反应详情

3-[(2-Acetylamino-4-methyl-cyclohexanecarbonyl)-isopropyl-amino]-5-phenyl-thiophene-2-carboxylic acid methyl ester (8.5 mg, 0.019 mmol) was dissolved in a 4:1 mixture of dioxane:H2O (250 ul) and then LiOH 1N (22 ul, 0.023 mmol) was added. After 22 hours of stirring at room temperature, solvents were removed and then partitioned between 5 ml of H2O acidified to pH 4 and 5 ml of EtOAc. The organic layer was separated and the aqueous phase was washed twice with ethyl acetate (2×5 mL). The combined ethyl acetate layer was dried (Na2SO4) and concentrated to give 7.5 mg (91%) of 3-[(2-Acetylamino-4-methyl-cyclohexanecarbonyl)-isopropyl-amino]-5-phenyl-thiophene-2-carboxylic acid (Compound 12).

1. customsolvents were removed
2. custompartitioned between 5 ml of H2O
3. customThe organic layer was separated
4. washthe aqueous phase was washed twice with ethyl acetate (2×5 mL)
5. dry with materialThe combined ethyl acetate layer was dried (Na2SO4)
6. concentrationconcentrated