申请人:Wakunaga Pharmaceutical Co., Ltd.
公开号:US05359066A1
公开(公告)日:1994-10-25
A compound represented by the following general formula: ##STR1## which is useful as an intermediate for production of a clinically excellent synthetic antibacterial, a salt thereof, and a process for producing the same. In said formula, R.sup.1 is a hydrogen atom or a carboxyl-protecting group; R.sup.2 is a hydrogen atom or a lower alkyl group; X.sup.1 is a hydrogen atom or a halogen atom; X.sup.2 is a halogen atom; X.sub.a.sup.5 is a hydrogen atom or a halogen atom; A is a methylene group; a group of >CH--COOR.sup.4, etc., in which R.sup.4, R.sup.5 and R.sup.6 each are a hydrogen atom or a carboxyl-protecting group; B is a methylene group or a carbonyl group; provided that both A and B must not be methylene groups at the same time.
以下是一种化合物的通用公式:##STR1##,它可用作合成临床上优良的合成抗菌剂的中间体,其盐以及制备该化合物的方法。在上述公式中,R.sup.1是氢原子或羧基保护基;R.sup.2是氢原子或较低的烷基基团;X.sup.1是氢原子或卤素原子;X.sup.2是卤素原子;X.sub.a.sup.5是氢原子或卤素原子;A是亚甲基基团;一个>CH--COOR.sup.4等基团,其中R.sup.4、R.sup.5和R.sup.6分别是氢原子或羧基保护基;B是亚甲基基团或羰基基团;但必须同时满足A和B不能都是亚甲基基团。