2-[5-((R)-3-methylpiperazin-1-yl)thiazol-4-yl]-1H-benzoimidazole dihydrochloride salt 、
2-(2-Oxo-[1,3]oxazolo[4,5-b]pyridin-3-yl)acetic acid 、 2-(2-Oxo-[1,3]oxazolo[4,5-b]pyridin-4-yl)acetic acid 在
N,N-二异丙基乙胺 、 N-[(dimethylamino)-3-oxo-1H-1,2,3-triazolo[4,5-b]pyridin-1-yl-methylene]-N-methylmethanaminium hexafluorophosphate 作用下,
以
二氯甲烷 为溶剂,
反应 2.5h,
生成
3-(2-{(R)-4-[4-(1H-benzoimidazol-2-yl)-thiazol-5-yl]-2-methyl-piperazin-1-yl}-2-oxo-ethyl)-3H-oxazolo[4,5-b]pyridin-2-one 、
4-(2-{(R)-4-[4-(1H-benzoimidazol-2-yl)-thiazol-5-yl]-2-methyl-piperazin-1-yl}-2-oxo-ethyl)-4H-oxazolo[4,5-b]pyridin-2-one