Abstract
Three lanostanoids, 3beta-methoxycycloartan-24(24(1))-ene (1), 3beta,23beta-dimethoxycycloartan-24(24(1))-ene (2), and 3beta,23beta-dimethoxy-5alpha-lanosta-24(24(1))-ene (3), were isolated from the leaves of Amentotaxus formosana. The structures of new compounds 2 and 3 were determined by NMR and MS studies, and the structure of 3 was further confirmed by X-ray crystallographic analysis.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Crystallography, X-Ray
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Lanosterol / analogs & derivatives
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Lanosterol / chemistry
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Lanosterol / isolation & purification*
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Mass Spectrometry
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Molecular Conformation
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Molecular Structure
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Nuclear Magnetic Resonance, Biomolecular
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Plant Leaves / chemistry
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Plants, Medicinal / chemistry*
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Spectrophotometry, Infrared
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Taiwan
Substances
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3beta,23beta-dimethoxy-5alpha-lanosta-24(24(1))-ene
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3beta,23beta-dimethoxycycloartan-24(24(1))-ene
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3beta-methoxycycloartan-24(24(1))-ene
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Lanosterol