Discovery and in Vivo Evaluation of the Potent and Selective PI3Kδ Inhibitors 2-((1S)-1-((6-Amino-5-cyano-4-pyrimidinyl)amino)ethyl)-6-fluoro-N-methyl-3-(2-pyridinyl)-4-quinolinecarboxamide (AM-0687) and 2-((1S)-1-((6-Amino-5-cyano-4-pyrimidinyl)amino)ethyl)-5-fluoro-N-methyl-3-(2-pyridinyl)-4-quinolinecarboxamide (AM-1430)

Felix Gonzalez-Lopez de Turiso; Xiaolin Hao; Youngsook Shin; Minna Bui; Iain D G Campuzano; Mario Cardozo; Michelle C Dunn; Jason Duquette; Benjamin Fisher; Robert S Foti; Kirk Henne; Xiao He; Yi-Ling Hu; Ron C Kelly; Michael G Johnson; Brian S Lucas; John McCarter; Lawrence R McGee; Julio C Medina; Daniela Metz; Tisha San Miguel; Deanna Mohn; Thuy Tran; Christine Vissinga; Sharon Wannberg; Douglas A Whittington; John Whoriskey; Gang Yu; Leeanne Zalameda; Xuxia Zhang; Timothy D Cushing

doi:10.1021/acs.jmedchem.6b00827

Discovery and in Vivo Evaluation of the Potent and Selective PI3Kδ Inhibitors 2-((1S)-1-((6-Amino-5-cyano-4-pyrimidinyl)amino)ethyl)-6-fluoro-N-methyl-3-(2-pyridinyl)-4-quinolinecarboxamide (AM-0687) and 2-((1S)-1-((6-Amino-5-cyano-4-pyrimidinyl)amino)ethyl)-5-fluoro-N-methyl-3-(2-pyridinyl)-4-quinolinecarboxamide (AM-1430)

J Med Chem. 2016 Aug 11;59(15):7252-67. doi: 10.1021/acs.jmedchem.6b00827. Epub 2016 Jul 25.

Authors

Felix Gonzalez-Lopez de Turiso^{1

2

3}, Xiaolin Hao^{1

2

3}, Youngsook Shin^{1

2

3}, Minna Bui^{1

2

3}, Iain D G Campuzano^{1

2

3}, Mario Cardozo^{1

2

3}, Michelle C Dunn^{1

2

3}, Jason Duquette^{1

2

3}, Benjamin Fisher^{1

2

3}, Robert S Foti^{1

2

3}, Kirk Henne^{1

2

3}, Xiao He^{1

2

3}, Yi-Ling Hu^{1

2

3}, Ron C Kelly^{1

2

3}, Michael G Johnson^{1

2

3}, Brian S Lucas^{1

2

3}, John McCarter^{1

2

3}, Lawrence R McGee^{1

2

3}, Julio C Medina^{1

2

3}, Daniela Metz^{1

2

3}, Tisha San Miguel^{1

2

3}, Deanna Mohn^{1

2

3}, Thuy Tran^{1

2

3}, Christine Vissinga^{1

2

3}, Sharon Wannberg^{1

2

3}, Douglas A Whittington^{1

2

3}, John Whoriskey^{1

2

3}, Gang Yu^{1

2

3}, Leeanne Zalameda^{1

2

3}, Xuxia Zhang^{1

2

3}, Timothy D Cushing^{1

2

3}

Affiliations

¹ Department of Therapeutic Discovery, §Department of Pharmacokinetics and Drug Metabolism, Amgen Inc. , 1120 Veterans Boulevard, South San Francisco, California 94080, United States.
² Department of Therapeutic Discovery, #Department of Inflammation Research, ⊥Drug Product Technologies, Amgen Inc. , One Amgen Center Drive, Thousand Oaks, California 91320, United States.
³ Department of Therapeutic Discovery, ¶Department of Pharmacokinetics and Drug Metabolism, Amgen Inc. , 360 Binney Street, Cambridge, Massachusetts 02142, United States.

PMID: 27411843
DOI: 10.1021/acs.jmedchem.6b00827

Abstract

Optimization of the potency and pharmacokinetic profile of 2,3,4-trisubstituted quinoline, 4, led to the discovery of two potent, selective, and orally bioavailable PI3Kδ inhibitors, 6a (AM-0687) and 7 (AM-1430). On the basis of their improved profile, these analogs were selected for in vivo pharmacodynamic (PD) and efficacy experiments in animal models of inflammation. The in vivo PD studies, which were carried out in a mouse pAKT inhibition animal model, confirmed the observed potency of 6a and 7 in biochemical and cellular assays. Efficacy experiments in a keyhole limpet hemocyanin model in rats demonstrated that administration of either 6a or 7 resulted in a strong dose-dependent reduction of IgG and IgM specific antibodies. The excellent in vitro and in vivo profiles of these analogs make them suitable for further development.

MeSH terms

Animals
B-Lymphocytes / drug effects
B-Lymphocytes / immunology
Class Ia Phosphatidylinositol 3-Kinase / metabolism
Dose-Response Relationship, Drug
Drug Discovery*
Humans
Mice
Models, Molecular
Molecular Structure
Phosphoinositide-3 Kinase Inhibitors*
Protein Kinase Inhibitors / chemical synthesis
Protein Kinase Inhibitors / chemistry
Protein Kinase Inhibitors / pharmacology*
Pyridines / chemical synthesis
Pyridines / chemistry
Pyridines / pharmacology*
Quinolines / chemical synthesis
Quinolines / chemistry
Quinolines / pharmacology*
Structure-Activity Relationship

Substances

2-((1S)-1-((6-amino-5-cyano-4-pyrimidinyl)amino)ethyl)-5-fluoro-N-methyl-3-(2-pyridinyl)-4-quinolinecarboxamide
2-((1S)-1-((6-amino-5-cyano-4-pyrimidinyl)amino)ethyl)-6-fluoro-N-methyl-3-(2-pyridinyl)-4-quinolinecarboxamide
Phosphoinositide-3 Kinase Inhibitors
Protein Kinase Inhibitors
Pyridines
Quinolines
Class Ia Phosphatidylinositol 3-Kinase