclic Compounds, 4 or More Rings / isolation & purification*
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Molecular Structure
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Nuclear Magnetic Resonance, Biomolecular
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Oxazines / chemistry*
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Oxazines / isolation & purification*
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Plant Leaves / chemistry
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Plant Stems / chemistry
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Plants, Medicinal / chemistry*
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Saxifragaceae / chemistry*
Substances
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Alkaloids
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Drugs, Chinese Herbal
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Heterocyclic Compounds, 4 or More Rings
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Oxazines
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yunnandaphnine E