Patent ID: 7709483

Claim:
A compound of formula (I) or a pharmaceutically acceptable salt thereof: wherein: R 1a is selected from the group consisting of hydrogen; halo; cyano; (C 1-6 )alkoxy, and (C 1-6 )alkyl; R 2 is hydrogen, or (C 1-4 )alkyl; A is a group (ia): in which: R 3 is hydrogen, halogen, C 1-6 alkyl, or hydroxy; U is CO or CH 2 and R 5 is selected from the group consisting of: 3-oxo-3,4-dihydro-2H-pyrido[3,2-b][1,4]oxazin-6-yl; 2,3-dihydrofuro[2,3-c]pyridin-5-yl; 6,7-Dihydro[1,4]dioxino[2,3-c]pyridazin-3-yl; 6,7-dihydro[1,4]oxathiino[2,3-c]pyridazin-3-yl; 2,3-dihydro-[1,4]dioxino[2,3-c]pyridin-7-yl; and [1,3]oxathiolo[5,4-c]pyridin-6-yl; and R 9 is hydrogen or hydroxy.