Pyrrophenone - CAS 341973-06-6

The group IVA phospholipase A2 (PLA2), known as calcium-dependent cytosolic PLA2 (cPLA2), selectively releases arachidonic acid (AA) from membrane phospholipids, playing a central role in initiating the synthesis of prostaglandins (PGs) and leukotrienes (LTs) . Pyrrophenone inhibits cPLA2α with an IC50 of 4.2 nM in enzyme assays and potently blocks the release of AA and the production of PGE2 and LTC4 in cells (IC50 = 24, 25, and 14 nM, respectively) . Its action is reversible and selective, as pyrrophenone inhibits the secretory type IB and IIA PLA2s with more than a hundred-fold less potency. Pyrrophenone has also been shown to inhibit calcium ionophore (A23187) -stimulated AA release from monocytic cells, interleukin-1-induced PGE2 synthesis in mesangial cells, and the production of PGE2, LTs, and platelet-activating factor by human neutrophils, always with maximal inhibition at concentrations below 1 μM.

Phospholipase, Others

Metabolism, Others

341973-06-6

C49H37F2N3O5S2

849.97

Fc1ccc(C(=O)c2ccccc2C(=O)N2C[C@@H](C[C@H]2CNC(=O)c2ccc(\C=C3/SC(=O)NC3=O)cc2)SC(c2ccccc2)(c2ccccc2)c2ccccc2)c(F)c1

-20°C

Ice Packs

Small Compound