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Identification of the new 18-hexacosenoic acid in the spongeThalysias juniperina

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Lipids

Abstract

The phospholipid fatty acids from the spongeSpheciospongia cuspidifera were studied revealing the presence of the rare 10-octadecenoic acid (10−18∶1) and a new 2-methoxyhexadecenoic acid. The phospholipid fatty acids fromThalysias juniperina were also studied revealing the presence of the hitherto unreported 18-hexacosenoic acid (18−26∶1). These results tend to indicate that the biosynthetic pathway from 10−18∶1 to 18−26∶1 may be operative in nature. The phospholipid mixture from the sponges was also analyzed by31P-NMR and shown to mainly consist of phosphatidylethanolamine, phosphatidylserine, phosphatidylinositol, and phosphatidylglycerol. Phosphatidylcholine was not found in the sponges analyzed in this work.

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Abbreviations

PC:

phosphatidylcholine

PE:

phosphatidylethanolamine

PG:

phosphatidylglycerol

PI:

phosphatidylinositol

PS:

phosphatidylserine

TLC:

thin-layer chromatography

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Authors and Affiliations

  1. Department of Chemistry, University of Puerto Rico, Rio Piedras, 00931, Puerto Rico

    Nestor M. Carballeira, Fathi Shalabi & Maria E. Maldonado

Authors
  1. Nestor M. Carballeira
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  2. Fathi Shalabi
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  3. Maria E. Maldonado
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Carballeira, N.M., Shalabi, F. & Maldonado, M.E. Identification of the new 18-hexacosenoic acid in the spongeThalysias juniperina . Lipids 25, 235–237 (1990). https://doi.org/10.1007/BF02535754

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  • DOI: https://doi.org/10.1007/BF02535754

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