کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1253917 1496369 2006 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Chemical C2-elongation of polyunsaturated fatty acids
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Chemical C2-elongation of polyunsaturated fatty acids
چکیده انگلیسی

Three fatty acids were synthesized from commercially available α-linolenic, stearidonic and eicosapentaenoic acids by C2-elongation using a four step preparative technique. The parent fatty acid methyl esters were reduced to alcohols with LiAlH4, converted to bromides by treatment with triphenylphosphine dibromide, coupled with a lithiated C2-elongation block – 2,4,4-trimethyl-2-oxazoline – to form the corresponding 2,2-dimethyloxazolines of C2-elongated fatty acids, and finally, converted to the target polyunsaturated fatty acids by acidic alcoholysis. Yields of more than 60% were achieved on a gram scale. The resulting 11Z,14Z,17Z-eicosatrienoic, 8Z,11Z,14Z,17Z-eicosatetraenoic and 7Z,10Z,13Z,16Z,19Z-docosapentaenoic acids were obtained as colorless oils with >98% purity and could be used for biochemical investigations without additional purification. The elongated fatty acids were free of byproducts that could result from Z-E isomerization or migration of double bonds.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemistry and Physics of Lipids - Volume 144, Issue 2, November–December 2006, Pages 172–177
نویسندگان
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