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.
Chiral synthesis of protected 3-amino-4-(alkoxycarbonyl)-2-azetidinones from .beta.-hydroxyaspartic acid
作者:Philip G. Mattingly、Marvin J. Miller、Robin D. G. Cooper、B. W. Daughtery
DOI:10.1021/jo00168a038
日期:1983.10
1-carboxymethoxy acetidinones and their production
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.