Patent ID: 7615635
Filing Date: 2009-11-10
Classification: A61P,C07D

Abstract:
1. A compound of formula (I) wherein R1 is hydrogen, alkyl, heteroalkyl, heterocycloalkyl, aryl, heteroaryl, or cycloalkyl; R3 is hydrogen, halogen, or alkoxy; R4 is a heteroaryl of formula (II.2) wherein R6, R7 and R8 are hydrogen; or R6 and R8 are hydrogen and R7 is alkyl, substituted alkyl or phenyl; or R6 and R7 are hydrogen and R8 is halogen, alkyl or substituted alkyl; or R7 and R8 are hydrogen and R6 is hydroxyl; and n is 0 to 3 and wherein one or more of the nitrogens of the pyrazinyl ring is optionally oxidized or a salt thereof or a prodrug thereof.