Patent ID: 8329698

Claim:
A compound selected from the group consisting of: acetic acid 2,3-dioxo-1,2,3,4-tetrahydro-quinoxalin-5-yl ester, 5-hydroxy-4-methyl-1,4-dihydroquinoxaline-2,3-dione, 5-hydroxy-1,4-dimethyl-1,4-dihydroquinoxaline-2,3-dione, 1,4-dimethyl-5-methoxy-1,4-dihydroquinoxaline-2,3-dione, 2,2-dimethyl-propionic acid 2,3-dioxo-1,2,3,4-tetrahydro-quinoxalin-5-yl ester, 8-methoxy-1-methyl-1,4-dihydro-quinoxaline-2,3-dione, 4,6-dihydro-1H-pyrido[3,4-b]pyrazine-2,3,5-trione, 8-hydroxy-1,4-dihydro-pyrido[2,3-b]pyrazine-2,3-dione, 5-methoxy-1-methyl-1,4-dihydroquinoxaline-2,3-dione, 5-hydroxy-1-methyl-1,4-dihydroquinoxaline-2,3-dione, 5-(2-hydroxy-ethoxy)-1,4-dihydro-quinoxaline-2,3-dione, and pharmaceutically usable salts and stereoisomers thereof, including mixtures thereof in all ratios.