2-甲基戊烷-1,2-二胺

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: 191 mg (0.62 mmol) of TBTU and 0.25 ml (2.27 mmol) of 4-methylmorpholine and 72 mg (0.62 mmol) of rac-2-methylpentane-1,2-diamine were added to 200 mg (0.57 mmol) of 6-chloro-8-[(2,6-difluorobenzyl)oxy]-2-methylimidazo[1,2-a]pyridine-3-carboxylic acid Example 16A in DMF (2.0 ml), and the reaction mixture was stirred at RT overnight. 36 mg (0.31 mmol) of rac-2-methylpentane-1,2-diamine and 0.06 ml (0.57 mmol) of 4-methylmorpholine were then added, and stirring was continued at RT overnight. The mixture was diluted with water/TFA and purified by preparative RP-HPLC (acetonitrile/water gradient with addition of 0.1% TFA). The product fraction was concentrated. Saturated aqueous sodium bicarbonate solution was added to the residue, and the mixture was extracted three times with dichloromethane. The combined organic phases were dried over sodium sulphate, filtered off and concentrated. The residue was purified by silica gel chromatography (dichloromethane/methanol: 10:1, then dichloromethane/2N ammonia in methanol 20:1). This gave 189 mg (73% of theory, purity 99%) of the target compound. stirring was continued at RT overnight purified by preparative RP-HPLC (acetonitrile/water gradient with addition of 0.1% TFA) The product fraction was concentrated Saturated aqueous sodium bicarbonate solution was added to the residue the mixture was extracted three times with dichloromethane The combined organic phases were dried over sodium sulphate filtered off concentrated The residue was purified by silica gel chromatography (dichloromethane/methanol

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: 77 mg (0.66 mmol) of rac-2-methylpentane-1,2-diamine were added to 200 mg (0.60 mmol) of 8-[(2,6-difluorobenzyl)oxy]-2,6-dimethylimidazo[1,2-a]pyridine-3-carboxylic acid Example 21A, 203 mg (0.63 mmol) of TBTU and 0.27 ml (2.41 mmol) of 4-methylmorpholine in DMF (2.1 ml), and the reaction mixture was stirred at RT overnight. The mixture was diluted with water/TFA and purified by preparative RP-HPLC (acetonitrile/water gradient with addition of 0.1% TFA). The product fraction was concentrated. Saturated aqueous sodium bicarbonate solution was added to the residue, and the mixture was extracted twice with dichloromethane. The combined organic phases were dried over sodium sulphate, filtered off and concentrated. This gave 199 mg (76% of theory, purity 99%) of the target compound. purified by preparative RP-HPLC (acetonitrile/water gradient with addition of 0.1% TFA) The product fraction was concentrated Saturated aqueous sodium bicarbonate solution was added to the residue the mixture was extracted twice with dichloromethane The combined organic phases were dried over sodium sulphate filtered off concentrated

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: 77 mg (0.66 mmol) of rac-2-methylpentane-1,2-diamine were added to 200 mg (0.60 mmol) of 8-[(2,6-difluorobenzyl)oxy]-2,6-dimethylimidazo[1,2-a]pyridine-3-carboxylic acid Example 21A, 203 mg (0.63 mmol) of TBTU and 0.27 ml (2.41 mmol) of 4-methylmorpholine in DMF (2.1 ml), and the reaction mixture was stirred at RT overnight. The mixture was diluted with water/TFA and purified by preparative RP-HPLC (acetonitrile/water gradient with addition of 0.1% TFA). The product fraction was concentrated. Saturated aqueous sodium bicarbonate solution was added to the residue, and the mixture was extracted twice with dichloromethane. The combined organic phases were dried over sodium sulphate, filtered off and concentrated. This gave 199 mg (76% of theory, purity 99%) of the target compound. purified by preparative RP-HPLC (acetonitrile/water gradient with addition of 0.1% TFA) The product fraction was concentrated Saturated aqueous sodium bicarbonate solution was added to the residue the mixture was extracted twice with dichloromethane The combined organic phases were dried over sodium sulphate filtered off concentrated