反应详情

A stirred solution of 48 mg of N-[3-methoxy-4-(5-oxazolyl)phenyl]-N′-[1,1-dimethyl-2-(1-piperazinyl)ethyl]oxalamide (1.2 mmol) and 13 mg of cyclohexanecarboxaldehyde (1.2 mmol) in 1 ml of a 5% acetic acid/dichloromethane mixture was treated with a solution of 38 mg of sodium triacetoxyborohydride (1.8 mmol) in 1 ml of a 5% acetic acid/dichloromethane mixture. After stirring overnight at room temperature the reaction mixture was diluted with 10 ml of dichloromethane and washed with 8 ml of a sodium bicarbonate solution followed by 8 ml of water. The organic layer was then evaporated and purified using flash chromatography on a silica gel column eluting with 5% methanol/dichloromethane to give after evaporation of the fractions 14.3 mg (0.3 mmol, 25%) of N-[2-[4-(cyclohexylmethyl)-1-piperazinyl-1,1-dimethylethyl]-N′-[3-methoxy-4-(5-oxazolyl)phenyl]oxalamide in the form of a white solid. MS: m/e 498.2 [M+H]+.

1. washwashed with 8 ml of a sodium bicarbonate solution
2. customThe organic layer was then evaporated
3. custompurified
4. washeluting with 5% methanol/dichloromethane
5. customto give
6. customafter evaporation of the fractions 14.3 mg (0.3 mmol, 25%) of N-[2-[4-(cyclohexylmethyl)-1-piperazinyl-1,1-dimethylethyl]-N′-[3-methoxy-4-(5-oxazolyl)phenyl]oxalamide in the form of a white solid