Seongjin Kim

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Isoprostanes (iPs) are prostaglandin-like molecules derived from autoxidation of polyunsaturated fatty acids (PUFAs). Urinary iP levels have been used as indices of in vivo lipid peroxidation. Thus far, it has only been possible to measure iPs derived from arachidonic acid in urine, because levels of iPs/neuroprostanes (nPs) derived from omega 3-PUFAs have(More)
Isoprostanes (iP's), a new class of natural products isomeric with prostaglandins, are formed as the result of free radical oxygenation of polyunsaturated fatty acids. We have identified these iP's and developed analytical methodology to measure them in biological fluids. The approach we took, which led to the discovery and measurement of iP's, is as(More)
Prostaglandin (PG) D2 acts through both the DP(1) receptor, which is coupled to adenylyl cyclase, and the DP2 receptor (chemoattractant receptor-homologous molecule expressed on Th2 cells), which is present on eosinophils, basophils, and Th2 cells and results in cell activation and migration. The most potent prostanoid DP2 agonist so far reported is(More)
The first total synthesis of 17,18,19,20-d4-iPF2alpha-III 32, a deuterated analog of iPF2alpha-III, is described. We have used this analog in some beta-oxidation studies with rat liver homogenates and have shown that 32 was metabolized to 17,18,19,20-tetradeutero-2,3-dinor-iPF2alpha-III 36 and 17,18,19,20-tetradeutero-2,3-dinor-5,6-dihydro-iPF2alpha-III 37.
The first total synthesis of 15(R)-Me-PGD2 3 is reported. The synthesis is based on the enantioselective and stereospecific syntheses of synthon 17 and its attachment to the five-membered ring by a olefin cross metathesis reaction. This approach permits the introduction of a side chain with a predetermined stereogenic center into the prostanoid ring,(More)
The first total synthesis of 15R-PGD(2)3 was accomplished. The approach used in this report is also an efficient method to produce 15R-PGE(2). 15R-PGD(2), a potential DP(2) receptor agonist, could be an important novel tool for defining the role of this receptor in inflammatory diseases.
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