Abstract
Two new lanostane-type triterpenes, 1 and 2, were isolated from Astraeus hygrometricus. The structures were established by IR, (1)H- and (13)C-NMR, MS, and X-ray crystallographic experiments. The triterpenes exhibited excellent in vitro toxicities against Candida albicans, comparable to standard antifungal antibiotics. The triterpene 2 significantly inhibited the growth of Leishmania donovani promastigotes in vitro. The triterpene skeleton may be considered a template structure in search for new compounds with anticandidal and leishmanicidal activity.
Copyright © 2012 Verlag Helvetica Chimica Acta AG, Zürich.
MeSH terms
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Animals
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Antifungal Agents / chemistry*
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Antifungal Agents / isolation & purification
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Antifungal Agents / pharmacology*
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Antiprotozoal Agents / chemistry*
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Antiprotozoal Agents / isolation & purification
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Antiprotozoal Agents / pharmacology*
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Basidiomycota / chemistry*
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Candida albicans / drug effects
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Candidiasis / drug therapy
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Crystallography, X-Ray
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Humans
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Leishmania donovani / drug effects
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Leishmaniasis, Visceral / drug therapy
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Mice
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Mice, Inbred BALB C
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Models, Molecular
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Triterpenes / chemistry*
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Triterpenes / isolation & purification
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Triterpenes / pharmacology*
Substances
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Antifungal Agents
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Antiprotozoal Agents
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Triterpenes