申请人:Eisai Co., Ltd.
公开号:EP1426376A1
公开(公告)日:2004-06-09
A process for the preparation of carbapenem antibiotics, which is free from the two disadvantages: (1) use of column chromatography and (2) recovery of a difficulty soluble salt and by which the objective compounds can be efficiently prepared in a short period. Specifically, a process for the preparation of compounds represented by the general formula (IV), salts thereof, or hydrates of both, characterized by reacting a compound represented by the general formula (I) with a compound represented by the general formula (II): X-H (wherein X is a member selected from the group consisting of substituents represented by the formulae (X-1) to (X-8)) to thereby obtain a compound represented by the general formula (III) or salt thereof, converting the compound (III) or salt thereof into a compound represented by the general formula (IV) or a salt thereof through the removal of the protecting group (R3), and purifying the compound (IV) or salt thereof by crystallization.
一种制备碳青霉烯类抗生素的方法,该方法没有以下两个缺点:(1)使用柱层析和(2)回收难溶性盐,通过该方法可以在短时间内高效地制备目标化合物。具体而言,这是一种制备由通用公式(IV)表示的化合物、其盐或两者的水合物的方法,其特征在于将通用公式(I)表示的化合物与通用公式(II):X-H(其中X是由公式(X-1)至(X-8)表示的取代基中选择的一个成员)表示的化合物反应,从而获得由通用公式(III)表示的化合物或其盐,通过去除保护基(R3)将化合物(III)或其盐转化为由通用公式(IV)表示的化合物或其盐,并通过结晶纯化化合物(IV)或其盐。