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Abstract:

Ester waxes and steryl glycosides of the grass Festuca argentina were studied. Saponification of the waxes from the petroleum ether extract led to n-hexacosanol as the major single linear alcohol, along with pentacyclic triterpenols, such as β-amyrin, germanicol, isobaurenol, lupeol, hopenol-a and hopeol, and low amounts of sterols, such as cholesterol, campesterol, stigmasterol, sitosterol and dihydrositosterol, identified by gas chromatography/mass spectrometry (GC/MS). Fatty acids were identified as methyl esters as C(12:0), C(14:0), C(16:0), C(18:0), C(18:2), and C(20:0). The occurrence of a wide chainlength range of fatty acids and a single linear alcohol closely matched for other reports on the tribe Festuceae. On the contrary, pentacyclic triterpenols with a variety of skeletons, especially isobauerenol, are not usual as esters of fatty acids in the Gramineae. Low amounts of steryl glycosides were also obtained from the methylene chloride percolate of the methanol extract. Upon acetylation followed by hydrolysis, aglycones were identified by capillary gas-liquid chromatography (GLC) and GC/MS. As Δ7-cholesterol, campesterol, stigmasterol, sitosterol, dihydrositosterol, and the sugars and glucose, xylose, and arabinose by GLC of the respective alditol acetates. This is the first report on the linear, steryl, and triterpenyl esters of F. argentina. It is noteworthy that Δ7-steryl glycosides are rare, and steryl monoarabinosides have not been previously reported on the family Gramineae.

Registro:

Documento: Artículo
Título:Linear, steroidal, and triterpene esters, and steryl glycosides from Festuca argentina
Autor:Casabuono, A.C.; Pomilio, A.B.
Filiación:PROPLAME-CONICET, Depto. de Quim. Orgánica, Ciudad Universitaria, 1428 Buenos Aires, Argentina
PROPLAME-CONICET, Depto. de Quim. Orgánica, Pabellón 2, 1428 Buenos Aires, Argentina
Palabras clave:alditol; arabinose; arabinoside; beta amyrin; campesterol; cholesterol; ester derivative; glucose; hexacosanol; lupeol; phytosterol; plant glycoside; sitostanol; sitosterol; stigmasterol; triterpene derivative; wax; xylose; article; gas liquid chromatography; grass; lipid composition; mass spectrometry; sterol analysis; Alcohols; Chromatography, Gas; Esters; Glycosides; Mass Spectrometry; Poaceae; Waxes
Año:1997
Volumen:32
Número:2
Página de inicio:205
Página de fin:210
DOI: http://dx.doi.org/10.1007/s11745-997-0026-z
Título revista:Lipids
Título revista abreviado:LIPIDS
ISSN:00244201
CODEN:LPDSA
CAS:Alcohols; Esters; Glycosides; Waxes
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00244201_v32_n2_p205_Casabuono

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Citas:

---------- APA ----------
Casabuono, A.C. & Pomilio, A.B. (1997) . Linear, steroidal, and triterpene esters, and steryl glycosides from Festuca argentina. Lipids, 32(2), 205-210.
http://dx.doi.org/10.1007/s11745-997-0026-z
---------- CHICAGO ----------
Casabuono, A.C., Pomilio, A.B. "Linear, steroidal, and triterpene esters, and steryl glycosides from Festuca argentina" . Lipids 32, no. 2 (1997) : 205-210.
http://dx.doi.org/10.1007/s11745-997-0026-z
---------- MLA ----------
Casabuono, A.C., Pomilio, A.B. "Linear, steroidal, and triterpene esters, and steryl glycosides from Festuca argentina" . Lipids, vol. 32, no. 2, 1997, pp. 205-210.
http://dx.doi.org/10.1007/s11745-997-0026-z
---------- VANCOUVER ----------
Casabuono, A.C., Pomilio, A.B. Linear, steroidal, and triterpene esters, and steryl glycosides from Festuca argentina. LIPIDS. 1997;32(2):205-210.
http://dx.doi.org/10.1007/s11745-997-0026-z