Patent ID: 8513214

Claim:
A compound of Formula (I), or pharmaceutically acceptable salt, solvate or hydrate thereof: wherein, R is ethyl; R 1 is H, C 1 -C 12 alkyl, C 3 -C 12 aryl, C 3 -C 12 heteroaryl, C 4 -C 12 aralkyl, C 4 -C 12 heteroaralkyl, NR a R b , or OR b , each of which is optionally substituted; R 2 is NR a R b , OR b , or S(O) n R b ; R a , for each occurrence, is independently H, an optionally substituted C 1-6 alkyl, an optionally substituted C 4-12 aralkyl, an optionally substituted C 3-12 cycloalkyl, an optionally substituted C 3-12 heterocycloalkyl, an optionally substituted C 3-12 aryl, or an optionally substituted C 3-12 heteroaryl; R b , for each occurrence, is independently, H, an optionally substituted C 1-6 alkyl, an optionally substituted C 4-12 aralkyl, an optionally substituted C 3-12 cycloalkyl, an optionally substituted C 3-12 heterocycloalkyl, an optionally substituted C 3-12 aryl, an optionally substituted C 3-12 heteroaryl, C 1-6 haloalkyl, or C 1-6 hydroxyalkyl; and n is 0-2.