A compound of formula wherein R 1 represents hydrogen, alkoxy, halogen or cyano; one or two of U, V, W, and X represent(s) N and the remaining each represent CH, or, in the case of X, represent CR a; R a represents hydrogen or halogen; R 6 represents hydrogen or (C 1 -C 4)alkyl; A represents N; ▪ B represents N; D represents a bond; E represents CH 2 or *-COCH 2 - wherein the asterisk indicates the bond which is attached to B; R 2, R 3, R 4 and R 5 each represent H; and m and n each represent the integer 1; or ▪ B represents C, D represents a bond, E represents CH 2, R 2, R 3, R 4 and R 5 each represent H, and m and n each represent the integer 1; or ▪ B represents CH, D represents NR b, E represents CH 2, R 2, R 3, R 4 and R 5 each represent H, R b represents H or (C 1 -C 4)alkyl, and m and n each represent the integer 1; or ▪ B represents CH, D represents NH, E represents CH 2, R 2, R 3, R 4 and R 5 each represent H, m represents the integer 2, and n represents the integer 0; G represents phenyl which is unsubstituted, mono-substituted in position 3 or 4, or disubstituted in positions 3 and 4, wherein each substituent is independently selected from the group consisting of (C 1 -C 4)alkyl, (C 1 -C 4)alkoxy, fluoroalkyl, fluoroalkoxy, cyano, halogen and -NR N1 R N2; or G represents pyridin-2-yl which is mono-substituted in position 5, wherein the substituent is selected from the group consisting of (C 1 -C 4)alkyl and fluoroalkyl; or G represents 6,7-dihydro-[1,4]dioxino[2,3-c]pyridazin-3-yl; or G represents a group selected from the group consisting of: wherein R h represents hydrogen or fluorine; M represents CH or N; and Q and Q' independently represent O or S; and R N1 and R N2 independently represent (C 1 -C 4)alkyl, or together with the nitrogen that carries them form a pyrrolidine ring; or a salt of such a compound. R 1 represents hydrogen, alkoxy, halogen or cyano; one or two of U, V, W, and X represent(s) N and the remaining each represent CH, or, in the case of X, represent CR a; R a represents hydrogen or halogen; R 6 represents hydrogen or (C 1 -C 4)alkyl; A represents N; ▪ B represents N; D represents a bond; E represents CH 2 or *-COCH 2 - wherein the asterisk indicates the bond which is attached to B; R 2, R 3, R 4 and R 5 each represent H; and m and n each represent the integer 1; or ▪ B represents C, D represents a bond, E represents CH 2, R 2, R 3, R 4 and R 5 each represent H, and m and n each represent the integer 1; or ▪ B represents CH, D represents NR b, E represents CH 2, R 2, R 3, R 4 and R 5 each represent H, R b represents H or (C 1 -C 4)alkyl, and m and n each represent the integer 1; or ▪ B represents CH, D represents NH, E represents CH 2, R 2, R 3, R 4 and R 5 each represent H, m represents the integer 2, and n represents the integer 0; ▪ B represents N; D represents a bond; E represents CH 2 or *-COCH 2 - wherein the asterisk indicates the bond which is attached to B; R 2, R 3, R 4 and R 5 each represent H; and m and n each represent the integer 1; or ▪ B represents C, D represents a bond, E represents CH 2, R 2, R 3, R 4 and R 5 each represent H, and m and n each represent the integer 1; or ▪ B represents CH, D represents NR b, E represents CH 2, R 2, R 3, R 4 and R 5 each represent H, R b represents H or (C 1 -C 4)alkyl, and m and n each represent the integer 1; or ▪ B represents CH, D represents NH, E represents CH 2, R 2, R 3, R 4 and R 5 each represent H, m represents the integer 2, and n represents the integer 0; G represents phenyl which is unsubstituted, mono-substituted in position 3 or 4, or disubstituted in positions 3 and 4, wherein each substituent is independently selected from the group consisting of (C 1 -C 4)alkyl, (C 1 -C 4)alkoxy, fluoroalkyl, fluoroalkoxy, cyano, halogen and -NR N1 R N2; or G represents pyridin-2-yl which is mono-substituted in position 5, wherein the substituent is selected from the group consisting of (C 1 -C 4)alkyl and fluoroalkyl; or G represents 6,7-dihydro-[1,4]dioxino[2,3-c]pyridazin-3-yl; or G represents a group selected from the group consisting of: wherein R h represents hydrogen or fluorine; M represents CH or N; and Q and Q' independently represent O or S; and R N1 and R N2 independently represent (C 1 -C 4)alkyl, or together with the nitrogen that carries them form a pyrrolidine ring; or a salt of such a compound. R h represents hydrogen or fluorine; M represents CH or N; and Q and Q' independently represent O or S; and R N1 and R N2 independently represent (C 1 -C 4)alkyl, or together with the nitrogen that carries them form a pyrrolidine ring;