Phospholipid studies of marine organisms: new branched fatty acids from Strongylophora durissima.
Phospholipid studies of marine organisms: new branched fatty acids from Strongylophora durissima.
复制标题
海洋生物的磷脂研究：来自硬脂藻的新支链脂肪酸。
作者：
Dasgupta,A;Ayanoglu,E;Djerassi,C
The phospholipids of the spongeStrongylophora durissimawere 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 (C14−C19) and very long chain (C25−C30) “Demospongic” acids. Three novel branched Δ5monounsaturated acids,Z‐19‐methyl‐5‐pentacosenoic,Z‐19‐methyl‐5‐hexacosenoic andZ‐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.
