申请人:FUJISAWA PHARMACEUTICAL CO., LTD.
公开号:EP0530368A1
公开(公告)日:1993-03-10
A compound represented by general formula (I), which is useful as an intermediate for the production of a clinically excellent synthetic antibacterial, a salt thereof, and a process for producing the same. In said formula, R¹ represents hydrogen or a carboxyl protective group, R² represents hydrogen or lower alkyl, X¹ represents hydrogen or halogen, X² represents halogen, X⁵a represents hydrogen or halogen, A represents methylene, =CH-COOR⁴, etc., and B represents methylene or carbonyl, provided that A and B should not be methylene groups at the same time.
一种通式(I)代表的化合物,它可作为生产临床上极好的合成抗菌剂的中间体、其盐及其生产工艺。在所述式中,R¹代表氢或羧基保护基,R²代表氢或低级烷基,X¹代表氢或卤素,X²代表卤素,X⁵a代表氢或卤素,A代表亚甲基、=CH-COOR⁴等,B代表亚甲基或羰基,但A和B不应同时为亚甲基。