1. Merck Research Laboratories, MSD, Newhouse, Lanarkshire ML1 5SH, UK;2. Merck Research Laboratories, MSD, 5340BH Oss, The Netherlands;3. Cerep, 19 Avenue du Quebec, 91951 Courtaboeuf Cedex, France
Abstract:
Starting from previously disclosed equally potent cathepsin K and S inhibitor 4-propyl-6-(3-trifluoromethylphenyl)pyrimidine-2-carbonitrile 1, a novel 2-phenyl-9H-purine-6-carbonitrile scaffold was identified to provide potent and selective cathepsin S inhibitors.