申请人:Fujisawa Pharmaceutical Co., Ltd.
公开号:US04383945A1
公开(公告)日:1983-05-17
This invention relates to novel 4-substituted-2-oxoazetidine compounds and salts thereof, which are useful intermediates in the preparation of antibiotics having the fundamental skeleton of Thienamycin, which compounds are of the formula: ##STR1## in which R.sup.1 is halogen, isocyano, hydroxy(lower)alkyl or protected hydroxy(lower)alkyl, R.sup.2 is hydrogen or lower alkyl optionally substituted by carboxy or protected carboxy, and R.sup.3 is carboxy or a protected carboxy group, or a base salt thereof.
本发明涉及新型的4-取代-2-氧代氮杂环丁烷化合物及其盐,这些化合物作为制备具有硫氮杂霉素基本骨架的抗生素的有用中间体,其化合物具有以下公式:##STR1## 其中R.sup.1是卤素、异氰基、羟基(低级)烷基或受保护的羟基(低级)烷基,R.sup.2是氢或可被羧基或受保护的羧基取代的低级烷基,R.sup.3是羧基或受保护的羧基团,或其碱盐。