Essential oil components of Alaska cedar heartwood Public Deposited

http://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/3484zk755

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  • The essential oil of Alaska cedar heartwood is known to contain compounds which contribute to the remarkable durability of this species. While previous research has identified several compounds, a complete description of this oil, which has a "burnt-grape fruit" odor, has not been undertaken. In this research a profile of the oil is given in which the major components are identified by GC-MS, isolation and spectroscopic techniques. The major components of the steam distilled essential oil were identified as nootkatin, nootkatone, valencene, nootaktene, carvacrol, methyl carvacrol, nootkatol, and eremophil- 1(10),11-dien-13-ol. In addition, it was found that the diethyl ether extract of the heartwood contained 1(10)- eremophilen-11,12-epoxide as a major component in addition to the compounds found in the steam distilled essential oil. 1(10)-Eremophilen-11,12-epoxide apparently does not survive the condition of steam distillation. Nootkatol, eremophil-1(10),11-dien-13-ol and 1(10)- eremophilen-11,12-epoxide have not been previously reported in Alaska cedar. Nootkatol is a known compound having been reported in other plants. However, eremophil-1(10),11-dien-13-ol and 1(10)-eremophilen- 11,12-epoxide represent new chemical structures to science being described here for the first time.
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