Abstract
Bioassay-guided fractionation of the roots of Litsea hypophaea led to the isolation of seven new butanolides, namely, litseakolides H-N (1-7), all with the 3R,4S configuration, as well as three new biarylpropanoids, hypophaone (8), hypophaol (9), and hypophane (10), and 15 known compounds. The structures of 1-10 were determined by means of spectroscopic analysis. Litseakolide L (5) and N-trans-feruloylmethoxytyramine (11) showed antitubercular activity against Mycobacterium tuberculosis strain H(37)Rv, with MIC values of 25 and 1.6 microg/mL, respectively.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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4-Butyrolactone / analogs & derivatives*
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4-Butyrolactone / chemistry
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4-Butyrolactone / isolation & purification*
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4-Butyrolactone / pharmacology*
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Antitubercular Agents / chemistry
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Antitubercular Agents / isolation & purification*
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Antitubercular Agents / pharmacology*
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Litsea / chemistry*
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Microbial Sensitivity Tests
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Molecular Structure
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Mycobacterium tuberculosis / drug effects*
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Nuclear Magnetic Resonance, Biomolecular
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Plant Roots / chemistry
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Stereoisomerism
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Taiwan
Substances
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Antitubercular Agents
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4-Butyrolactone