tert-butyl 1'-[7-[(2-methylpropan-2-yl)oxycarbonyl]pyrrolo[3,2-e]pyrimidin-4-yl]-1-oxo-5-phenylmethoxyspiro[imidazo[3,4-a]benzimidazole-3,4'-piperidine]-2-carboxylate 在
钯 氢气 、
四氢呋喃 作用下,
以
乙醇 、
四氢呋喃 为溶剂,
反应 4.0h,
以to give tert-butyl 5-hydroxy-1′-[7-[(2-methylpropan-2-yl)oxycarbonyl]pyrrolo[3,2-e]pyrimidin-4-yl]-1-oxospiro[imidazo[3,4-a]benzimidazole-3,4′-piperidine]-2-carboxylate (6.96 g, 90%) as a colourless solid的产率得到tert-butyl 5-hydroxy-1'-[7-[(2-methylpropan-2-yl)oxycarbonyl]pyrrolo[3,2-e]pyrimidin-4-yl]-1-oxospiro[imidazo[3,4-a]benzimidazole-3,4'-piperidine]-2-carboxylate