Eremophila dempsteri

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. 

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