Oxidation of oxa and thia fatty acids and related compounds catalysed by 5- and 15-lipoxygenase
| Autor: | Christopher J. Easton, Michael J. Pitt, Antonio Ferrante, Deborah A. Rathjen, Thomas Alistair Robertson, Alfred Poulos |
|---|---|
| Rok vydání: | 2001 |
| Předmět: |
Stereochemistry
Clinical Biochemistry Pharmaceutical Science Alcohol Ether Biochemistry Catalysis chemistry.chemical_compound Acetic acid Drug Stability Drug Discovery Aspartic acid Arachidonate 15-Lipoxygenase Molecular Biology Chromatography High Pressure Liquid chemistry.chemical_classification Arachidonate 5-Lipoxygenase Autoxidation Organic Chemistry Dicarboxylic acid chemistry Succinic acid Fatty Acids Unsaturated Molecular Medicine Arachidonic acid Soybeans Oxidation-Reduction |
| Zdroj: | Bioorganic & Medicinal Chemistry. 9:317-322 |
| ISSN: | 0968-0896 |
| DOI: | 10.1016/s0968-0896(00)00246-7 |
| Popis: | The modified fatty acids, (Z,Z,Z)-(octadeca-6,9,12-trienyloxy)acetic acid, (Z,Z,Z)-(octadeca-9,12,15-trienyloxy)acetic acid, (all-Z)-(eicosa-5,8,11,14-tetraenyloxy)acetic acid, (all-Z)-(eicosa-5,8,11,14-tetraenylthio)acetic acid, 3-[(all-Z)-(eicosa-5,8,11,14-tetraenylthio)]propionic acid, (all-Z)-(eicosa-5,8,11,14-tetraenylthio)succinic acid, N-[(all-Z)-(eicosa-5,8,11,14-tetraenoyl)]glycine and N-[(all-Z)-(eicosa-5,8,11,14-tetraenoyl)]aspartic acid, all react with soybean 15-lipoxygenase. The products were treated with triphenylphosphine to give alcohols, which were isolated using HPLC. Analysis of the alcohols using negative ion tandem electrospray mass spectrometry, and by comparison with compounds obtained by autoxidation of arachidonic acid, shows that each enzyme catalysed oxidation occurs at the omega -6 position of the substrate. In a similar fashion, it has been found that (Z,Z,Z)-(octadeca-6,9,12-trienyloxy)acetic acid, (Z,Z,Z)-(octadeca-9,12,15-trienyloxy)acetic acid, (all-Z)-(eicosa-5,8,11,14-tetraenylthio)acetic acid and N-[(all-Z)-(eicosa-5,8, 11.14-tetraenylthio)]propionic acid each undergoes regioselective oxidation at the carboxyl end of the polyene moiety on treatment with potato 5-lipoxygenase. Neither (all-Z)-(eicosa-5,8,11,14-tetraenylthio)succinic acid nor N-[(all-Z)-(eicosa-5,8,11,14-tetraenoyl)]aspartic acid reacts in the presence of this enzyme, while N-[(all-Z)-(eicosa-5,8,11,14-tetraenoyl)]glycine affords the C11' oxidation product. The alcohol derived from (Z,Z,Z)-(octadeca-6,9, 12-trienyloxy)acetic acid using the 15-lipoxygenase reacts at the C6' position with the 5-lipoxygenase. (C) 2001 Elsevier Science Ltd. All rights reserved. |
| Databáze: | OpenAIRE |
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