Patent ID: 7939520

Claim:
A compound of formula I wherein R 1 is H, halogen, CN, COR 9 , OCO 2 R 10 , CO 2 R 11 , CONR 12 R 13 , SO p R 14 , NR 15 R 16 , OR 17 or a C 1 -C 6 alkyl, C 3 -C 7 cycloalkyl, aryl or heteroaryl group each optionally substituted; R 2 is an optionally substituted aryl, or optionally substituted heteroaryl group or an optionally substituted 8- to 13-membered bicyclic or tricyclic ring system having a N atom at the bridgehead and optionally containing 1, 2 or 3 additional heteroatoms selected from N, O or S; R 3 is H, C 1 -C 6 alkyl or C 3 -C 7 cycloalkyl; R 4 and R 5 are each independently H, C 1 -C 6 alkyl or C 3 -C 7 cycloalkyl or R 4 and R 5 may be taken together with the atom to which they are attached to form an optionally substituted 3- to 7-membered ring; m is an integer of 1, 2 or 3; n is 0 or an integer of 1, 2 or 3; p is 0 or an integer of 1 or 2; R 9 , R 10 , R 11 , and R 17 are each independently H or a C 1 -C 6 alkyl, C 2 -C 6 alkenyl, C 2 -C 6 alkynyl, C 3 -C 6 cycloalkyl, cycloheteroalkyl, aryl or heteroaryl group each optionally substituted; R 12 , R 13 , R 15 and R 16 are each independently H or an optionally substituted C 1 -C 4 alkyl group or R 12 and R 13 may be taken together with the atom to which they are attached to form a 5- to 7-membered ring optionally containing another heteroatom selected from O, NR 18 or SO p or R 15 and R 16 may be taken together with the atom to which they are attached to form a 5- to 7-membered ring optionally containing another heteroatom selected from O, NR 18 or SO p ; R 14 is a C 1 -C 6 alkyl, C 2 -C 6 alkenyl, C 2 -C 6 alkynyl, C 3 -C 6 cycloalkyl, cycloheteroalkyl, aryl or heteroaryl group each optionally substituted; and R 18 is H or a C 1 -C 6 alkyl, C 2 -C 6 alkenyl, C 2 -C 6 alkynyl, C 3 -C 7 cycloalkyl, cycloheteroalkyl, aryl or heteraryl group each optionally substituted; or a stereoisomer thereof or a pharmaceutically acceptable salt thereof.