反应详情

To a stirred suspension of the title compound of Example 44 (0.400 g, 1.08 mmol), N-(tert-butoxycarbonyl)-glycine (0.227 g, 1.29 mmol) and 4-dimethyl-amino-pyridine (0.184 g, 1.51 mmol) in dichloromethane (20 ml) was added 1-[3-(dimethyl-amine)-propyl]-3-ethyl carboduimide (0.282 g, 1.51 mmol). After stirring for 6 hours, the mixture was purified by flash chromatography on silica gel eluting in ethyl acetate-hexane (2:3) to provide tert-butoxycarbonylamino-acetic acid 4-[2-amino-6-(5-chloro-2-ethoxy-phenyl)-pyrimidin-4-ylamino]-benzyl ester.

1. customthe mixture was purified by flash chromatography on silica gel eluting in ethyl acetate-hexane (2:3)