Phospholipid studies of marine organisms: III. New phospholipid fatty acids fromPetrosia ficiformis |
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Authors: | Eser Ayanoglu Robert D. Walkup Donato Sica Carl Djerassi |
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Affiliation: | (1) Department of Chemistry, Stanford University, 94305 Stanford, CA;(2) Istituto di Chimica Organica dell'Universita di Napoli, Naples, Italy |
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Abstract: | The fatty acyl components of the phospholipids from the spongePetrosia ficiformis consisted predominantly of branched, especially iso and anteiso acids. The two major components of the complex mixture are the hitherto unknown Z,Z-25-methyl-5,9-hexacosadienoic and Z,Z-24-methyl-5,9-hexacosadienoic acids. Other unknown acids are: 7,13,16-docosatrienoic acid, 15-methyldocosanoic acid, 15-methyltricosanoic acid and 24-methyl-5,9-pentacosadienoic acid. Short branched-chain fatty acids, presumably of bacterial origin, are considered to be the possible bioprecursors of these novel phospholipid constituents. The major phospholipids were PE, PC, PG, PS and PI. The distribution of fatty acids among the phospholipid classes was also studied. |
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