SEARCH Articles Figures Tables 3- -4//-pyrido pyrimidine 4-Aryl-2,3-dihydro-1 //-pyrido pyrimidine-1,3-diones Aryl-dione Pyrido -dione Pyrido diones Pyrido pyrimidine-4,7-diones Pyrimidin-2,4-dione Pyrimidine diones Pyrimidine-2,6-dione Pyrimidines arylation