反应详情

Under an argon atmosphere, 321 mg (0.60 mmol) of 1-[4-(thiazol-2-yl)-phenyl]-4(S)-hydroxy-2-amino-5(S)-N-(N-methoxycarbonyl-(L)-iso-leucyl)amino-6-phenyl-2-azahexane (Example 21b) and 182 mg (1.8 mmol) of NMM in 5.8 ml of DMF are added to 126 mg (0.72 mmol) of N-methoxycarbonyl-(L)-valine and 178 mg (0.60 mmol) of TPTU in 3 ml of DMF; the mixture is stirred at room temperature for 15 hours and worked up analogously to Example 3. TLC: Rf =0.15 (methylene chloride/THF 4:1); HPLC20-100 : tRet =14.5; FAB MS (M+H)+ =697.