Patent ID: 7223749

Claim:
A bicyclic heterocycle of formula wherein R a denotes a hydrogen atom or a C 1-4 -alkyl group, R b denotes a phenyl, benzyl or 1-phenylethyl group, wherein the phenyl nucleus in each case is substituted by the groups R 1 to R 3 , wherein R 1 and R 2 may be identical or different and denote a hydrogen, fluorine, chlorine, bromine or iodine atom, a C 1-4 -alkyl, hydroxy, C 1-4 -alkoxy, C 2-3 -alkenyl or C 2-3 -alkynyl group, an aryl, aryloxy, arylmethyl or arylmethoxy group, a heteroaryl, heteroaryloxy, heteroarylmethyl or heteroarylmethoxy group, a methyl or methoxy group substituted by 1 to 3 fluorine atoms or a pyrrolidin-3-yloxy, piperidin-3-yloxy or piperidin-4-yloxy group, a 1-(C 1-3 -alkyl)-pyrrolidin-3-yloxy, 1-(C 1-3 -alkyl)-piperidin-3-yloxy or 1-(C 1-3 -alkyl)-piperidin-4-yloxy group, a C 1-4 -alkoxy group which is substituted by a pyrrolidinyl, piperidinyl or homopiperidinyl group substituted in the 1 position by the group R 5 , wherein R 5 denotes a hydrogen atom or a C 1-3 -alkyl group, or a C 1-4 -alkoxy group which is substituted by a morpholinyl or homomorpholinyl group substituted in the 4 position by the group R 5 , wherein R 5 is as hereinbefore defined, R e and R d may be identical or different, and denote a hydrogen atom or a C 1-3 -alkyl group and X denotes a methyne group substituted by a cyano group or a nitrogen atom, wherein the aryl groups of the above R groups is a phenyl group which is mono- or disubstituted by the group R 6 , wherein R 6 may be identical or different and denote a hydrogen, fluorine, chlorine, bromine or iodine atom or a C 1-3 -alkyl, hydroxy, C 1-3 -alkyloxy, difluoromethyl, trifluoromethyl, difluoromethoxy, trifluoromethoxy or cyano group, wherein the heteroaryl groups of the above R groups is a pyridinyl, pyridazinyl, pyrimidinyl or pyrazinyl group, which is mono- or disubstituted by the group R 6 wherein R 6 is as hereinbefore defined, and a tautomer, stereoisomer, a mixture thereof or a salt thereof.