The present invention is directed to novel pyrido[4,3-d]pyrimidin-4(3H)-one derivatives and pharmaceutically acceptable salts thereof of structural formula I
wherein the variables R1, R2, R3, R4 and R5 are as described herein. Also provided are pharmaceutical compositions comprising the compounds of formula I as well as methods of treatment employing compounds of formula I to treat a disease or disorder characterized by abnormal bone or mineral homeostasis such as hypoparathyroidism, osteoporosis, osteopenia, periodontal disease, Paget's disease, bone fracture, osteoarthritis, rheumatoid arthritis, and humoral hypercalcemia of malignancy.
本发明涉及新型
吡啶并[4,3-d]
嘧啶-4(3H)-酮衍
生物及其结构式I中的药物可接受的盐,其中变量R1、R2、R3、R4和R5如本文所述。还提供了包含式I化合物的制药组合物,以及使用式I化合物治疗异常骨骼或矿物质稳态的疾病或障碍的治疗方法,例如甲状旁腺功能减退症、骨质疏松症、骨质疏松、牙周病、帕吉特病、骨折、骨关节炎、类风湿性关节炎和恶性体液高
钙血症。