2-Phenyl-9H-purine-6-carbonitrile derivatives as selective cathepsin S inhibitors
摘要:
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. (C) 2010 Elsevier Ltd. All rights reserved.
The invention relates to 4-phenyl-pyrimidine-2-carbonitrile derivatives having the general formula (I) or a pharmaceutically acceptable salt thereof. The invention also relates to pharmaceutical compositions comprising said derivatives as well as to the use thereof in the preparation of a medicament suitable for the treatment of osteoporosis, atherosclerosis, inflammation and immune disorders, such as rheumatoid arthritis, and chronic pain, such as neuropathic pain.
The invention relates to 4-phenyl-pyrimidine-2-carbonitrile derivatives having the general formula I
wherein each of the substituents is given the definition as set forth in the specification and claims, or a pharmaceutically acceptable salt thereof. The invention also relates to pharmaceutical compositions comprising the derivatives as well as to the use thereof in the treatment of osteoporosis, atherosclerosis, inflammation and immune disorders, such as rheumatoid arthritis, and chronic pain, such as neuropathic pain.
Morphing structural features of HTS-derived chemotypes led to the discovery of novel 2-cyano-pyrimidine inhibitors of cathepsin K with good pharmacokinetic profiles, for example, compound 20 showed high catK potency (IC(50) = 4 nM), >580-fold selectivity over catL and catB, and oral bioavailability in the rat of 52%. (C) 2010 Elsevier Ltd. All rights reserved.