Sesquiterpenic Epoxides and Alcohols Derived from Hydrocarbons of Vetiver Essential Oil
摘要:
Increasing the value of the hydrocarbon fraction of Bourbon vetiver essential oil (BVEO) was attempted by oxidation and reduction reactions to obtain odorous sesquiterpenic alcohols. Oxidation of this sesquiterpenic fraction of BVEO with m-chloroperbenzoic acid afforded three new oxidized products, including a zizaene monoepoxide and two diepoxides derived from zizanene and valencene. Reduction reaction of sesquiterpenic epoxides of BVEO led to three sesquiterpenols, including two zizanol epimers and an epoxialcohol derived from valencene, which have been synthesized in high yields (85-100%). Structural determination of these derivatives followed from one- and two-dimensional NMR spectroscopy and gas chromatography-mass spectrometry techniques.