6,9-Guaiadiene

The composition of the Bourbon oil differs quantitatively as well as qualitatively from that of North African oil. However, they both contain an unusually high percentage of (-)-citronellol, isomenthone, formates, and tiglates, which are rarely found in essential oils. The two types of oil can be differentiated by two characteristic minor constituents the Bourbon type contains (-)-6,9-guaiadiene [36577-33-0] and the African type contains 10-e i-7-eudesmol [15051-81-7] see p. 167 [521-531b]. 

For this sample the results show identification of 13 major components out of 289, making up 81.25% of the total components. The volatile monoterpene -pinene (peak 1) is the first off the column. The alcohols citronellol (10) and geraniol (11) are responsible for the odour characteristics of geranium, which is lifted and activated by the two rose oxides (2 and 3). The 6,9-guaiadiene (7) is a non-terpene hydrocarbon that acts as a back note but it is not a powerful odour. Component 12 is geranyl butyrate component 13 is epi—eudesmol. Chromatograms and data supplied by Jenny Warden of Traceability. 

Confirmatory evidence has been provided for the revised structure of a guaiadiene (428) present in geranium oil/ Another component of costus oil has been identified as the triene acid (429) and an isomer (430) of guaioxide (cf. Vol. 1, p. Ill) has been isolated from the roots of a Ligularia species/ ... 

Guaiacylpropane. See Dihydroeugenol 1(5),7(11)-Guaiadiene. See.Guaiene Guaianesin. See Guaifenesin Guaiazulene... 

Synonyms 1,4-Dimethyl-7-isopropenyl-A9,10-octahydroazulene 2,8-Dimethyl-5-isopropylidene-bicyclo [5.3.0] dec-1 (7)-ene 1(5),7(11)-Guaiadiene p-Guaiene (1S-cis)-1,2,3,4,5,6,7,8-Octahydro-7-isopropylidene-1,4-dimethylazulene Empirical C15H24... 

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