反应详情

To a suspension of 2-(tert-butoxycarbonyl-ethoxycarbonylmethyl-amino)-propionic acid TFA salt (197 mg, 0.714 mmol) in THF (10 ml) at room temperature is added EDCI (219 mg, 1.142 mmol) and HOBT (164 mg, 1.071 mmol). The mixture is stirred at room temperature for 10 mins and then was added a solution of (R)-3-amino-4-(3′-chloro-biphenyl-4-yl)-butyric acid ethyl ester (202 mg, 0.571 mmol) in THF and TEA (0.199 ml, 1.428 mmol). The mixture is stirred at room temperature. Reverse phase HPLC [30 to 90% ACN—H2O (0.1% TFA) over 10 min by X-Bridge phenyl column] give the title compound (290 mg, 71% yield). LCMS (condition B): 575 (M+1); retention time=1.52 min.

1. stirringThe mixture is stirred at room temperature