申请人:Takeda Chemical Industries, Ltd.
公开号:US04794108A1
公开(公告)日:1988-12-27
A 2-azetidinone derivative having a group of the formula ##STR1## wherein R.sup.1 and R.sup.2 are the same or different and each represents a hydrogen atom, alkyl, aryl or arylalkyl which may have a substituent at the 1-position and an amino group, at the 3-position, which may be acylated or protected, its salt or ester, and methods of producing the same, (1) a method comprising subjecting a 2-azetidinone derivative having a group of the formula ##STR2## wherein the symbols are as defined above at the 1-position and an amino group at the 3-position, its salt or ester to an acylation or protective-group introduction reaction, and (2) a method comprising reacting a 2-azetidinone derivative having a hydroxy group at the 1-position and an amino group, at the 3-position, which may be acylated or protected, or its salt with a compound of the formula ##STR3## wherein W is a halogen atom; other symbols are as defined above, its salt or ester. The above objective compounds are utilizable as excellent antimicrobial agents or as valuable intermediates for the synthesis of the same.
一种具有以下结构的2-吖啶酮衍生物:其中R.sup.1和R.sup.2相同或不同,分别代表氢原子、烷基、芳基或芳基烷基,在1-位置可能有取代基,3-位置有氨基,可能被酰化或保护,其盐或酯,以及其生产方法,(1) 包括将具有以下结构的2-吖啶酮衍生物进行酰化或保护基引入反应的方法,其中符号如上所定义,在1-位置和3-位置有氨基,其盐或酯;(2) 包括将在1-位置有羟基,3-位置有氨基,可能被酰化或保护,或其盐的2-吖啶酮衍生物与具有以下结构的化合物反应的方法,其中W是卤素原子;其他符号如上所定义,其盐或酯。上述目标化合物可用作优秀的抗微生物药物或用于其合成的有价值的中间体。