Patent ID: 6958347

Claim:
A compound of Formula (I) wherein R 1 is hydrogen or (C 1 -C 4 )alkyl; R 2 is hydrogen, —C(O)R 2a , —C(O)—(CH 2 ) n —R 2b , or —(CH 2 ) m —R 2c , where n is 0, 1 or 2, m is 0, 1, 2 or 3, R 2a is (C 1 -C 4 )alkyl or halo-substituted (C 1 -C 4 )alkyl, and R 2b and R 2c are —NH(C 1 -C 4 )alkyl, —N((C 1 -C 4 )alkyl) 2 , pyridinyl, hydroxy(C 1 -C 4 )alkyl, phenyl, or piperidinyl; R 3 is (C 1 -C 6 )alkyl; and X is carbonyl or methylene; a pharmaceutically acceptable salt thereof, a prodrug of said compound or said salt, or a solvate or hydrate of said compound, said salt or said prodrug.