caa a22 4500 465765351 CHVBK 20180323111912.0 cr unu---uuuuu 170327e19900101xx s 000 0 eng 10.1007/BF02562431 doi (NATIONALLICENCE)springer-10.1007/BF02562431 Identification of the new 23-methyl-5,9-pentacosadienoic acid in the sponge Cribrochalina vasculum [Elektronische Daten] [Néstor Carballeria, Elba Reyes] The phospholipid fatty acids from the spongeCribrochalina vasculum were studied, revealing the presence of the new 23-methyl-5,9-pentacosadienoic acid (26∶2) which completes theiso-anteiso 26∶2 (Δ5,9) series. Other phospholipid fatty acids isolated include 26-methyl-5,9-heptacosadienoic (28∶2) and 25- methyl-5,9-heptacosadienoic (28∶2), as well as the branched acids 8-methylhexadecanoic and 11-methyloctadecanoic. The fatty acids described in this work were found in phosphatidylethanolamine, phosphatidylserine, and phosphatidylinositol. The sterol composition ofC. vasculum consisted of petrosterol, and interesting cyclopropane containing sterol, and the more common sitosterol. The phospholipid fatty acid composition of the demospongeIrcinia strobilina is also reported upon. the American Oil Chemists' Society (AOCS), 1990 Carballeria Néstor Department of Chemistry, University of Puerto Rico, 00931, Rio Piedras, Puerto Rico aut Reyes Elba Department of Chemistry, University of Puerto Rico, 00931, Rio Piedras, Puerto Rico aut Lipids Springer-Verlag 25/1(1990-01-01), 69-71 0024-4201 25:1<69 1990 25 11745 https://doi.org/10.1007/BF02562431 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02562431 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Carballeria Néstor Department of Chemistry, University of Puerto Rico, 00931, Rio Piedras, Puerto Rico aut NATIONALLICENCE 700 1- Reyes Elba Department of Chemistry, University of Puerto Rico, 00931, Rio Piedras, Puerto Rico aut NATIONALLICENCE 773 0- Lipids Springer-Verlag 25/1(1990-01-01), 69-71 0024-4201 25:1<69 1990 25 11745 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer