Synthesis, biological evaluation, and metabolic stability of acrylamide derivatives as novel CCR3 antagonists
摘要:
Our laboratory has identified several acrylamide derivatives with potent CCR3 inhibitory activity. In the present study, we evaluated the in vitro metabolic stability (CL(int); mL/min/kg) of these compounds in human liver microsomes (HLMs), and assessed the relationship between their structures and CLint values. Among the compounds identified, N-{(3R)-1-[(6-fluoro-2-naphthyl) methyl] pyrrolidin-3-yl}-2-[ 1-(2-hydroxybenzoyl) piperidin-4-ylidene] acetamide (30j) was found to be a potent inhibitor (IC(50) = 8.4 nM) with a high metabolic stability against HLMs. (C) 2009 Elsevier Ltd. All rights reserved.
Synthesis, biological evaluation, and metabolic stability of acrylamide derivatives as novel CCR3 antagonists
摘要:
Our laboratory has identified several acrylamide derivatives with potent CCR3 inhibitory activity. In the present study, we evaluated the in vitro metabolic stability (CL(int); mL/min/kg) of these compounds in human liver microsomes (HLMs), and assessed the relationship between their structures and CLint values. Among the compounds identified, N-{(3R)-1-[(6-fluoro-2-naphthyl) methyl] pyrrolidin-3-yl}-2-[ 1-(2-hydroxybenzoyl) piperidin-4-ylidene] acetamide (30j) was found to be a potent inhibitor (IC(50) = 8.4 nM) with a high metabolic stability against HLMs. (C) 2009 Elsevier Ltd. All rights reserved.
Optimization starting with our lead compound 1 (IC50 = 4.9 nM) led to the identification of pyrrolidinyl phenylurea derivatives. Further modification toward improvement of the bioavailability provided (R)-1-(1-((6-fluoronaphthalen-2-yl)methyl)pyrrolidin-3-yl)-3-(2-(2-hydroxyethoxy)phenyl)urea 32 (IC50 = 1.7 nM), a potent and orally active CCR3 antagonist. (C) 2012 Elsevier Ltd. All rights reserved.