Abstract
The neutral leaf oil of Rocky Mountain juniper was analyzed by gas–liquid chromatography. d-Sabinene was found to be the major constituent (45.7%) and smaller amounts of d-limonene (11.4%), d-α-pinene (4.2%), γ-terpinene (1.15%), p-cymene (1.4%), l-linalool (1.2%), d-terpinen-4-ol (2.9%), citronellol (0.2%),l-β-elemene (0.2–0.3%), three isomeric cadinenes (2.7%), l-elemol (6.0%), and safrole (1.85%) were isolated. α-Thujene, camphene, car-3-ene, myrcene, α-terpinene, terpinolene, thujone, isothujone, methyl citronellate, sabinyl acetate, sabinol, geraniol, α- and δ-cadinol, and trans-isoeugenol were tentatively identified. An unidentified acetate (II) (4.7%) was isolated from the oxygenated sesquiterpene fraction and another appears to be present in trace amounts.The composition of the oils from the leaves of four local ornamental plants was found to differ significantly from that of the wild juniper.
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