[Problem]Provision of a commercially advantageous method for producing an intermediate which is important for producing the antibacterial and which has a mother nucleus common to the antibacterial, and intermediates produced by such method. [Means to Solve the Problem]
A method for producing a compound represented by formula (VI):
which comprises the steps of treating a compound represented by formula (IV):
with a base in the presence of a base to produce a compound represented by formula (V):
and hydrolyzing this compound;
a compound represented by formula (II):
a compound represented by formula (Ia):
a compound represented by formula (V):
and a compound represented by formula (VI)
[问题] 提供一种商业上有利的方法,用于生产一种重要的中间体,该中间体对于生产抗菌剂非常重要,并且具有与抗菌剂相同的母核,以及通过此类方法生产的中间体。
[解决问题的方法] 一种生产式(VI)化合物的方法,该方法包括以下步骤:将式(IV)化合物在碱存在下处理以产生式(V)化合物,并在碱存在下
水解该化合物;式(II)化合物;式(Ia)化合物;式(V)化合物和式(VI)化合物。