8-苯基茶碱

2-phenyl-1,4,5,6-tetrahydropyrimidin-6-ol

2-phenyl-1H-pyrido[2,3-d]pyrimidin-4-one

1,4-二氢-6-(甲硫基)-4-氧代-2-苯基-5-嘧啶甲腈

2,6-diphenyl-1H-pyrimidin-4-one