SEARCH Articles Figures Tables 2- Hydroxy-3- 4-[ phenyl 2-hydroxy pyrimidine 3- -2-hydroxy-4//-pyrido 3- -4//-pyrido pyrimidine 3- Phenyl-2-hydroxy-4//-pyrido 3- pyrimidin-4-one 5- Phenyl-2-[2- pyrimidine Pyrido 4-ones Pyrimidine-4 -ones