Patent ID: 7790763

Claim:
A compound of formula IB, wherein R 1 is —OR 1′ , —SR 1′ or a heterocycloalkyl group selected from the group consisting of oxetanyl, tetrahydrofuranyl, tetrahydropyranyl, azetidinyl, pyrrolidinyl, piperidinyl, piperazinyl, morpholinyl, and thiomorpholinyl; R 1′ is lower alkyl, lower alkyl substituted by halogen, or —(CH 2 ) n -cycloalkyl; R 2 is —S(O) 2 -lower alkyl or —S(O) 2 NH-lower alkyl; R 3 is aryl or heteroaryl, each of which is unsubstituted or substituted by one to three substituents, selected from the group consisting of lower alkyl, lower alkoxy, CN, NO 2 , —C(O)-lower alkyl, —C(O)O-lower alkyl, halogen and lower alkyl substituted by halogen; and n is 1 or 2; or a pharmaceutically acceptable acid addition salt thereof.