(2S)-3-methyl-1-N-[4-(trifluoromethoxy)phenyl]butane-1,2-diamine 、 2-(S)-(4-fluoro-phenyl)-4-morpholin-4-yl-4-oxo-butyric acid 在
N,N-二异丙基乙胺 、 N-[(dimethylamino)-3-oxo-1H-1,2,3-triazolo[4,5-b]pyridin-1-yl-methylene]-N-methylmethanaminium hexafluorophosphate 作用下,
生成
2-(S)-(4-fluoro-phenyl)-N-{2-methyl-1-(S)-[(4-trifluoromethoxy-phenylamino)-methyl]propyl}-4-morpholin-4-yl-4-oxo-butyramide