Abstract
The oxylipin chemistry of the temperate red alga Polyneura latissima has been investigated. The structures of three novel oxylipins, 8-[1′(Z),3′(Z),6′(Z)-dodecatriene-1′-oxyl-5(Z),7(E)-octadienoic acid, 7(S *)-hydroxy-8(S *),9(S *)-epoxy-5(Z), 11(Z),14(Z)-eicosatrienoic acid, 7(R *)-hydroxy-8(S *), 9(S *)-epoxy-5(Z), 11(Z),14(Z)-eicosatrienoic acid, together with two known eicosanoids, 9(S)-hydroxy-5(Z), 7(E), 11(Z), 14(Z)-eicosatetraenoic acid, and 9, 15-dihydroxy-5(Z),7(E),11(Z),13(E)-eicosatetraenoic acid, were elucidated by spectroscopic methods and chemical degradation. The oxygenation pattern of these oxylipins suggests that P. latissima metabolizes polyunsaturated fatty acids via a 9(S)-lipoxygenase.
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Abbreviations
- COSY:
-
correlation spectroscopy
- diHETE:
-
dihydroxyeicosatetraenoic acid
- GC-MS:
-
gas chromatography-mass spectrometry
- HETCOR:
-
heteronuclear correlation
- HETE:
-
hydroxyeicosatetraenoic acid
- HpETE:
-
hydroperoxyeicosatetraenoic acid
- HPLC:
-
high-performance liquid chromatography
- HR EIMS:
-
high-resolution electron impact mass spectrometry
- IR:
-
infrared
- LR:
-
Iow resolution
- MS:
-
mass spectral
- NMR:
-
nuclear magnetic resonance
- TLC:
-
thin-layer chromatography
- TMS:
-
trimethylsilyl
- UV:
-
ultraviolet
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Jiang, ZD., Gerwick, W.H. Novel oxylipins from the temperate red alga polyneura latissima: Evidence for an arachidonate 9(S)-lipoxygenase. Lipids 32, 231–235 (1997). https://doi.org/10.1007/s11745-997-0029-9
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DOI: https://doi.org/10.1007/s11745-997-0029-9