申请人:Takeda Chemical Industries, Ltd.
公开号:US04684724A1
公开(公告)日:1987-08-04
4-Cyano-2-azetidinone derivatives represented by the formula ##STR1## wherein R.sup.1 is an amino group which may be acylated or protected, X is a hydrogen atom or a methoxy group and W is a hydrogen atom or a sulfo group, and methods of producing the same, for example, as represented by ##STR2## wherein R.sup.2 is an acylated or protected amino group, Y is a halogen atom or a group having the formula --OCOR.sup.3, --SCOR.sup.3 or --S(O).sub.n --R.sup.3 (R.sup.3 being a hydrocarbyl group and n an integer 1 or 2), R.sup.4 is an amino group which may be acylated or protected and X is as defined above. Compounds [I] are useful as advantageous intermediates for the synthesis of optically active 4-substituted-2-azetidinone derivatives, and, when W=SO.sub.3 H, [I] are also useful as antimicrobial agents and as beta-lactamase inhibitors.
4-氰基-2-氮杂环己酮衍生物的化学式为 ##STR1## 其中R.sup.1是氨基基团,可以酰化或保护,X是氢原子或甲氧基,W是氢原子或磺酰基团,以及制备它们的方法,例如,如下所示的化合物: ##STR2## 其中R.sup.2是酰化或保护的氨基基团,Y是卤素原子或具有以下公式的基团 -OCOR.sup.3,-SCOR.sup.3或-S(O).sub.n-R.sup.3(其中R.sup.3是烃基团,n是1或2的整数),R.sup.4是氨基基团,可以酰化或保护,X如上所定义。化合物[I]可用作合成光学活性的4-取代-2-氮杂环己酮衍生物的有利中间体,并且当W = SO.sub.3 H时,[I]也可用作抗微生物剂和β-内酰胺酶抑制剂。