Antineoplastic unsaturated fatty acids from Fijian macroalgae.

Antineoplastic unsaturated fatty acids from Fijian macroalgae.
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DOI:
10.1016/j.phytochem.2008.07.005
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发表时间:
2008-10
期刊:
影响因子:
3.8
通讯作者:
Kubanek, Julia
Kubanek, Julia
中科院分区:
生物学2区
文献类型:
--
作者:
Jiang, Ren-Wang;Hay, Mark E.;Fairchild, Craig R.;Prudhomme, Jacques;Le Roch, Karine;Aalbersberg, William;Kubanek, Julia

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Phytochemical analysis of Fijian populations of the green alga Tydemania expeditionis led to the isolation of two new unsaturated fatty acids, 3(″)-hydroxy-octadeca-4(E),6(Z),15(Z)-trienoic acid (1) and 3(″)-hydroxy-hexadeca-4(E),6(Z)-dienoic acid (2), along with the known 3(″)-hydroxy-octadeca-4(E),6(Z)-dienoic acid (4). Investigations of the red alga Hydrolithon reinboldii led to identification of a new glycolipid, lithonoside (3), and five known compounds, 15-tricosenoic acid, hexacosa-5,9-dienoic methyl ester, β-sitosterol, 10(S)-hydroxypheophytin A, and 10(R)-hydroxypheophytin A. The structures of 1-3 were elucidated by spectroscopic methods (1D and 2D-NMR spectroscopy and ESI-MS). Compounds 1, 2, and 4, containing conjugated double bonds, demonstrated moderate inhibitory activity against a panel of tumor cell lines (including breast, colon, lung, prostate and ovarian cells) with IC50 values ranging from 1.3 to 14.4 μM. The similar cell selectivity patterns of these three compounds suggest that they might act by a common, but unknown, mechanism of action.
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