反应详情

To 124 mg 2-methyl-2-({1-[6-(2,2,2-trifluoro-ethoxy)-pyridin-3-ylmethoxy]-naphthalene-2-carbonyl}-amino)-propionic acid methyl ester in 4 mL THF and 1 mL methanol was added 1.3 mL of 1 M aqueous sodium hydroxide solution. After stirring at room temperature for 1 h the mixture was poured into cold water, acidified to pH 2 with 2 M HCl and extracted with ethyl acetate three times. The combined organic layers were dried over magnesium sulphate, filtrated and concentrated to provide a yellow oil, which could be crystallized from diisopropylether to yield 43 mg of 2-methyl-2-({1-[6-(2,2,2-trifluoro-ethoxy)-pyridin-3-ylmethoxy]-naphthalene-2-carbonyl}-amino)-propionic acid.

1. extractionextracted with ethyl acetate three times
2. dry with materialThe combined organic layers were dried over magnesium sulphate
3. filtrationfiltrated
4. concentrationconcentrated
5. customto provide a yellow oil, which
6. customcould be crystallized from diisopropylether