Patent ID: 7399769

Claim:
An aryl-isoxazol-4-yl-imidazo[1,5-a]pyridine derivative of formula I: wherein: R 1 is hydrogen, halogen, hydroxy, lower alkyl, benzyloxy or —O—(CH 2 )—(CO)-5 or 6 membered heteroaryl optionally substituted by aryl or lower alkyl; R 2 is hydrogen, lower alkyl, or —(CO)—R a ; R 3 is hydrogen, halogen, cyano, lower alkyl, or —(CO)—R a ; R a is hydroxy, lower alkoxy, NR′R″, wherein R′ and R″ are each independently hydrogen, cycloalkyl, 5 or 6-membered heterocycloalkyl or is lower alkyl which is optionally substituted by cycloalkyl, cyano, 5 or 6-membered heterocycloalkyl or by 5 or 6-membered heteroaryl; and pharmaceutically acceptable acid addition salts thereof.