FUSED DIHYDROPYRIDO [2,3 -B] PYRAZINES AS IP RECEPTOR AGONISTS FOR THE TREATMENT OF PULMONARY ARTERIAL HYPERTENSION (PAH) AND RELATED DISORDERS

摘要

The present invention provides heterocyclic derivatives which activate the IP receptor, processes for preparing them, pharmaceutical compositions comprising said derivatives and uses thereof. Activating the IP receptor signaling pathway is useful to treat many forms of PAH, pulmonary fibrosis and exert beneficial effects in fibrotic conditions of various organs in animal models and in patients. Formula (I):