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Novel brominated phospholipid fatty acids from the Caribbean sponge Agelas sp.
Author(s) -
Carballeira Néstor M.,
Emiliano Anastacio
Publication year - 1993
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/bf02536001
Subject(s) - chemistry , sponge , ergosterol , phosphatidylethanolamine , stereochemistry , lipidology , phospholipid , clinical chemistry , fatty acid , organic chemistry , biochemistry , biology , membrane , phosphatidylcholine , botany
Abstract The very long‐chain fatty acids, (5 E ,9 Z )‐6‐bromo‐5,9‐tetracosadienoic, (5 E ,9 Z )‐6‐bromo‐23‐methyl‐5,9‐tetracosadienoic, (5 E ,9 Z )‐6‐bromo‐5,9‐pentacosadienoic and (5 E ,9 Z )‐6‐bromo‐24‐methyl‐5,9‐pentacosadienoic acids, were identified in the phospholipids (mainly phosphatidylethanolamine) of the sponge Agelas sp. Structure elucidation was accomplished by means of mass spectrometry and chemical transformations, including deuteration with Wilkinson's catalyst. All of the sterols from the sponge had the Δ5,7 nucleus, with 24‐methylcholesta‐5,7,22‐trien‐3β‐ol (ergosterol) and 24‐ethylcholesta‐5,7,22‐trien‐3β‐ol being the most abundant.