Sodium Hydroxide → 3-[(3-(Aminocarbonyl)-4-{[4-fluoro-3-(methyloxy)phenyl]amino}-8-methyl-6-quinolinyl)thio]propanoic acid

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Reaction Steps

A solution of Intermediate 52 (0.95 g) in ethanol (10 ml) was treated with 2M sodium hydroxide (10 ml) and the resulting solution was left standing at room temperature overnight. The solvent was evaporated in vacuo. The residue was dissolved in water and acidified with 2M hydrochloric acid to pH 4. The resulting precipitate was filtered off, washed with water and dried in vacuo to give the title compound as an orange solid (0.8 g).

Provenance & Evidence