methyl 4-[[[6-[bis(2-methoxyethyl)amino]-4-(4-methyl-3-oxopiperazin-1-yl)-8-oxo-7H-pyrimido[5,4-d]pyrimidin-2-yl]-(2-methoxyethyl)amino]methyl]benzoate 、
2-甲基-4,5,6,7-四氢恶唑并[4,5-C〕吡啶盐酸盐 在
(benzotriazo-1-yloxy)tris(dimethylamino)phosphonium hexafluorophosphate 、
N,N-二异丙基乙胺 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
反应 2.0h,
以90 mg的产率得到methyl 4-[[[6-[bis(2-methoxyethyl)amino]-8-(2-methyl-6,7-dihydro-4H-[1,3]oxazolo[4,5-c]pyridin-5-yl)-4-(4-methyl-3-oxopiperazin-1-yl)pyrimido[5,4-d]pyrimidin-2-yl]-(2-methoxyethyl)amino]methyl]benzoate