The present disclosure provides a method for preparing a 7α-alkoxyoxacephem intermediate compound, the method comprising a process (S1) including: reacting a compound represented by a following chemical formula 1 with a halogen compound in an organic solvent to form a reaction product such that unreacted halogen compound remains; and adding metal alkoxide and reducing agent to the reaction product with the unreacted halogen compound remaining, thereby to produce a compound represented by a following chemical formula 2:
where R is a Cl, Br, I, halogen derivative, R
1
is a carboxyl protecting group including diphenylmethyl, p-methoxybenzyl, p-nitrobenzyl or hydrogen (H), and R
2
is an alkyl group having 1 to 4 carbon atoms.
本公开提供一种制备7α-烷氧氧代
头孢菌素中间体化合物的方法,该方法包括以下步骤(S1):在有机溶剂中,将
化学式1所代表的化合物与卤素化合物反应,形成反应产物,使未反应的卤素化合物保留;并向保留有未反应卤素化合物的反应产物中加入
金属烷氧化物和还原剂,从而产生
化学式2所代表的化合物:其中,R为Cl、Br、I、卤素衍
生物,R1为包括二苯甲基、对
甲氧基苯甲基、对
硝基苯甲基或氢(H)的羧基保护基,R2为具有1至4个碳原子的烷基。