Abstract
Two new sesquiterpenes, leitneridanin A (1) and leitneridanin B (2), and seven known compounds, lirioresinol B, (-)-pinoresinal, (+)-lariciresinol, quassimarin (3), simalikalactone D (4), 1-methoxycanthinone (5), and 5-methoxycanthinone (6), were isolated from Leitneria floridana. Their structures were identified on the basis of spectral data. In vitro biological evaluation showed that 5 is a potent anti-HIV agent (EC(50) 0.26 g/mL; TI >39) and that 3-6 suppressed the growth of a panel of human tumor cell lines (KB, A-549, HCT-8, CAKI-1, MCF-7, and SK-MEL-2). Compounds 3 and 4 were significantly active, with ED(50) values in the range of 0.26-0.012 g/mL.
Publication types
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Research Support, U.S. Gov't, P.H.S.
MeSH terms
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Anti-HIV Agents / chemistry
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Anti-HIV Agents / isolation & purification*
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Anti-HIV Agents / pharmacology
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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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Drug Screening Assays, Antitumor
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Humans
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Microbial Sensitivity Tests
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Molecular Structure
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Rosales / chemistry*
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Sesquiterpenes / chemistry
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Sesquiterpenes / isolation & purification*
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Sesquiterpenes / pharmacology
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Spectrum Analysis
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Tumor Cells, Cultured
Substances
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Anti-HIV Agents
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Antineoplastic Agents, Phytogenic
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Sesquiterpenes
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leitneridanin A
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leitneridanin B