Abstract
A new ursane-type triterpene, named as cheiranthic acid (1), was isolated from the MeOH extract of whole plants of Oenothera cheiranthifolia (Onagraceae) along with an isomeric pair of known oleanane- and ursane-type triterpenes (arjunolic acid and asiatic acid) and three flavonol glucuronide analogues (quercetin 3-O-glucuronide, its n-butyl ester, and myricetin 3-O-glucuronide). Their structures were elucidated based on spectroscopic evidence.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Esters / chemistry
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Esters / isolation & purification
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Flavonoids / chemistry
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Flavonoids / isolation & purification
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Flavonols / chemistry
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Flavonols / isolation & purification*
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Glucuronides / chemistry
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Glucuronides / isolation & purification*
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Isomerism
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Methanol / chemistry
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Molecular Structure
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Oenothera / chemistry*
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Oleanolic Acid / analogs & derivatives
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Oleanolic Acid / chemistry
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Oleanolic Acid / isolation & purification
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Plant Extracts / chemistry
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Plants, Medicinal / chemistry*
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Quercetin / analogs & derivatives
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Quercetin / chemistry
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Quercetin / isolation & purification
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Spectrum Analysis
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Triterpenes / chemistry
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Triterpenes / isolation & purification*
Substances
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Esters
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Flavonoids
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Flavonols
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Glucuronides
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Plant Extracts
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Triterpenes
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oleanane
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quercetin 3-O-glucuronide
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Oleanolic Acid
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myricetin 3-O-glucuronide
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Quercetin
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Methanol