3,9-二氢-1,3-二丙基-1H-嘌呤-2,6-二酮

1,3-dipropyl-8-[(E)-2-(2,3,4-trimethoxyphenyl)ethenyl]-7H-purine-2,6-dione

1,3-dipropyl-8-[(E)-2-(3,4,5-trimethoxyphenyl)ethenyl]-7H-purine-2,6-dione

8-[(E)-2-(3,4-dimethoxyphenyl)ethenyl]-7-methyl-1,3-dipropylpurine-2,6-dione

8-[(E)-2-(2,4-dimethoxyphenyl)ethenyl]-1,3-dipropyl-7H-purine-2,6-dione