tert-butyl 4-[[(2S,3R)-2-(4-carbamoylpiperazine-1-carbonyl)-4-oxoazetidin-3-yl]methyl]piperidine-1-carboxylate 、
1-diisopropylmethoxycarbonylpiperazine-4-carbonylchloride 在
4-二甲氨基吡啶 三乙胺 作用下,
以
二氯甲烷 为溶剂,
反应 24.0h,
以29%的产率得到2,4-dimethylpentan-3-yl 4-[(2S,3R)-2-(4-carbamoylpiperazine-1-carbonyl)-3-[[1-[(2-methylpropan-2-yl)oxycarbonyl]piperidin-4-yl]methyl]-4-oxoazetidine-1-carbonyl]piperazine-1-carboxylate