Patent ID: 7795315

Claim:
A compound of formula (I), wherein: X is —N—; R 1 is hydrogen; R 2 is selected from the group consisting of: hydrogen; C 1-6 alkyl, which is unsubstituted or substituted by morpholino; —(CH 2 ) k -phenyl; —(CH 2 ) k -pyridinyl; —(CH 2 ) k -benzotriazolyl; —(CH 2 ) k -cyclohexyl; and —(CH 2 ) k -heterocyclyl, wherein said heterocyclyl is 6 membered and one or two ring atoms are, individually, oxygen, nitrogen or sulphur; and wherein all of the aforementioned cyclic groups are unsubstituted or one or two times substituted by halogen, cyano, trifluoromethyl, trifluoromethoxy, C 1-6 alkyl or C 3-6 cycloalkyl; and R 3 and R 4 are: each independently selected from the group consisting of: hydrogen; a 5 to 10 membered, mono- or bicyclic aryl, wherein the ring may be unsubstituted or one or two times substituted by hydroxyl, cyano, halogen, trifluoromethyl, trifluoromethoxy, cyclopropyl, C 1-4 alkyl, C 1-4 alkoxy, —N(C 1-4 alkyl) 2 or —NH(C 1-4 alkyl); a 5 to 10 membered, mono- or bicyclic heteroaryl wherein 1 or 2 ring atoms are, individually, oxygen, nitrogen or sulphur, and wherein the ring may be unsubstituted or one or two times substituted by hydroxyl, cyano, halogen, trifluoromethyl, trifluoromethoxy, cyclopropyl, C 1-4 alkyl, C 1-4 alkoxy, —N(C 1-4 alkyl) 2 or —NH(C 1-4 alkyl); a C 3-8 cycloalkyl; and a C 1-6 alkyl which is unsubstituted or substituted by —OH; —O—C 1-6 alkyl; —N(C 1-6 alkyl) 2 ; —NH(C 1-6 alkyl); —N—C(O)—C 1-6 alkyl; —C(O)-morpholino; —C(O)—C 1-6 alkyl; a 5 to 10 membered, mono- or bicyclic aryl which is optionally substituted with methyl or —C(O)—CH 3 ; a 15 to 10 membered, mono- or bicyclic heteroaryl wherein 1, 2 or 3 ring atoms are, individually, oxygen, nitrogen or sulphur, and which is optionally substituted with methyl or —C(O)—CH 3 ; a 3 to 8 membered, mono- or bicyclic cycloalkyl which is optionally substituted with methyl or —C(O)—CH 3 ; or a 3 to 8 membered, mono- or bicyclic heterocyclyl wherein 1, 2 or 3 ring atoms are, individually, oxygen, nitrogen or sulphur, and which is optionally substituted with methyl or —C(O)—CH 3 ; or R 3 and R 4 , together with the nitrogen atom to which they are attached, form a 4- to 6-membered heterocyclyl wherein one ring atom, other than X, may be oxygen or nitrogen; R 5 and R 6 are each hydrogen; and k is 0, 1, 2 or 3; or a pharmaceutically acceptable salt thereof.