反応 #467393

反応方程式

1-[4-(thiazol-2-yl)-phenyl]-4(S)-hydroxy-2-amino-5(S)-N-(N-methoxycarbonyl-(L)-iso-leucyl)amino-6-phenyl-2-azahexane

NMM

N-methoxycarbonyl-(L)-valine

TPTU

→

1-[4-(Thiazol-2-yl)-phenyl]-4(S)-hydroxy-2-N-(N-methoxycarbonyl-(L)-valyl)amino-5(S)-N-(N-methoxycarbonyl-(L)-iso-leucyl)amino-6-phenyl-2-azahexane

溶媒

methylene chloride THF

DMF

DMF

反応条件

実験手順

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.

出典