Understanding Pharmacokinetic Disconnect in Preclinical Species for 4-Aminoquinolines: Consequences of Low Permeability and High P-glycoprotein Efflux Ratio on Rat and Dog Oral Pharmacokinetics

Receptor Interacting Protein 2 (RIP2) kinase inhibitors have been reported for therapeutic opportunities in inflammatory bowel diseases such as Ulcerative Colitis and Crohn's disease. During lead optimization, team identified 4-aminoquinoline series and several compounds from this series were investigated in rat and dog pharmacokinetic studies. While compounds such as GSKA and GSKB demonstrated acceptable pharmacokinetics in rat and dog, further...