申请人:Ishiguro Masaji
公开号:US06867297B1
公开(公告)日:2005-03-15
An azetidinone derivative represented by the general formula (1)
(wherein OR
1
is a protected hydroxyl group; R
2
is a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkenyl group or a substituted or unsubstituted aromatic group) is reacted with an ester compound represented by the formula (2)
(wherein CO
2
R
3
is an esterified carboxyl group; X and Y are the same or different and represent individually a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkenyl group, a substituted or unsubstituted aralkyl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted alkylthio group, a substituted or unsubstituted alkenylthio group, a substituted or unsubstituted aralkylthio group, a substituted or unsubstituted arylthio group, a substituted or unsubstituted alkyloxy group, a substituted or unsubstituted alkenyloxy group, a substituted or unsubstituted aralkyloxy group, a substituted or unsubstituted aryloxy group, a substituted or unsubstituted silyloxy group, a substituted or unsubstituted heterocyclic group, a substituted or unsubstituted heterocyclic-thio group, a substituted or unsubstituted heterocyclic-oxy group, a substituted or unsubstituted acyl group, a substituted or unsubstituted ester group, a substituted or unsubstituted thio ester group, a substituted or unsubstituted amide group, a substituted or unsubstituted amino group, a hydrogen atom or halogen atom, or are taken together with each other to form a substituted or unsubstituted cycloalkan-2-on-1-yl group) in the presence of zinc and copper compounds to synthesis a 4-substituted azetidinone derivative represented by the formula (3)
(wherein OR
1
, CO
2
R
3
, X and Y are as defined above).
一种azetidinone衍生物,其通式表示为(1)(其中OR1为受保护的羟基;R2为取代或未取代的烷基、取代或未取代的烯基或取代或未取代的芳香族基),与一个酯化合物反应,该酯化合物的通式表示为(2)(其中CO2R3为酯化的羧基;X和Y分别代表取代或未取代的烷基、取代或未取代的烯基、取代或未取代的芳基烷基、取代或未取代的芳基、取代或未取代的烷硫基、取代或未取代的烯硫基、取代或未取代的芳基硫基、取代或未取代的芳基硫基、取代或未取代的烷氧基、取代或未取代的烯氧基、取代或未取代的芳基氧基、取代或未取代的氧基、取代或未取代的硅氧烷基、取代或未取代的杂环基、取代或未取代的杂环硫基、取代或未取代的杂环氧基、取代或未取代的酰基、取代或未取代的酯基、取代或未取代的硫酯基、取代或未取代的酰胺基、取代或未取代的氨基、氢原子或卤素原子,或彼此相互结合形成取代或未取代的环烷基2-酮1-基),在锌和铜化合物的存在下,合成一种4-取代的azetidinone衍生物,其通式表示为(3)(其中OR1,CO2R3,X和Y如上所定义)。