Sesquiterpenes from Cymbopogon proximusAuthor(s): Hesham I. El-Askary | Meselhy R. Meselhy | Ahmed M. Galal
Journal: Molecules ISSN 1420-3049
Volume: 8; Issue: 9; Start page: 670; Date: 2003;
Keywords: Cymbopogon proximus | Gramineae | proximadiol | sesquiterpenes | NMR | MS
In addition to four previously reported compounds: proximadiol (1), 5ÃŽÂ±-hydroxy-ÃŽÂ²-eudesmol (2), 1ÃŽÂ²-hydroxy-ÃŽÂ²-eudesmol (4) and 1ÃŽÂ²-hydroxy-ÃŽÂ±-eudesmol (5), two new sesquiterpenes, 5ÃŽÂ±-hydroperoxy-ÃŽÂ²-eudesmol (3) and 7ÃŽÂ±,11-dihydroxycadin-10(14)-ene (6) were isolated from the unsaponifiable fraction of the petroleum ether extract of Cymbopogon proximus STAPF. Isolation of compounds 2, 4 and 5 from the genus Cymbopogon is reported for the first time. The structure elucidation of these compounds was based primarily on 1D and 2D-NMR analyses.