Pyrrolo [2,3-D] pyrimidine compounds

摘要

A compound of the formula wherein R¹, R² and R³ are as defined above, which are inhibitors of the enzyme protein tyrosine kinases such as Janus Kinase 3 and as such are useful therapy as immunosuppressive agents for organ transplants, lupus, multiple sclerosis, rheumatoid arthritis, psoriasis, Type I diabetes and complications from diabetes, cancer, asthma, atopic dermatitis, autoimmune thyroid disorders, ulcerative colitis, Crohn's disease, Alzheimer's disease, Leukemia and other autoimmune diseases.