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New phospholipid fatty acids from the Caribbean sponge Ectyoplasia ferox
Author(s) -
Carbelleira Néstor M.,
Maldonado Marie E.
Publication year - 1989
Publication title -
lipids
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.601
H-Index - 120
eISSN - 1558-9307
pISSN - 0024-4201
DOI - 10.1007/bf02535143
Subject(s) - sponge , phospholipid , fatty acid , lipidology , chemistry , biochemistry , biology , stereochemistry , botany , membrane
Abstract The phospholipid fatty acids from the Caribbean sponge Ectyoplasia ferox were studied. The novel fatty acids 25‐methyl‐5,9‐heptacosadienoic (1) and 26‐methyl‐5,9‐heptacosadienoic (2) were identified in 3.4 and 2.0% abundance, respectively, representing the longest set of Δ5,9 iso and anteiso acids yet isolated from a marine sponge. The new acid 10,13‐dimethyltetradecanoic (3), the unusual acid 15‐methyl‐11‐hexadecenoic (4) and the also novel acid 9‐methyl‐11‐hexadecenoic (5) were also identified in E. ferox . The principal sterols isolated from E. ferox were 24‐ethylcholest‐5‐en‐3β‐ol (46%) and 24(R)‐methylcholesta‐5,22‐dien‐3β‐ol (14%).