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1-isopentyl-7-(methylthio)-1H-pyrimido[4,5-d][1,3]oxazine-2,4-dione

1-benzyl-7-(methylthio)-1H-pyrimido[4,5-d][1,3]oxazine-2,4-dione

1-isopropyl-7-(methylthio)-1H-pyrimido[4,5-d][1,3]oxazine-2,4-dione

ethyl 1-allyl-4-hydroxy-7-methyl-2-oxo-1,2-dihydro-1,8-naphthyridine-3-carboxylate

ethyl 4-hydroxy-7-methyl-2-oxo-1-propyl-1,2-dihydro-1,8-naphthyridine-3-carboxylate

ethyl 1-benzyl-4-hydroxy-7-methyl-2-oxo-1,2-dihydro-1,8-naphthyridine-3-carboxylate

ethyl 4-hydroxy-1,7-dimethyl-2-oxo-1,2-dihydro-1,8-naphthyridine-3-carboxylate

ethyl 4-hydroxy-7-methyl-2-oxo-1,2-dihydro-1,8-naphthyridine-3-carboxylate

1-allyl-7-methyl-1H-pyrido[2,3-d][1,3]oxazine-2,4-dione

1-benzyl-7-methyl-1H-pyrido[2,3-d][1,3]oxazine-2,4-dione

1,7-dimethyl-1H-pyrido[2,3-d][1,3]oxazine-2,4-dione

7-methyl-1H-pyrido[2,3-d][1,3]oxazine-2,4-dione

ethyl 4-hydroxy-1-isopentyl-2-oxo-1,2-dihydro-1,8-naphthyridine-3-carboxylate

ethyl 1-allyl-4-hydroxy-2-oxo-1,2-dihydro-1,8-naphthyridine-3-carboxylate

ethyl 1-benzyl-4-hydroxy-2-oxo-1,2-dihydro-1,8-naphthyridine-3-carboxylate

ethyl 4-hydroxy-2-oxo-1-phenyl-1,2-dihydro-1,8-naphthyridine-3-carboxylate

ethyl 4-hydroxy-1-methyl-2-oxo-1,2-dihydro-1,8-naphthyridine-3-carboxylate

ethyl 4-hydroxy-2-oxo-1,2-dihydro-1,8-naphthyridine-3-carboxylate

1-(prop-2-ynyl)-1H-pyrido[2,3-d][1,3]oxazine-2,4-dione

1-isopentyl-1H-pyrido[2,3-d][1,3]oxazine-2,4-dione

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