Patent ID: 8829034

Claim:
A compound of the formula (I): wherein R 1 is methyl, ethyl, propyl, butyl, pentyl, hexyl, heptyl, octyl, nonyl or decyl, each substituted with tetrahydrofuranyl, tetrahydropyranyl or pyrrolidinyl or R 1 is tetrahydropyranyl optionally substituted with cyano, fluoro, chloro or bromo; R 2 and R 3 are independently hydrogen, methyl, ethyl, n-propyl, isopropyl, isobutyl, tert-butyl, wherein R 2 and R 3 cannot simultaneously be hydrogen, or R 2 and R 3 together with the carbon to which they are attached form a cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl or tetrahydropyranyl ring; R 4 is hydrogen; R 5 is phenyl, naphthyl, pyridinyl, quinolinyl, isoquinolinyl, pyrrolyl, pyrazolyl, imidazolyl, oxazolyl, isoxazolyl, thiazolyl, isothiazolyl, triazolyl, oxadiazolyl, thiadiazolyl, indolyl, benzoxazolyl, benzopyrazolyl, benzoisoxazolyl, benzothiazolyl, benzoisothiazolyl, benzimidazolyl, tetrahydrobenzoxazolyl, tetrahydrobenzothiazolyl or tetrahydrobenzimidazolyl each optionally independently substituted with 1 to 3 substituents chosen from C 1 -C 6 alkyl optionally substituted with 1 to 3 halogen atoms, C 3 -C 6 cycloalkyl, halogen, cyano, dimethylaminoC 1 -C 4 alkyl and phenyl optionally substituted with 1 to 2 halogen atoms or C 1 -C 4 alkyl optionally substituted with halogen; or a tautomer or pharmaceutically acceptable salt thereof.