反应详情

A mixture of the product of Example 1, Step 6 (0.1 g, 0.29 mmol), 1-hydroxybenzotriazole (0.06 g, 0.44 mmol) and polymer bound 1,3-dicyclohexylcarbodiimide (0.4 g, 0.6 mmol, 1.52 mmol/g) in a 1:1 mixture of dichloromethane and DMF (4 ml) was stirred at room temperature for 30 min. A solution of 1-(2-methoxy-ethyl)-piperidine-4-carboxylic acid hydrochloride [WO 97/25309] (0.098 g, 0.44 mmol) in DMF (2 ml) was then added and the mixture stirred at room temperature overnight. The reaction mixture was then filtered, the solvent removed in vacuo and the crude residue purified by silica gel chromatography eluting with a 1:9:90 mixture of 0.88 ammonia solution:methanol:dichloromethane to give the title compound (0.12 g, 80%) as a yellow oil; MS(AP+) m/e 516 [M+H]+.

1. stirringthe mixture stirred at room temperature overnight
2. filtrationThe reaction mixture was then filtered
3. customthe solvent removed in vacuo
4. customthe crude residue purified by silica gel chromatography
5. washeluting with a 1:9:90 mixture of 0.88 ammonia solution