VOLATILE OIL CONSTITUENTS OF SAGEBRUSH

Article abstract of DOI:10.1016/S0031-9422(00)80531-2

The volatile oil of Artemisia arbuscula arbuscula contained a new irregular monoterpene, 2,5-dimethyl-4-vinyl-1,5-hexadiene-3-ol (isolyratol), which was isolated and identified by spectral means.The optically pure furanoid (2S,5S)-trans-5-methyl-5-vinyltetrahydrofur-2-yl methyl ketone (arbusculone), was also characterized by transformation to known (2S,5S)-trans-linalyl oxide.The former component has never been isolated from natural sources prior to this study.The neutral pentane extract also contained several previously characterized non-head-to-tail monoterpenes including artemiseole, artemisia ketone, artemisyl acetate, methyl santolinate, and santolina triene, as well as the regular monoterpenes 1,8-cineole, camphor, p-cymene, camphene and the C6 fragment, terelactone. - Key Word Index: Artemisia arbuscula arbuscula; Asteraceae (Compositae); volatile oil; monoterpenes; irregular monoterpenes.