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Phospholipid studies of marine organisms: New branched fatty acids from Strongylophora durissima
Author(s) -
Dasgupta Amitava,
Ayanoglu Eser,
Djerassi Carl
Publication year - 1984
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/bf02534470
Subject(s) - phosphatidylethanolamine , phosphatidylcholine , phospholipid , phosphatidylglycerol , phosphatidylserine , phosphatidylinositol , biochemistry , chemistry , fatty acid , polyunsaturated fatty acid , sponge , stereochemistry , biology , botany , membrane , kinase
The phospholipids of the sponge Strongylophora durissima were analyzed. The major phospholipids present were phosphatidylethanolamine (PE), phosphatidylcholine (PC), phosphatidylserine (PS), phosphatidylglycerol (PG) and phosphatidylinositol (PI). The major fatty acid components of the phospholipids consisted of short chain (C 14 −C 19 ) and very long chain (C 25 −C 30 ) “Demospongic” acids. Three novel branched Δ 5 monounsaturated acids, Z ‐19‐methyl‐5‐pentacosenoic, Z ‐19‐methyl‐5‐hexacosenoic and Z ‐19‐methyl‐5‐heptacosenoic acids were encountered in the sponge. The 3‐saturated counterparts of these compounds, 19‐methylpentacosanoic, 19‐methylhexacosanoic and 19‐methylheptacosanoic acids, as well as 19‐methylpentacosanoic and 20‐methyloctacosanoic acids also are hitherto undescribed acids present in the sponge. Trace amounts of 2 very long chain acids also were detected and their structures tentatively assigned as 19,21‐dimethylheptacosanoic and 20,22‐dimethyloctacosanoic acids. The distribution of these fatty acids according to phospholipid head groups also was described.