Therapeutically active compounds based on indazole bioisostere replacement of catechol in PDE4 inhibitors

摘要

This application is directed to therapeutically active compositions of matter are useful for treating or preventing inflammatory bowel disease and conditions including joint inflammation, Crohn's disease and inflammatory bowel disease; respiratory diseases such as chronic obstructive pulmonary disease (COPD) including asthma, chronic bronchitis, and pulmonary emphysema; infectious diseases including endotoxic shock and toxic shock syndrome; immune diseases including systemic lupus erythematosis and psoriasis; and other diseases including bone resorption diseases and reperfusion injury; wherein said composition of matter comprises a compound which is an inhibitor of phosphodiesterase isozyme 4 (PDE4) and wherein an indazole is one essential component of said compound's overall chemical structure, and wherein said indazole constitutes a bioisosteric replacement of a catechol component or functional derivative thereof in a known compound having the same said therapeutic activity and the same remaining said components of its overall chemical structure. Included are compounds of Formula (IA) or (IB): ;wherein the variable are defined as set forth in the specification.