Bioorganic and Medicinal Chemistry Letters (2021)
Update date:2022-08-10
Topics:
Kinzel, Olaf
Steeneck, Christoph
Anderhub, Simon
Hornberger, Martin
Pinto, Sheena
Morschhaeuser, Barbara
Albers, Michael
Sonnek, Christina
Wang, Yansong
Mallinger, Aurélie
Czekańska, Marta
Hoffmann, Thomas
Through structural modification of an oxalamide derived chemotype, a novel class of highly potent, orally bioavailable IDO1-specific inhibitors was identified. Representative compound 18 inhibited human IDO1 with IC50 values of 3.9 nM and 52 nM in a cellular and human whole blood assay, respectively. In vitro assessment of the ADME properties of 18 demonstrated very high metabolic stability. Pharmacokinetic profiling in mice showed a significantly reduced clearance compared to the oxalamides. In a mouse pharmacodynamic model 18 nearly completely suppressed lipopolysaccharide-induced kynurenine production. Hepatocyte data of 18 suggest the human clearance to be in a similar range to linrodostat (1).
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