lithium (S)-4-(3-(2-chloro-3-fluorobenzyl)-1-methylureido)-5-(isoquinolin-3-ylcarbamoyloxy)pentanoate 、
2-(1h-Benzotriazole-1-yl)-1,1,3,3-tetramethyluronium hexafluorophosphate 、
2-甲基-4,5,6,7-四氢-3H-咪唑并[4,5-c]吡啶双盐酸盐 在
乙腈 、
水 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
反应 1.0h,
以to give (S)-2-((2-chloro-3-fluorobenzyl)(methyl)amino)-5-(2-methyl-6,7-dihydro-1H-imidazo[4,5-c]pyridin-5(4H)-yl)-5-oxopentyl isoquinolin-3-ylcarbamate (182.1 mg, 68% for two steps)的产率得到(S)-2-((2-chloro-3-fluorobenzyl)(methyl)amino)-5-(2-methyl-6,7-dihydro-1H-imidazo[4,5-c]pyridin-5(4H)-yl)-5-oxopentyl isoquinolin-3-ylcarbamate