申请人:Otsuka Kagaku Kabushiki Kaisha
公开号:US04798890A1
公开(公告)日:1989-01-17
A process for preparing an azetidinone derivative represented by the formula ##STR1## wherein R.sup.1 is hydrogen, halogen or lower alkoxy, R.sup.2 is hydrogen, halogen, lower alkoxy, amino or a group ##STR2## (in which R.sup.5 is substituted or unsubstituted phenyl, substituted or unsubstituted phenylmethyl, substituted or unsubstituted phenoxymethyl, or substituted or unsubstituted benzoyl), or R.sup.1 and R.sup.2, when taken together, are carbonyl, R.sup.3 is substituted or unsubstituted phenyl, and R.sup.4 is hydrogen, optionally substituted hydrocarbon residue or acyl, silyl, sulfonyl or phosphonyl derived from inorganic acid or organic acid, the process comprising reacting a dithioazetidinone derivative represented by the formula ##STR3## wherein R.sup.1, R.sup.2 and R.sup.4 are as defined above and R.sup.9 is substituted or unsubstituted, nitrogen-containing aromatic heterocyclic residue with a compound represented by the formula R.sup.3 SO.sub.2 H (VII) wherein R.sup.3 is defined above.
一种制备由以下公式表示的氮杂环丁酮衍生物的方法##STR1##其中R.sup.1是氢,卤素或低烷氧基,R.sup.2是氢,卤素,低烷氧基,氨基或一个基团##STR2##(其中R.sup.5是取代或未取代的苯基,取代或未取代的苯甲基,取代或未取代的苯氧甲基,或取代或未取代的苯甲酰基),或者R.sup.1和R.sup.2在一起时是酰基,R.sup.3是取代或未取代的苯基,R.sup.4是氢,可选地取代的烃残基或酰基,硅烷基,磺酰基或磷酰基,它们源自无机酸或有机酸,该方法包括将由以下公式表示的二硫代氮杂环丁酮衍生物与由以下公式表示的化合物反应R.sup.3 SO.sub.2 H(VII)其中R.sup.3如上所定义。