2(R)-Hydroxy-3-[4-({indan-5-yl-[4-(4-trifluoromethoxyphenyl)thiazol-2-yl]amino}methyl)benzoylamino]propionic acid methyl ester (0.10 g, 0.16 mmol) was dissolved in methanol (5 mL) and 1 N aqueous sodium hydroxide (0.16 mL, 0.16 mmol) was added and the resulting mixture was stirred at room temperature for 16 hours. 1 N hydrochloric acid (0.17 mL) and water (50 mL) were added and the mixture was extracted with ethyl acetate (50 mL). The organic phase was washed with water (50 mL), dried (MgSO4) and concentrated in vacuo. This afforded 0.06 g (61%) of the title compound.
