化合物8 黃色油狀;(+)-ESI-MS m/z 349[M+Na]+,365.2[M+K]+;1H-NMR(CDCl3 ,500 MHz)δ:0.88(3H,t,J=6.5 Hz,H-2′),1.25(33H,m),2.28(2H,t,J=7.5 Hz,H-2),4.12(2H,q,J=7.0 Hz,H-1′)。以上數據與文獻[14]對照一致,鑒定化合物為十九烷酸乙酯。
[參考文獻]
[1] Carlini E A,Contar J de D P,Silva-Filho A R,et al. Pharmacology of lemongrass Cymbopogon citratus Stapf. I. Effects of teas prepared from the leaves on laboratory animals[J]. J Ethnopharmacol,1986,17(1):37.
[2] 劉勇民,沙吾提·尹克木. 維吾爾藥誌. 上冊[M]. 新疆:新疆人民出版社,1986:320.
[3] Cheel J,Theoduloz C,Rodríguez J, et al. Free radical scavengers and antioxidants from lemongrass(Cymbopogon citratus(DC.)Stapf.)[J]. J Agric Food Chem,2005,53(7):2511.
[4] Hanson S W,Crawford M,Koker M E S,et al. Cymbopogonol,a new triterpenoid from Cymbopogon citrates [J]. Phytochemistry,1976,15(6):1074.
[5] Crawford M,Hanson S W,Koker M E S. The structure of cymbopogone,a novel triterpenoid from lemongrass[J]. Tetrahedron,1975,16(35):3099.
[6] Evans F E,Miller D W,Cairns T,et al. Structure analysis of proximadiol(cryptomeridiol)by 13C-NMR spectroscopy[J]. Phytochemistry,1982,21(4):937.
[7] Thappa R K,Dhar K L,Atal C K. Isointermedeol,a new sesquiterpene alcohol from Cymbopogon flexuosus [J]. Phytochemistry,1979,18(4):671.
[8] Bentley H R,Henry J A,Irvine D S,et al. Triterpene resinols and related acids. XXVIII. Nonsaponifiable fraction from Strychnos nuxvomica seed fat:structure of cycloartenol[J]. J Chem Soc,1953:3673.
[9] Kutney J P,Eigendorf G,Worth B R,et al. New triterpenes from the bark of western white pine(Pinus monticola Dougl. )[J]. Helv Chim Acta,1981,64(4):1183.
[10] Asakawa H,Matsuda R,Tori M,et al. Preparation of biologically active substances and animal and microbial metabolites from menthols,cineoles and kauranes[J]. Phytochemistry,1988,27(12):3861.
[11] Knapp H,Straubinger M,Fornari S,et al. (S)-3,7-dimethyl-5-octene-1,7-diol and related oxygenated monoterpenoids from petals of Rosa damascena Mill. [J]. J Agric Food Chem,1998,46(5):1966.
[12] Chatterjee T,De B K,Bhattacharyya D K. Bioconversions of citral and (±)-citronellal by Saccharomyces cerevisae-2415[J]. Indian J Chem B,1999,38B(9):1025.
[13] Atta-ur-Rahman,Yaqoob M,Farooq A,et al. Fungal transformation of (1R,2S,5R)-(-)-menthol by Cephalosporium aphidicola[J]. J Nat Prod,1998,61(11):1340.
[14] Toda S,Miyamoto M,Kinoshita H,et al. Selective mono-and bis(alkoxycarbonylation)s of olefins catalyzed by palladium in the presence of Cu(Ⅰ)or Cu(Ⅱ)chloride under remarkably mild conditions. Application to the synthesis of γ-butyrolactone derivatives[J]. Bull Chem Soc Jpn,1991,64(12):3600.