反应详情

146 mg (0.34 mmol) of (R)-2-amino-3-(4-methoxy-phenyl)-1-(3-butyloxy-3-o-tolylazetidin-1-yl)propan-1-one hydrochloride in solution in 2 ml of dimethylformamide are added to a solution of 64 mg (0.34 mmol) of 3-(5-methyl-3H-imidazol-4-yl)propanoic acid chloride, 119 mg (2.34 mmol) of TBTU and 0.15 ml (1.1 mmol) of triethylamine in 2 ml of dimethylformamide. The reaction mixture is stirred for 2 hours at ambient temperature. The reaction is stopped by adding 10 ml of water and then extracted with ethyl acetate. The organic phases are combined, washed with a 1N solution of sodium hydroxide and then a saturated solution of sodium chloride, and dried over sodium sulphate. After filtration, the solvents are evaporated off and the residue is then purified by silica gel chromatography (eluent 90/10 dichloromethane/methanol). 154 mg of N—[(R)-2-(3-butoxy-3-o-tolylazetidin-1-yl)-1-(4-methoxybenzyl)-2-oxoethyl]-3-(5-methyl-3H-imidazol-4-yl)propionamide are obtained in the form of a white powder with a yield of 86%.

1. extractionextracted with ethyl acetate
2. washwashed with a 1N solution of sodium hydroxide
3. dry with materiala saturated solution of sodium chloride, and dried over sodium sulphate
4. filtrationAfter filtration
5. customthe solvents are evaporated off
6. customthe residue is then purified by silica gel chromatography (eluent 90/10 dichloromethane/methanol)