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.
Similar content being viewed by others
Abbreviations
- ECL:
-
equivalent chain length
- GC/MS:
-
gas chromatography/mass spectrometry
- TLC:
-
thin-layer chromatography
- FTIR:
-
Fourier transform infrared spectroscopy
References
Ayanoglu, E., Popov, S., Kornprobst, J.M., Aboud-Bichara, A., and Djerassi, C. (1983)Lipids 18, 830–836.
Carballeira, N., and Lopez, M.R. (1989)Lipids 24, 89–91.
Ayanoglu, E., Kurtz, K., Kornprobst, J.M., and Djerassi, C. (1985)Lipids 20, 141–144.
Privett, O.S., Dougherty, K.A., Erdahl, W.L., and Stolyhwo, A. (1973)J. Am. Oil Chem. Soc. 50, 516–520.
Carreau, J.P., and Dubacq, J.P. (1978)J. Chromatogr. 151, 384–390.
Francis, G.W. (1981)Chem. Phys. Lipids 29, 369–374.
Buser, H.-R., Arn, H., Geurin, P., and Rauscher, S. (1983)Anal. Chem. 55, 818–822.
Ayanoglu, E., Kornprobst, J.M., Aboud-Bichara, A., and Djerassi, C. (1983)Tetrahedron Lett. 24, 1111–1114.
Author information
Authors and Affiliations
About this article
Cite this article
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
Received:
Revised:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF02537064