Pentacyclic triterpenes from Chuquiraga ulicina

Four taraxastane triterpenes, 3β-acetoxy-6β-hydroxytaraxasta-20-ene, 6β-hydroxytaraxasta-20-en-3-one, 6β-hydroxytaraxasta-20-ene 3β-palmitate and 3β,6β-dihydroxytaraxasta-20-ene were isolated from the dichloromethane-methanol extract of Chuquiraga ulicina ssp. ulicina together with the known triterp...

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Bibliographic Details
Published in:Phytochemistry (Oxford) 1999-12, Vol.52 (7), p.1345-1350
Main Authors: Flagg, Melissa L., Valcic, Susanne, Montenegro, Gloria, Gomez, Miguel, Timmermann, Barbara N.
Format: Article
Language:English
Subjects:
Asteraceae
Biological and medical sciences
Chemical constitution
Chile
Chuquiraga ulicina
Desert Climate
Fundamental and applied biological sciences. Psychology
Lupanes
Models, Molecular
Molecular Conformation
Molecular Structure
Mutisieae
Pentacyclic triterpenes
Plant Extracts - chemistry
Plant physiology and development
Plants, Medicinal
Spectrometry, Mass, Secondary Ion
Taraxastanes
Triterpenes - chemistry
Triterpenes - isolation & purification
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Summary:Four taraxastane triterpenes, 3β-acetoxy-6β-hydroxytaraxasta-20-ene, 6β-hydroxytaraxasta-20-en-3-one, 6β-hydroxytaraxasta-20-ene 3β-palmitate and 3β,6β-dihydroxytaraxasta-20-ene were isolated from the dichloromethane-methanol extract of Chuquiraga ulicina ssp. ulicina together with the known triterpenes lupeol, lupenyl acetate, lupenone, friedelinol, 3β-acetoxy-30-nor-lupan-20-one, and 30-nor-lupan-3β-ol-20-one.
ISSN:0031-9422
1873-3700
DOI:10.1016/S0031-9422(99)00362-3