Abstract
The constituents of the essential oils of Oenothera grandiflora L'HÉR. ex AIT. and O.erythrosepala BORBAS have been studied. The essential oils were obtained by steam distillation of the herb parts. Each essential oil as separated into individual components by a combination of chemical method and elution chromatography or preparative gas chromatography. These components were identified from their infrared spectrum, mass spectrum, nuclear magnetic resonance spectrum. As a result, seventy-nine compounds were identified as the constituents of these oils: α pinene, camphene, β-pinene, β-myrcene, limonene, iso-amyl alcohol, n-amyl alcohol, n-hexanol, cis-3-hexen-1-ol, n-nonyl aldehyde, 1-octen-3-ol, n-heptanol, trans-linalool oxide, furfural, cis-linalool oxide, benzaldehyde, furfuryl acetate, linalool, n-octanol, linalyl acetate, furfuryl alcohol, β-caryophyllene, α-terpineol, benzyl acetate, α-terpinyl acetate, γ-muurollene, benzyl alcohol, δ-cadinene, γ-cadinene, calamenene, β-phenyl ethyl alcohol, n-C10_??_C38 aliphatic hydrocarbons, n-C4_??_C18 aliphatic fatty acids, 2-furan carboxylic acid, benzoic acid, oleic acid, linoleic acid, phenol, o-cresol, p-cresol, thymol, eugenol. The major component of each essential oil was furan derivative.
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