Idasanutlin (RG-7388) is a second-generation, orally bioavailable, selective p53-MDM2 antagonist. MDM2 is an important negative regulator of the p 53 tumor suppressor and is expressed at high levels in a large proportion of acute myeloid leukemia (AML). Blocking the MDM2-p53 interaction stabilizes p53 and activates p-53 mediated cell death and inhibition cell growth. Idasanutlin is under clinical trial in phase III for treatment AML and in combinations with others drugs in phase I/II for treatment of multiple myeloma.

MPC-3100 is a fully synthetic, orally bioavailable, Hsp90 inhibitor developed by Myriad Pharmaceuticals, Inc for cancer treatment. MPC-3100 targets the N-terminal ATP-binding site of Hsp90 and blocks the activity of ATPase. MPC-3100 shows a broad spectrum anti-proliferative activity against various cancer cell lines, such as HCT-116, NCI-N87 and DU-145. MPC-3100 also inhibits tumor growth in the NCI-N87 gastric cancer xenograft mode. Moreover, pharmacokinetics studies show that MPC-3100 displays a superior oral pharmacokinetics profile, good overall exposure and a reasonable hepatic clearance rate. Phase I clinical studies demonstrate MPC-3100 is safe and tolerated when administered at doses below 600 mg per day

SAR-405838 is an inhibitor of the interaction between the oncoprotein murine double minute 2 (MDM2) and p53. SAR-405838 was investigated in phase I clinical trials in patients with locally advanced/metastatic solid tumor with wild-type TP53 or with TP53 mutation prevalence below 40%. SAR-405838 had an acceptable safety profile with limited activity in patients with advanced solid tumors.

p53 is a critical tumor suppressor and is the most frequently inactivated gene in human cancer. Inhibition of the interaction of p53 with its negative regulator MDM2 represents a promising clinical strategy to treat p53 wild-type tumors. AMG 232 is a potential best-in-class inhibitor of the MDM2-p53 interaction and is currently in clinical trials. Based on X-ray cocrystal structures a model of AMG 232 bound to MDM2 was developed. The model shows that the m-chlorophenyl, the p-chlorophenyl, and C-linked isopropyl fragments of AMG 232 bind to the Leu 26(p53), Trp 23(p53), and Phe 19(p53) pockets of MDM2, respectively. The carboxylic acid forms a salt bridge with His 96 and the isopropyl sulfone forms a novel interaction with the glycine shelf region of MDM2. AMG 232 in phase II in combination with trametinib and dabrafenib in subjects with metastatic melanoma; in phase I for the treatment of solid tumors, multiple myeloma and Acute Myeloid Leukemia.

3-Pyridinecarboxylic acid, 1-(4-methylphenyl)ethyl ester is an choleretic agent.

Bentamapimod (AS602801) a newly developed, orally-active, ATP competitive inhibitor of JNK, which is in phase IIa clinical trials for the treatment of endometriosis. Bentamapimod showed selective cytotoxic activity against serum-cultured cancer cells and cancer stem cells in vitro. It blocks T-cell proliferation and induces apoptosis. Bentamapimod was discovered by Merck Serono. Then PregLem (a member of the Richter Group) acquired worldwide rights in 2010.