N-{4-[3-butyl-1-(2-hydroxy-benzyl)-2,6-dioxo-2,3,6,7-tetrahydro-1H-purin-8-ylmethyl]-phenyl }-acetamide

2,2-dimethyl-propionic acid 8-(4-acetylamino-benzyl)-3-butyl-1-(2-fluoro-5-methoxy-benzyl)-2,6-dioxo-1,2,3,6-tetrahydro-purin-7-ylmethyl ester

2,2-dimethyl-propionic acid 8-(4-acetylamino-benzyl)-3-butyl-1-(2-fluoro-5-nitro-benzyl)-2,6-dioxo-1,2,3,6-tetrahydro-purin-7-ylmethyl ester

2,2-dimethyl-propionic acid 8-(4-acetylamino-benzyl)-3-butyl-2,6-dioxo-1,2,3,6-tetrahydro-purin-7-ylmethyl ester

3,7-dihydro-3-butyl-8-methyl-1H-purine-2,6-dione