A compound of formula (I) ** Formula ** in which X represents a ring carbon atom or a ring nitrogen atom； - R1 represents - (C2-6) alkyl； - (C2-4) alkyl mono-substituted with cyano, or (C1-3) alkoxy； - fluoroalkyl (C1-4)； - fluoroalkoxy (C1-3)； - pentafluoro sulfanyl； - (C3-6) -L1- cycloalkyl in which - said (C3-6) cycloalkyl optionally contains a ring oxygen atom； wherein said (C3-6) cycloalkyl is not substituted； or is mono-substituted with fluorine, (C1-3) alkyl, (C1-3) alkoxy, hydroxy, cyano, or (C1-3) fluoroalkyl； or is di-substituted with fluorine, or tri-substituted with two fluorine substituents and a (C 1-3) alkyl substituent； and - the L1 linker represents a direct bond, (C1-2) alkylene, oxygen, or (C1-2) -oxy alkylene； - 5- or 6-membered heteroaryl, independently and optionally mono-substituted with (C1-3) alkyl； - -NR11R12, in which - R11 and R12 independently represent hydrogen, (C1-3) alkyl, fluoroalkyl (C2-3), cycloalkyl (C3-6), cycloalkyl (C3-6) mono- or di-substituted by fluorine , (C3-6) cycloalkyl (C1-3) alkyl, (C1-3) alkoxy-(C2-3) alkyl； - or R11 and R12, together with the nitrogen atom to which they are attached, form a 4- to 6-membered ring which is optionally mono- or di-substituted with fluorine； a 2-oxo-pyrrolidinyl group； or a morpholinyl group； and (R4) n represents one or two optional substituents independently selected from (C1-4) alkyl, (C1-4) alkoxy, fluoroalkyl (C1-3), fluoroalkoxy (C1-3), halogen, and cyano； - or R1 together with (R4) n forms a 5 or 6 membered non-aromatic ring that is fused to the phenyl / pyridine ring； wherein said 5 or 6 member ring optionally contains one or two heteroatoms independently selected from oxygen and nitrogen； wherein said non-aromatic ring of 5 or 6 members independently is optionally and additionally mono-substituted with oxo； or di-, tri-, or tetra-substituted with one of the substituents is oxo and the rest are (C1-3) alkyl； - or R1 together with (R4) n forms a 5 or 6 membered aromatic ring that
