The essential oils were obtained from roots of Kogomegayatsuri (
Cyperus Iria L.) by steam distillation in 0.050_??_0.108%. The components were separated by means of elution and preparative gas chromatography. Identification of the known compounds were performed on agreement of the
tR in GC and MS spectra with those of the authentic specimens. The structure of new compounds were determined on the ground of chemical and spectral evidence.
As main components, cyperene, caryophyllene, γ-cadinene, caracolene, α-cadinol,
cis-3,
cis-5-dodecadienyl acetate [1], methyl 3, 7, 11-trimethyl
trans-2,
trans-6,
cis-9, 11-dodecatetraenoate, methyl 3, 7, 11-trimethyl
trans-2,
trans-6,
trans-9, 11-dodecatetraenoate, methyl 3, 7, 11-trimethyl-11-hydroxy
trans-2,
trans-6,
cis-9-dodecatrienoate, methyl 3, 7, 11-triemthyl-11-hydroxy
trans-2,
trans-6,
trans-9-dodecatrienoate, and as a minor one, α-pinene, β-pinene, limonene,
p-cyment, linalool, α-copaene, β-elemene, humulene, α-elemene, β-selinene, germacurene-D, γ-muurolene, δ-cadinene, calamenene, juniper camphor,
cis-3,
cis-5-dodecadien-1-ol [2], methyl 3, 7, 11-trimethyl
trans-2,
trans-6, 10-dodecatrienoate, C
20H
42, C
21H
44, C
22H
46, C
23H
48, C
24H
50 were identified.
The separated [1] and [2] were new compounds.
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