申请人:Takeda Chemical Industries, Ltd.
公开号:EP0135194A1
公开(公告)日:1985-03-27
A 2-azetidinone derivative having a group of the formula
wherein R' and R2 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 salts or ester, and methods of producing the same,
(1) a method comprising subjecting a 2-azetidinone derivative having a group of the formula
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
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 2-氮杂环丁酮衍生物,其基团的结构式为
其中R'和R2相同或不同,各自代表氢原子、烷基、芳基或芳基烷基,可在1位上有取代基,在3位上有氨基,可酰化或保护,其盐或酯,以及生产这种衍生物的方法、
(1)一种方法,包括将具有式中基团的 2-氮杂环丁酮衍生物
其中符号如上定义在 1 位,氨基在 3 位的 2-氮杂环丁酮衍生物、其盐或酯进行酰化或保护基引入反应,和
(2) 一种方法,包括使在 1 位上具有羟基和在 3 位上具有氨基的 2-氮杂环丁酮衍生物或其盐与式中化合物进行酰化或保护基团引入反应
其中 W 为卤素原子;其他符号如上定义;其盐或酯。上述目标化合物可用作优良的抗菌剂或合成抗菌剂的重要中间体。