Patent ID: 7825096

Claim:
A compound of the formula (I): wherein R is amino C 1 -C 6 alkyl; R 1 is selected from the group consisting of hydrogen, halo, C 1 -C 4 alkyl, C 1 -C 4 hydroxyalkyl, thiol, C 1 -C 4 alkylthio, trifluoromethylthio, C 1 -C 4 thioacyl, hydroxy, C 1 -C 4 alkoxy, trifluoromethoxy, methanesulfonyloxy, trifluoromethanesulfonyloxy, C 1 -C 4 acyloxy, amino, C 1 -C 4 aminoalkyl, C 1 -C 4 alkylamino, C 1 -C 4 dialkylamino, trifluoromethylamino, ditrifluoromethylamino, aminomethanesulfonyl, C 1 -C 4 aminoacyl, aminotrifluoromethylcarbonyl, formylamino, nitro, nitroso, C 1 -C 4 alkyldiazo, C 5 -C 6 aryldiazo, trifluoromethyl, C 1 -C 4 haloalkyl, halomethyl, C 1 -C 4 cyanoalkyl, cyanomethyl, cyano, C 1 -C 4 alkyloxycarbonyl, C 1 -C 4 alkylcarbonyl, phenyl, phenylcarbonyl, formyl, C 1 -C 4 alkoxymethyl, phenoxymethyl, C 2 -C 4 vinyl, C 2 -C 4 ethynyl, and SO n R′ wherein n is 0, 1, 2, or 3 and R′ is hydrogen, C 1 -C 4 alkyl, amino, or phenyl; and R 3 is selected from the group consisting of hydrogen, C 1 -C 4 alkyl, C 1 -C 4 aminoalkyl, C 1 -C 4 hydroxyalkyl, C 1 -C 4 alkylaminoalkyl, C 1 -C 4 dialkylaminoalkyl, C 1 -C 4 cyanoalkyl, C 1 -C 4 carbamoylalkyl, C 1 -C 4 pivaloylalkyl, C 1 -C 6 alkylcarbonyloxy C 1 -C 4 alkyl, C 1 -C 4 alkoxycarbonylalkyl, ribose, 2′-deoxyribose, the conjugate acid form of a C 1 -C 4 carboxyalkyl, and the carboxylate anion of a C 1 -C 4 carboxyalkyl as the sodium salt; or a pharmaceutically acceptable salt thereof; with the proviso that when R 1 and R 3 are hydrogen, R cannot be ortho-aminoalkyl or para-aminoalkyl.