Patent ID: 8691823

Claim:
A compound of formula (I): wherein: R 1 is C 1 -C 8 alkyl or LR 2 ; L is alkylene; R 2 is a) hydroxy; b) alkoxy; c) OR 3 wherein R 3 is P(O)(OH) 2 or alkoxy; d) heterocyclyl optionally substituted with oxo or C 1 -C 8 alkyl; e) C(O)OR 4 wherein R 4 is H, C 1 -C 8 alkyl, or XR 5 wherein X is alkylene and R 5 is C 6 -C 10 aryl, heterocyclyl, or NR 6 R 7 wherein R 6 and R 7 are independently selected from the group consisting of H and C 1 -C 8 alkyl; f) NR 6 R 7 ; g) C(O)NR 8 R 9 wherein R 8 and R 9 are independently selected from the group consisting of H and XR 5 ; or h) C(O)R 10 wherein R 10 is heterocyclyl optionally substituted with XR 11 wherein R 11 is heterocyclyl; or a pharmaceutically acceptable salt thereof.