反应详情

3-(4-{2-Oxo-3-[4-(3-o-tolyl-ureido)phenyl)2H-pyridin-1-ylmethyl}phenyl)propionic acid ethyl ester (P9, 55 mg, 0.11 mmol) and lithium hydroxide (50 mg, 2.5 mmol) were stirred at 60° C. for 30 minutes in tetrahydrofuran (5 mL) and water (5 mL). The reaction mixture was acidified to pH 1 with 1 N aqueous hydrochloric acid and extracted with ethyl acetate. The organic layer was dried (anhydrous magnesium sulfate) and evaporated to dryness to afford the title compound as a solid.

1. extractionextracted with ethyl acetate
2. dry with materialThe organic layer was dried (anhydrous magnesium sulfate)
3. customevaporated to dryness