Abstract
Five novel alkaloids, brachystemidines A-E (1-5), were isolated from the roots of Brachystemma calycinum. Their structures were established by spectral data, especially by 1D and 2D NMR techniques. The crystal structure of brachystemidine D was determined via X-ray diffraction analysis.
MeSH terms
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Alkaloids / chemistry
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Alkaloids / isolation & purification*
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Caryophyllaceae / chemistry*
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Crystallography, X-Ray
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Drugs, Chinese Herbal / 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 Roots / chemistry
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Plants, Medicinal / chemistry*
Substances
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Alkaloids
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Drugs, Chinese Herbal