反应详情

A solution of [7-(methyloxy)-2-oxo-1(2H)-quinolinyl]acetaldehyde (65 mg, 0.3 mmol) and 1,1-dimethylethyl (2,3-dihydro[1,4]dioxino[2,3-c]pyridin-7-ylmethyl)-4-piperidinylcarbamate (for a synthesis see WO2004/058144 Example 99(h)) (105 mg, 0.3 mmol) in chloroform (3 ml) and MeOH (3 ml) was stirred at rt for 1 h. The mixture was then treated with NaBH(OAc)3 (190.8 mg, 0.9 mmol), stirred at rt for 0.5 h. 1,1-dimethylethyl (2,3-dihydro[1,4]dioxino[2,3-c]pyridin-7-ylmethyl)-4-piperidinylcarbamate (52 mg, 0.15 mmol) and NaBH(OAc)3 (127 mg, 0.6 mmol) were added and the reaction stirred at rt for 1 hour. The solvents were then removed and the residue was subjected to column chromatography on silica gel eluting with 0-10% methanol-DCM to afford the desired compound (92 mg, 56%).

1. stirringthe reaction stirred at rt for 1 hour
2. customThe solvents were then removed