SEARCH Articles Figures Tables 2- Hydroxy-3-methyl-4//-pyrido 2- Hydroxy-3-substituted-4//-pyrido 2- Methyl-8-nitro-9-hydroxy-4//pyrido pyrimidin-4-ones 2-Hydroxy-4-oxo-47/-pyrido 3- Amino-2-hydroxy-47/-pyrido 3- Amino-2-hydroxy-47/-pyrido pyrimidin-4-ones 3- Chloro-2-hydroxy-4//-pyrido 3- Chloro-2-hydroxy-4//-pyrido pyrimidin-4-one 3- Formyl-2-hydroxy-8- -4/7-pyrido 3- Nitro-9-hydroxy-4//-pyrido 3- Phenyl-2-hydroxy-4//-pyrido 3- Phenyl-2-hydroxy-4//-pyrido pyrimidin-4-one 3-Acetyl-2-hydroxy-4//-pyrido 3-Cyano-9-hydroxy-4/7-pyrido 3-Hydroxy-3,4-dihydro-27/-pyrido 3-Hydroxy-3,4-dihydro-2H-pyrido 6-Hydroxy-4-imino-4//-pyrido 6-Hydroxy-4-imino-4//-pyrido pyrimidine 9- Hydroxy-2-methyl-3- 2- ethyl 6,7,8,9-tetrahydro-4//-pyrido 9-Benzyl-2-hydroxy-4//-pyrido 9-Hydroxy-2,3-dimethyl-477-pyrido 9-Hydroxy-2-methyl-4//-pyrido Mannich reaction 9-Hydroxy-2-methyl-4//-pyrido alkylation 9-Hydroxy-2-methyl-4//-pyrido chloride 9-Hydroxy-2-methyl-8-nitro-4//-pyrido 9-Hydroxy-6,7,8,9-tetrahydro-4//-pyrido Alkyl 2-hydroxy-4-oxo-4//-pyrido Ethyl 9-hydroxy-4-oxo-4//-pyrido Pyrido pyrazine-7-carboxylates 8-hydroxy Pyrido pyrimidine-6-carboxylates 5- hydroxy Pyrido quinoxaline-9-carboxylate 10-hydroxy