10-Ethenyl-19-norprogesterone (Org OD 02-0) is a selective agonist for the membrane progesterone receptor α (mPRα) with an IC50 of 33.9 nM, known to activate MAPK activity, and inhibit prolactin (PRL) secretion in the pituitary [1] [2].

Matairesinol has radical and superoxide scavenging activities,; it also has anti-angiogenic activity by suppressing mROS signaling , can decrease hypoxia-inducible factor-1α± in hypoxic HeLa cells.

Selinidin decreases phosphorylation of phospholipase C-gamma1, p38 mitogen-activated protein kinase, and IkappaB-alpha upon FcepsilonRI stimulation.

Trichosanatine and squamosamide, as potential candidates as lead compounds for further study in drug development process with the PP2A- α protein. Trichosanatine can alleviate oxidized low-density lipoprotein induced endothelial cells injury via inhibiting the LOX-1/p38 MAPK pathway.

RWJ-67657 (JNJ 3026582) is an orally active and selective p38α and p38β MAPK inhibitor (IC50s: 1 and 11 μM, respectively). RWJ-67657 shows no activity at p38γ and p38δ and shows a cardioprotective effect.