13hotre(r)

13(S)-HOTrE(γ) is the 15-LO product of γ-linolenic acid. It is synthesized in human platelets, but its specific function is not known.

13(R)-HODE cholesteryl ester was originally extracted from atherosclerotic lesions. It remains uncertain whether the oxidized fatty acid portion of the molecule results from enzymatic lipoxygenation or from random lipid peroxidation. 13(R)-HODE cholesteryl ester can be used as a standard for analysis of chiral HODE cholesteryl esters.

Fluprostenol isopropyl ester, a potent agonist of the F-series prostaglandin receptor, serves as a prodrug utilized clinically as an ocular hypotensive agent for glaucoma treatment. An impurity, 13(R),14(R)-epoxy fluprostenol isopropyl ester, arises during its production, existing as a chiral enantiomer of the epoxide. The pharmacological properties of this specific enantiomer have yet to be thoroughly investigated.

13(S)-HOTrE, the 15-lipoxygenase (15-LO) metabolite of linolenic acid, is present in cell membranes and as a cholesteryl ester in atherosclerotic lesions, as well as in the biomembranes of soybeans subjected to 15-LO.

13(R)-HODE is the opposite enantiomer of the 13(S)-HODE produced when linoleic acid is incubated with soybean lipoxygenase. The presence of 13(R)-HODE in the supernatants and membranes of cultured bovine endothelial cells has been attributed to COX metabolism. 13(R)-HODE is a weak (IC50 = 2.7 μM) inhibitor of U-46619-induced platelet aggregation.