Damste, JSS

Geenevasen, JAJ

Gieskes, WWC

Hopmans, EC

Peletier, H

Rijpstra, WIC

Four previously unknown n-C-25 and n-C-27 heptaenes of the marine diatom Rhizosolenia setigera were isolated and identified using NMR spectroscopy. They possess six methylene interrupted (Z)-double bonds starting at C-3 and an additional terminal or n-2 Q-double bond. Structural and stable carbon isotopic evidence suggests that these polyenes are biosynthesized by chain elongation of the C22:6n-3 fatty acid, followed by decarboxylation and introduction of double bonds at specific positions.</p

Novel polyunsaturated n-alkenes in the marine diatom Rhizosolenia setigera

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Proceedings - University of Groningen