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Two novel naturally occurring α-methoxy acids from the phospholipids of two caribbean sponges

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Lipids

Abstract

The novel (5Z)-2-methoxy-5-hexadecenoic acid (1) was identified in the phospholipids of the spongeTethya crypta while the also novel acid (6Z)-2-methoxy-6-hexadecenoic acid (2) was found in the phospholipids of the Caribbean spongeSpheciospongia cuspidifera. The methoxy-fatty acids were mainly associated with phosphatidylethanolamine. The double bond positions were determined by gas chromatography/mass spectrometry on the corresponding dimethyl-disulfide adducts and the double bond stereochemistry was ascertained by gas chromatography/Fourier transform infrared spectroscopy. The fatty acid composition of the two sponges is reported.

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Abbreviations

ECL:

equivalent chain length

GC/MS:

gas chromatography/mass spectrometry

TLC:

thin-layer chromatography

FTIR:

Fourier transform infrared spectroscopy

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Carballeira, N.M., Sepúlveda, J.A. Two novel naturally occurring α-methoxy acids from the phospholipids of two caribbean sponges. Lipids 27, 72–74 (1992). https://doi.org/10.1007/BF02537064

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  • DOI: https://doi.org/10.1007/BF02537064

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