6-(2,2-Dimethyl-propionyloxy)-2-ethynyl-4-hydroxymethyl-2H-quinoline-1-carboxylic acid phenyl ester

4-(tert-Butyl-dimethyl-silanyloxymethyl)-6-(2,2-dimethyl-propionyloxy)-2-ethynyl-2H-quinoline-1-carboxylic acid phenyl ester

4-(tert-Butyl-dimethyl-silanyloxymethyl)-quinolin-6-ol

6-methoxy-4-methyl-quinoline-1-oxide