Abstract
New eremophilane sesquiterpenes, 6beta-sarracinoyloxy-1beta,10beta-epoxy-furanoeremophilane (1), 6alpha-angeloyloxy-10betaH-furanoeremophil-1-one (2), 1alpha-hydroxy-9-deoxycacalol (3), and 1beta-hydroxy-11(R,S)-8-oxoeremophil-6,9-dien-12-al (4a+4b), together with five known sesquiterpenes (5-9) were isolated from the roots and rhizomes of Ligularia macrophylla. The structures were elucidated by spectroscopic methods including 2D NMR techniques, and the structure of 1 was confirmed by a single-crystal X-ray diffraction experiment. The compounds were also evaluated for cytotoxic activity against human lung carcinoma (A-549) and human breast adenocarcinoma (MCF-7) and were found to show only very weak cytotoxicity.
Publication types
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Research Support, N.I.H., Extramural
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Research Support, Non-U.S. Gov't
MeSH terms
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Antineoplastic Agents, Phytogenic / chemistry
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Antineoplastic Agents, Phytogenic / isolation & purification*
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Antineoplastic Agents, Phytogenic / pharmacology
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Asteraceae / chemistry*
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Crystallography, X-Ray
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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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Drugs, Chinese Herbal / pharmacology
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Female
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Humans
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Molecular Conformation
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Molecular Structure
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Naphthalenes / chemistry
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Naphthalenes / isolation & purification*
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Naphthalenes / pharmacology
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Plant Roots / chemistry
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Plants, Medicinal / chemistry*
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Polycyclic Sesquiterpenes
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Rhizome / chemistry
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Sesquiterpenes / chemistry
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Sesquiterpenes / isolation & purification*
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Sesquiterpenes / pharmacology
Substances
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Antineoplastic Agents, Phytogenic
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Drugs, Chinese Herbal
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Naphthalenes
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Polycyclic Sesquiterpenes
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Sesquiterpenes
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eremophilane compounds