申请人:Bayer Aktiengesellschaft
公开号:US04699992A1
公开(公告)日:1987-10-13
Novel 3-amino-2-benzoyl-acrylic acid derivatives of the formula ##STR1## in which R.sup.1 represents the nitrile group, an ester group --COOR.sup.4 or carboxamide group ##STR2## R.sup.4 denoting C.sub.1 -C.sub.6 -alkyl, and R.sup.5 and R.sup.6 representing hydrogen or C.sub.1 -C.sub.3 -alkyl or phenyl, R.sup.2 and R.sup.3, which can be identical or different, represent a C.sub.1 -C.sub.6 -alkyl radical and, furthermore, can form, together with the nitrogen atom to which they are bonded, a 5- or 6-membered heterocyclic ring which can additionally contain as ring member the atoms or groups --O--, --S--, --SO-- or --SO.sub.2 --, X represents halogen, X.sup.1 denotes hydrogen, methyl, nitro or halogen, X.sup.2 denotes halogen or methyl, and X.sup.3 denotes hydrogen or halogen, are prepared by reacting ##STR3## The products can be converted into known antibacterials.
3-氨基-2-苯甲酰基丙烯酸衍生物的化学式为##STR1## 其中R.sup.1代表腈基,酯基--COOR.sup.4或羧酰胺基##STR2## R.sup.4表示C.sub.1 -C.sub.6 -烷基,R.sup.5和R.sup.6代表氢或C.sub.1 -C.sub.3 -烷基或苯基,R.sup.2和R.sup.3,可以相同也可以不同,代表C.sub.1 -C.sub.6 -烷基基团,并且可以与它们结合的氮原子一起形成一个5-或6-成员杂环环,该环还可以额外包含原子或基团--O--,--S--,--SO--或--SO.sub.2 --,X代表卤素,X.sup.1代表氢,甲基,硝基或卤素,X.sup.2代表卤素或甲基,X.sup.3代表氢或卤素,通过反应##STR3## 制备。这些产物可以转化为已知的抗菌药物。