4-Amino-1-butanol → N-(4-Hydroxy-butyl)-6-(5-methyl-3-phenyl-isoxazol-4-ylmethoxy)-nicotinamide

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To a solution of 6-(5-methyl-3-phenyl-isoxazol-4-ylmethoxy)-nicotinic acid methyl ester (180 mg, 0.55 mmol) and 4-amino-1-butanol (59 mg, 0.66 mmol) in toluene (1 mL) was added 1,5,7-triazabicyclo[4.4.0]dec-5-ene (23 mg, 0.17 mmol) and the reaction stirred under argon for 6 h at room temperature. Saturated aqueous sodium bicarbonate (1 mL) was then added and the resulting mixture was extracted with ethyl acetate (3×5 mL). The combined organic extracts were then dried over sodium sulfate and evaporated. Purification by chromatography (SiO2, dichloromethane:methanol=100:0 to 9:1) afforded the title compound (78 mg, 37%) which was obtained as a white solid. MS: m/e=382.2 [M+H]+.

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