Epoxide hydrolases convert the EETs into vicinal diols, with concurrent loss of much of their biological activity. (±)5(6)-DiHET is a substrate for sheep seminal vesicle COX, producing 5,6-dihydroxy prostaglandin E1 and F1α metabolites in vitro.

5,6-DiHET lactone is a lactonized form of 5,6-EET and 5,6-DiHET. In solution, 5(6)-EET degrades into 5(6)-DiHET and 5(6)-δ-lactone, which can be converted to 5(6)-DiHET and quantified by GC-MS. 5,6-DiHET potently induces vasodilation of isolated canine coronary arterioles, with 41 and 100% inhibition occurring at 0.01 and 100 pM, respectively. It also induces vasodilation in isolated […]