9-benzhydryloxy-7-(4-fluoro-benzyl)-8-oxo-7,8-dihydro-6H-pyrrolo[3,4-g]quinoline-5-carboxylic acid 、
ethyl (2S)-2-[[phenoxy(2-piperazin-1-ylethyl)phosphoryl]amino]propanoate 在
N,N-二异丙基乙胺 、 Methanaminium,N-[(dimethylamino)(3H-1,2,3-triazolo[4,5-b]pyridin-3-yloxy)methylene]-N-methyl-, hexafluorophosphate(1-) 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
以65%的产率得到ethyl (2S)-2-[[2-[4-[9-benzhydryloxy-7-[(4-fluorophenyl)methyl]-8-oxo-6H-pyrrolo[3,4-g]quinoline-5-carbonyl]piperazin-1-yl]ethyl-phenoxyphosphoryl]amino]propanoate