benzyl [(S)-1-[[4-[2-(benzyloxy)-5-cyclopropyl-8-fluoro-1,2,3,5-tetrahydro-1,3-dioxopyrimido[1,6-a]benzimidazol-7-yl]-1-piperazinyl]carbonyl]ethyl]carbamate 在
甲烷 作用下,
以
N,N-二甲基甲酰胺 、
钯 为溶剂,
以There are obtained 62 mg (84%) of 7-(4-L-alanyl-1-piperazinyl)-5-cyclopropyl-8-fluoro-2-hydroxypyrimido[1,6-a]benzimidazole-1,3(2H,5H)-dione的产率得到7-(4-L-alanyl-1-piperazinyl)-5-cyclopropyl-8-fluoro-2-hydroxypyrimido[1,6-a]benzimidazole-1,3(2H,5H)-dione