Eicosapentaenoic-acid-derived isoprostanes: Synthesis and discovery of two major isoprostanes
摘要:
The stereospecific synthesis of two all-syn-EPA-derived isoprostanes (iPs), 5-epi-8,12-iso-iPF(3 alpha)-VI 17 and 8,12-iso-iPF(3 alpha)-VI 18, has been accomplished. These two synthetic probes have been used to discover and identify their presence in human urine. The eventual quantitative measurement of these two iPs may be a valuable index of oxidative stress in people with eicosapentaenoic acid-(EPA) and docosahexaenoic acid-(DHA) enriched phospholipids. (c) 2008 Elsevier Ltd. All rights reserved.
Total Synthesis of 8,12-iso-iPF3α-VI, an EPA-Derived Isoprostane: Stereoselective Introduction of the Fifth Asymmetric Center
摘要:
A new and stereoselective approach for the synthesis of all-syn isoprostanes is reported. This method, which is based on acid-catalyzed Diels-Alder reaction, allows the introduction of the side chain with a predetermined stereochemistry of the hydroxy group. The first total synthesis of an eicosapentaenoic acid (EPA)-derived iP, 8,12-iso-iPF(3 alpha)-VI 10, was performed using this approach.