Eremophila cuneifolia

Monoterpenes do not appear to accumulate to any great extent in Eremophila species and their occurrence has been described for only a few cases. Thus, geranyl acetate (4) was isolated from E. abietina (13), 1,8-cineole (5) from E. scoparia (14) and E. dalyana (15), (+)-verbenone (6) from E. dempsteri (17) and (+)-fenchone (7) from E. caerulea (14). This last monoterpene is responsible for the scent which characterises this species in its normal habitat. From E. cuneifolia, m- andp-camphorene (8, 9) can be isolated from the steam distillate of the leaf resin (14) and, presumably, arise from dimerisation of the monoterpene myrcene during the isolation. 

The only other class of sesquiterpenes isolated from Eremophila is the aromadendrane type which is represented by a single compound, (-r)-spathulenol (94), found in E.cuneifolia (67), E. paisley, E. racemosa and E. drummondii var brevis (14). First isolated from Eucalyptus spathulata (84), this compound has since been found to occur in a broad spectrum of plant genera (85). 

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