9-(8-aminodibenzo[b,d]thiophen-4-yl)-2-morpholino-4H-pyrido[1,2-a]pyrimidin-4-one 、
N-Boc-(S)-3-甲酸哌啶 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
异丁酰胺 为溶剂,
以78%的产率得到(3S)-tert-butyl 3-[[6-(2-morpholin-4-yl-4-oxopyrido[1,2-a]pyrimidin-9-yl)dibenzothiophen-2-yl]carbamoyl]piperidine-1-carboxylate