(2R,5R)-4-carboxymethyl-5-(4-methylpyrazol-1-ylmethyl)-2-methylpiperazine-1-carboxylic acid tert-butyl ester 、
6-benzyl-3,3-dimethyl-1H,2H,3H-pyrrolo[3,2-c]pyridine hydrochloride 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
N,N-二甲基甲酰胺 为溶剂,
反应 18.0h,
以83%的产率得到tert-butyl (2R,5R)-4-(2-{6-benzyl-3,3-dimethyl-1H,2H,3H-pyrrolo[3,2-c]pyridin-1-yl}-2-oxoethyl)-2-methyl-5-[(4-methyl-1H-pyrazol-1-yl)methyl]piperazine-1-carboxylate hydrochloride