Patent ID: 8895776

Claim:
A compound selected from compounds of Formula (XIIIa) and pharmaceutically acceptable salts, solvates and hydrates thereof: wherein: R 1 and R 2 are each independently selected from: H, C 1 -C 6 alkyl, aryl and heteroaryl; wherein C 1 -C 6 alkyl, aryl and heteroaryl are each optionally substituted with one or two substituents selected from: C 1 -C 6 alkoxy, C 1 -C 6 alkyl, aryl, C 1 -C 6 haloalkoxy, C 1 -C 6 haloalkyl and halogen; X is O or NR 3 ; R 3 is selected from H and C 1 -C 6 alkyl; and Q is selected from: OH, —NHCH 2 CH 2 SO 3 H, 1-carboxyethylamino, 1-carboxy-4-guanidinobutylamino, 3-amino-1-carboxy-3-oxopropylamino, 1,2-dicarboxyethylamino, 1-carboxy-2-mercaptoethylamino, 4-amino-1-carboxy-4-oxobutylamino, 3-carboxy-1-carboxylatopropylamino, carboxymethylamino, 1-carboxy-2-(1H-imidazol-4-yl)ethylamino, 1-carboxy-2-methylbutylamino, 1-carboxy-3-methylbutylamino, 5-amino-1-carboxypentylamino, 1-carboxy-3-(methylthio)propylamino, 1-carboxy-2-phenylethylamino, 2-carboxypyrrolidin-1-yl, 1-carboxy-2-hydroxyethylamino, 1-carboxy-2-hydroxypropylamino, 1-carboxy-2-(1H-indol-3-yl)ethylamino, 1-carboxy-2-(4-hydroxyphenyl)ethylamino and 1-carboxy-2-methylpropylamino.