ACETAMIDE AND UREA DERIVATIVES, PROCESS FOR THEIR PREPARATION AND THEIR USE IN THE TREATMENT OF CNS DISORDERS

摘要

Compounds of formula (I), processes for their preparation and their use as CNS agents are disclosed, in which R is a group of formula (i), in which P<1> is phenyl, bicyclic aryl, a 5- to 7-membered heterocyclic ring containing 1 to 3 heteroatoms selected from oxygen, nitrogen and sulphur, or a bicyclic heterocyclic ring containing 1 to 3 heteroatoms selected from oxygen, nitrogen and sulphur; or R is a group of formula (ii); L is a group of formula -Y-C(=V)-DG-, in which Y is -NH-, NR<5> where R<5> is C1-6alkyl, or Y is -CH2- or -O-; V is oxygen or sulphur; D is nitrogen, carbon or a CH group, G is hydrogen or C1-6alkyl providing that D is nitrogen or a CH group, or G together with R forms a group W where W is (CR<16>R<17>)t where t is 2, 3 or 4 and R<16> and R<17> are independently hydrogen or C1-6alkyl or W is (CR<16>R<17>)u-J where u is 0, 1, 2 or 3 and J is oxygen, sulphur, CR<16>=CR<17>, CR<16>=N, =CR<16>O, =CR<16>S or =CR<16>-NR<17>; B is CH2, oxygen, S(O)p where p is 0, 1 or 2, NR<6> where R6 is hydrogen or C1-6alkyl or B is CR<7>=CR<8> where R<7> and R<8> are independently hydrogen or C1-6alkyl; R and R are independently hydrogen or C1-6alkyl; R is a 5- to 7-membered heterocyclic ring containing 1 to 3 heteroatoms selected from oxygen, nitrogen and sulphur, or R is a group of formula -NRR in which R and R are independently hydrogen, C1-6alkyl or aralkyl; R and R are independently hydrogen, halogen, hydroxy, C1-6alkyl, trifluoromethyl, C1-6alkoxy or aryl, or R together with G forms a group W as defined above; and n is 0, 1, 2, 3 or 4.