反应详情

To a suspension of methyl 4-(5-hydroxy-3-methylpyridin-2-yloxy)benzoate synthesised in step 3 (0.042 g, 0.162 mmol), [3-(2,6-dichloro-phenyl)-5-isopropyl-isoxazol-4-yl]methanol (0.046 g; 0.162 mmol) (for preparation refer to: P. Maloney et al. “Identification of a chemical tool for the orphan nuclear receptor FXR” J. Med. Chem. 2000, 43(16), 2971-2974) and triphenylphosphine (0.052 g, 0.2 mmol) in benzene (2 ml) was added diisopropyl azodicarboxylate (0.051 g, 0.25 mmol). The mixture was stirred at room temperature for 20 h, the solvent was removed in vacuo and the residue was purified by preparative HPLC to provide methyl 4-(5-((3-(2,6-dichlorophenyl)-5-isopropylisoxazol-4-yl)methoxy)-3-methylpyridin-2-yloxy)benzoate (0.06 g, 70% yield).

1. customfor preparation
2. customthe solvent was removed in vacuo
3. customthe residue was purified by preparative HPLC