Study on the chemical constituents of the essential oil of the leaves ...

<strong>Study</strong> on the chemical constituents of the essential oil of the leaves of Eucalyptus globulus Labill / Asian Journal ofTraditional Medicines, 2009, 4 (4)Continued table 141 29.311 C 15H 26O cubenol 0.0842 29.422 C 15H 26O ledol 0.0643 29.621 C 15H 24O spathulenol 0.1144 30.068 C 15H 26O (-)-globulol 2.7745 44 30.261 30.068 C 15 H 26 CO 15H 26O α-cadinol (-)-globulol 2.77 0.5746 30.490 C 15H 26O γ-eudesmol 0.2245 30.261 C 15 H 26 O -cadinol 0.5747 30.595 - unidentified 0.1248 44 31.084 30.068 15 26 C 15H 26O α-eudesmol (-)-globulol 2.7746 30.490 C 0.3915 H 26 O -eudesmol 0.2249 31.766 C 15H 26O β-eudesmol 0.0445 30.261 C 15 H 26 O -cadinol 0.5750 47 31.886 30.595 - C 15H 26O 1, unidentified 2, 3, 3a, 4, 5, 6, 7-octahyfro-α, 3, 8-t-5- 0.12 0.07azulenemethanol46 30.490 15 26 -eudesmol 0.2248 31.084 C 15 H 26 O -eudesmol 0.3947 30.595 - unidentified 0.12α-terpineol 49 acetate 31.766 (3.1 %), geranyl C 15 H 26 Oacetate (0.71 %), -eudesmol constituents are similar to those given 0.04 in the literature[10, 11]L-pinocarveol 48 (0.36 31.084 %), β-sabinene C 15 H 26 O (0.25 %), and -eudesmol . Some constituents, such as β-sabinene, 0.39 linalool,1,2,3,3a,4,5,6,7-octahyfro-,3,8-t-5-azulenemetterpinolene 50 (0.1931.886 %). A portion C (0.26 %) of the total isoledene, ledene, epiglobulol, and cubenol had no49 31.766 15 Hconstituents remains unidentified. 15 26 O0.0726 -eudesmol 0.04literature hanol data [10, 11] . This possibly may be due to theThe yield of essential oil and the content 1,2,3,3a,4,5,6,7-octahyfro-,3,8-t-5-azulenemetof fact that the trees grown in different regions may exhibit8-eucalyptol 50 are 31.886 within the C 15 values H 26 O reported in the differences in their chemical constituents. 0.07literature [12] and the percentage contents of the mainhanolAFig.2 The MS of - pinene in the essential oil of Eucalyptus globulus Labill leavesBFig.2 The MS of - pinene in the essential oil of Eucalyptus globulus Labill leavesFig. 2. A. The Fig.3 MS of The α-pinene MS of in - the essential pinene in oil NIST02 of Eucalyptus library globulus data of Labill the GC-MS leave; B. system The MS of α-pinene in NIST02 librarydata of the GC-MS systemFig.3 The MS of - pinene in NIST02 library data of the GC-MS system137