8-Benzyloxy-2-methyl-imidazo[1,2-a]pyridine-3-carboxylic acid ethyl ester
5-(Pyridin-2-yl)pyridin-2(1H)-one
Dimethyl3-(benzyloxy)-1-(2,2-dimethoxyethyl)-4-oxo-1,4-dihydropyridine-2,5-dicarboxylate
1-(2,2-Dimethoxyethyl)-5-methoxy-6-(methoxycarbonyl)-4-oxo-1,4-dihydropyridine-3-carboxylic acid