| Assay Method Information | |
| | Inhibition Assay |
| Description: | Screening of a series of molecules identified compounds (Compounds 5, 8, 16 to 18 and 43 of Table 3) that had improved potency against SRPK1 against a series of analogous compounds in which the R3 group of the respective compounds of the present invention (as defined by Formula I) was replaced with a pyridyl ring (FIGS. 1 and 2, in which the reference compounds had an IC50 of 6.00 nM and a ΔTm of 12.8° C. (FIG. 1); an IC50 of 38.8 nM (FIG. 2a ) and an IC50 of 3.8 nM (FIG. 2b )) as determined by kinase assay or differential scanning fluorimetry (temperature difference, ΔTm is inversely proportional to the log Kd, i.e. an increased temperature difference indicates a higher affinity and therefore a more potent inhibitor). These included furan, oxazole, pyrazole, thiazole, methyl-pyrazole, and oxadiazole moieties. Replacement of the pyridine ring of indolyl compound 38 in Table 3 with a furan ring resulted in a drop in potency (23.9 nM for compound 38 vs. 65 nM for the resulting furan analogue). |
| Affinity data for this assay | |
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