反应详情

Ethyl 4-(2′-{[(3,5-bis-trifluoromethyl-benzyl)-(5-morpholin-4-yl-pyrimidin-2-yl)-amino]-methyl}-4′-trifluoromethyl-biphenyl-2-yloxy)-butyrate (157 mg) is dissolved in ethanol (4 ml), and thereto is added 1N-aqueous sodium hydroxide solution (1 ml), and the mixture is stirred at room temperature for 2 hours. To the reaction solution are added a 1N-hydrochloric acid and ethyl acetate and the mixture is separated, and the organic layer is washed with a saturated brine, dried over magnesium sulfate, and concentrated under reduced pressure. The resulting residue is purified by silica gel column chromatography (chloroform:methanol=1:0→9:1) to give 4-(2′-{[(3,5-bis-trifluoromethyl-benzyl)-(5-morpholin-4-yl-pyrimidin-2-yl)-amino]-methyl}-4′-trifluoromethyl-biphenyl-2-yloxy)-butyric acid (146 mg). The resulting carboxylic acid is dissolved in ethanol (1 ml), and thereto is added 1N-aqueous sodium hydroxide solution (197 μl) and the reaction solution is concentrated under reduced pressure to give 4-(2′-{[(3,5-bis-trifluoromethyl-benzyl)-(5-morpholin-4-yl-pyrimidin-2-yl)-amino]-methyl}-4′-trifluoromethyl-biphenyl-2-yloxy)-butyric acid sodium salt (146 mg). MS (m/z): 741 [M−Na]−

1. concentrationthe reaction solution is concentrated under reduced pressure