T3724

Rolapitant (SCH619734) hydrochloride is a potent, selective, long-acting, and orally active neurokinin 1 (NK1) receptor antagonist with a K_i of 0.66 nM, which does not interact with CYP3A4 and demonstrates potent centrally-mediated anti-emetic activity in both acute and delayed ferret emesis models [1] [2].

(±)5(6)-DiHET lactone is a 1,5 cyclic ester derived from (±)5(6)-DiHET , which, in turn, is a potential derivative of epoxidation of arachidonic acid at the α-5 double bond. (±)4(5)-DiHDPA lactone is a derivative of docosahexaenoic acid that is analogous to (±)5(6)-DiHET lactone. It is the 1,4 cyclic ester derived from (±)4(5)-DiHDPA, which is produced by epoxidation of DHA at the α-4 double bond. Its biological activity is unknown.

Eicosapentaenoic acid is an ω-3 polyunsaturated fatty acid that is abundant in marine organisms and fish oils. EPA is metabolized, in part, through cytochrome P450-catalyzed epoxidation followed by conversion to the vicinal diols by epoxide hydrolases. (±)5(6)-DiHETE is a possible metabolite produced from EPA following epoxidation of the α-5 double bond. The biological activity of (±)5(6)-DiHETE has not been documented.

Eicosapentaenoic acid is metabolized, in part, through cytochrome P450-catalyzed epoxidation followed by conversion to the vicinal diols by epoxide hydrolases. (±)5(6)-DiHETE is a possible metabolite produced from EPA following epoxidation of the α-5 double bond. (±)5(6)-DiHETE lactone is a 1,5 cyclic ester derived from (±)5(6)-DiHETE. While its biological activity is unknown, the selective capacity of (±)5(6)-DiHETE to form this lactone can be utilized to specifically quantify (±)5(6)-DiHETE in biological samples.

Pantoprazole sulfide is a metabolite of the gastric H+/K+ ATPase pump inhibitor pantoprazole . Pantoprazole is metabolized by the cytochrome P450 (CYP) isomers CYP2C19 and CYP3A4 to form pantoprazole sulfide.

Pantothenate Kinase Inhibitor (PANKi) is a reversible inhibitor of pantothenate kinase (PanK; IC50s = 70, 92, and 25 nM for PanK1β, PanK2, and PanK3, respectively), the rate-limiting enzyme in the synthesis of coenzyme A .1It binds to the ATP-PanK3 complex with an apparent binding constant of 300 nM and exhibits mixed-type inhibition with respect to ATP and pantothenate. PANKi inhibits CoA biosynthesis in C3A cells (IC50= 0.9 μM) with no effect on cell viability when used at concentrations up to 8 μM. PANKi (5 μM) synergizes with BSO to induce ferroptosis in PANC-1 cells and sensitizes the cells to imidazole ketone erastin-induced ferroptosis.2 1.Sharma, L.K., Leonardi, R., Lin, W., et al.A high-throughput screen reveals new small-molecule activators and inhibitors of pantothenate kinasesJ. Med. Chem.58(3)1563-1568(2015) 2.Badgley, M.A., Kremer, D.M., Maurer, H.C., et al.Cysteine depletion induces pancreatic tumor ferroptosis in miceScience368(6486)85-89(2020)