2-氨基-1-乙基-5H-咪唑-4-酮

5-naphthalen-1-yl-1H-imidazol-2-amine

3-(2-amino-7-oxo-4-phenyl-5H-pyrrolo[3,4-d]pyrimidin-6-yl)propanoic acid

3-[2-amino-4-(4-methoxyphenyl)-7-oxo-5H-pyrrolo[3,4-d]pyrimidin-6-yl]propanoic acid

3-[2-amino-4-(4-chlorophenyl)-7-oxo-5H-pyrrolo[3,4-d]pyrimidin-6-yl]propanoic acid