Patent ID: 7169927

Claim:
A compound of formula (1): wherein is a single bond; A is phenylene; n is 1; R 1 is hydrogen; R 2 is hydrogen; R 3 is selected from C 1-4 alkyl optionally substituted by 1 or 2 hydroxy groups provided that when there are 2 hydroxy groups they are not substituents on the same carbon, cyanoC 1-4 alkyl, and C 1-4 alkyl substituted by 1 or 2 R 8 groups provided that when there are 2 R 8 groups they are not substituents on the same carbon; R 8 is independently selected from hydroxy, heterocyclyl, C 1-4 alkanoyl, C 1-4 alkoxy, C 1-4 alkanesulfinyl, C 1-4 alkanesulfonyl, —COCOOR 9 , (R 9 )(R 10 )NCO—, —COCH 2 OR 11 , (R 9 )(R 10 )N—, —COOR 9 and 2,2-dimethyl-1,3-dioxolan-4-yl; R 9 and R 10 are independently selected from hydrogen, hydroxy, C 1-4 alkyl optionally substituted by 1 or 2 hydroxy groups provided that when there are 2 hydroxy groups they are not substituents on the same carbon and C 1-4 alkyl substituted by C 1-4 alkoxy and wherein R 9 and R 10 can together with the nitrogen to which they are attached form 4- to 6-membered ring where the ring is optionally substituted on carbon by 1 or 2 substituents selected from hydroxy or carboxy; R 11 is selected from hydrogen, C 1-4 alkyl, C 1-4 alkoxy and hydroxyC 1-4 alkyl; m is 1; R 4 is chloro; or a pharmaceutically acceptable salt or prodrug thereof.