Patent ID: 8703792

Claim:
A compound of Formula I: wherein: R 1 is selected from CH 2 NR 2 R 3 , CH 2 OR 2 , CH 2 OC(O)NR 2 R 3 , CH 2 NHC(O)R 2 , CH 2 NHC(O)OR 2 , CH 2 CHC(O)NR 2 R 3 , and CH 2 OC(O)R 2 ; and R 2 and R 3 are independently selected from H, C 1-6 alkyl, C 2-6 alkenyl, C 3-10 cycloalkyl and C 6-10 aryl said latter four groups being unsubstituted or substituted with one to 5 groups independently selected from halo, OH, OC 1-4 alkyl, OC(O)C 1-6 alkyl and nitro; R 4 is selected from C 1-6 alkyl, C 2-6 alkenyl, C 3-10 cycloalkyl and C 6-10 aryl said latter four groups being unsubstituted or substituted with one to 5 groups independently selected from halo, OH, OC 1-4 alkyl, OC(O)C 1-6 alkyl and nitro; and R 5 is selected from H and OH; and in each alkyl, alkenyl, cycloalkyl and aryl, one or more available H are optionally replaced with F, or a pharmaceutically acceptable salt, solvate or prodrug thereof.