方法以1，3-溴丙烷与乙酰乙酸乙酯为原料经环合、开环、溴代等反应合成。
METHODS The compound was synthesized through the reaction of cyclization, split, bromination et al and using 1,3-propyl bromide and ethyl acetoacetate as raw materials.
西司他丁钠的合成以乙酰乙酸乙酯和1-溴-5-氯戊烷为原料，经活性亚甲基烃化、成肟和水解3步反应得7-氯-2-氧庚酸乙酯；
The synthesis of Cilastatin sodium started from ethyl acetoacetate and 1-bromo-5-chloropentane, through 3 steps to produce ethyl 7-chloro-2-oxoheptanoate;
西司他丁钠的合成以乙酰乙酸乙酯和1-溴-5-氯戊烷为原料，经活性亚甲基烃化、成肟和水解3步反应得7-氯-2-氧庚酸乙酯；
The synthesis of Cilastatin sodium started from ethyl acetoacetate and 1-bromo-5-chloropentane, through 3 steps to produce ethyl 7-chloro-2-oxoheptanoate;
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