CHEMBL3707563

Kinase Inhibition Assay: The compound of Example 39, 2-(1H-indol-5-ylamino)-6-(2,4-difluorophenylsulfonyl)-8-methylpyrido[2,3-d]pyrimidin-7(8H)-one, was subjected to a kinase inhibition assay for the kinases. Compounds were tested in 5 dose IC50 mode with 10-fold serial dilution starting at 10 μM. Staurosporine, a known protein kinase inhibitor, was tested in 5-dose IC50 mode with 3-fold serial dilution starting at 20 μM. Reactions were carried out in 10 μM ATP. The results are shown in Table 5. The results show that the compound of Example 39 is a kinase inhibitor highly selective for the kinase Plk2.