Abstract
Fourteen new diterpenoids including clerodane (1-12), labdane (13), and norlabdane (14) types, as well as nine known analogues were isolated from the aerial parts of Croton laui. Their structures were established on the basis of spectroscopic analysis, and that of crotonolide H (11) was confirmed by single-crystal X-ray crystallography. Crotonolide A (1) exhibited moderate cytotoxicity against two tumor cell lines, HL-60 (human premyelocytic leukemia, IC50 9.42 μM) and P-388 (murine leukemia, IC50 7.45 μM), and crotonolide G (10) displayed significant antibacterial activity against a panel of Gram-positive bacteria.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Animals
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Anti-Infective Agents / chemistry
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Anti-Infective Agents / isolation & purification*
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Anti-Infective Agents / pharmacology*
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Antineoplastic Agents, Phytogenic / chemistry
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Antineoplastic Agents, Phytogenic / isolation & purification
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Croton / chemistry*
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Diterpenes / chemistry
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Diterpenes / isolation & purification*
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Diterpenes / pharmacology*
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Diterpenes, Clerodane / chemistry
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Diterpenes, Clerodane / isolation & purification*
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Diterpenes, Clerodane / pharmacology*
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Drug Screening Assays, Antitumor
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Drugs, Chinese Herbal / chemistry
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Drugs, Chinese Herbal / isolation & purification
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Gram-Positive Bacteria / drug effects
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HL-60 Cells
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Humans
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Inhibitory Concentration 50
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Mice
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Microbial Sensitivity Tests
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Molecular Structure
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Nuclear Magnetic Resonance, Biomolecular
Substances
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Anti-Infective Agents
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Antineoplastic Agents, Phytogenic
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Diterpenes
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Diterpenes, Clerodane
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Drugs, Chinese Herbal