Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5177203 | Phytochemistry Letters | 2013 | 5 Pages |
A 70% ethanol extract from the roots of Livistona chinensis has been investigated, led to the isolation of 18 compounds, including two new 6â²-O-acyl-β-d-glucosyl-β-sitosterols, 6â²-O-(2â³-hydroxyheptadecanoyl)-β-d-glucosyl-β-sitosterol (1) and 6â²-O-(icosa-9â³Z,12â³Z-dienoyl)-β-d-glucosyl-β-sitosterol (2), two new keto esters, ethyl 16-(dodeca-4â³â²Z,7â³â²Z-dienyl)-29-oxo-15-(tetradeca-5â³Z,8â³Z,11â³Z-trienyl) triacontanoate (7), and 16-hydroxy-8-oxohexadecyl tetradecanoate (9), a new unsaturated fatty acid, tetracosa-(11Z,14Z,18Z)-trienoic acid (8), as well as a new fatty alcohol, 10-decylnonadecane-1,19-diol (10). The structures of new compounds were elucidated, based on spectroscopic and chemical methods. The antiproliferative activity against four human tumor cell lines (K562, HL-60, HepG2, and CNE-1) was evaluated. Four compounds (1-3, 5) showed potent antiproliferative effects with the IC50 of 10-100 μM. To our knowledge, this is the first report of the occurrence of 6â²-O-acyl-β-d-glucosyl-β-sitosterol and 3-O-acyl-β-sitosterol in the genus Livistona. Keto fatty acids and their esters are also rare in higher plant.
Graphical abstract.Download full-size imageHighlights⺠Eighteen lipids were isolated from the roots of Livistona chinensis. ⺠Six compounds are new, and eight are first time isolated from the genus Livistona. ⺠Four compounds (1-3, 5) showed potent antiproliferative effects. ⺠Keto fatty acids and their esters are rare in higher plant.