Discovery of 5-Phenyl-N-(pyridin-2-ylmethyl)-2-(pyrimidin-5-yl)quinazolin-4-amine as a Potent I Kur Inhibitor. 2016

Heather J Finlay, and James A Johnson, and John L Lloyd, and Ji Jiang, and James Neels, and Prashantha Gunaga, and Abhisek Banerjee, and Naveen Dhondi, and Anjaneya Chimalakonda, and Sandhya Mandlekar, and Mary Lee Conder, and Harinath Sale, and Dezhi Xing, and Paul Levesque, and Ruth R Wexler
Departments of Discovery Chemistry, Biology, and Preclinical Candidate Optimization, Bristol-Myers Squibb, Research and Development , P.O. Box 5400, Princeton, New Jersey 08543-5400, United States.

A new series of phenylquinazoline inhibitors of Kv 1.5 is disclosed. The series was optimized for Kv 1.5 potency, selectivity versus hERG, pharmacokinetic exposure, and pharmacodynamic potency. 5-Phenyl-N-(pyridin-2-ylmethyl)-2-(pyrimidin-5-yl)quinazolin-4-amine (13k) was identified as a potent and ion channel selective inhibitor with robust efficacy in the preclinical rat ventricular effective refractory period (VERP) model and the rabbit atrial effective refractory period (AERP) model.

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