发明授权
US5317100A Process for the preparation of optically active acyloxyazetidinones 失效
制备光学活性酰氧基氮杂环丁酮的方法

Process for the preparation of optically active acyloxyazetidinones
摘要:
Compounds of the formula ##STR1## in which R.sub.1 is hydrogen or lower alkyl, R.sub.2 is hydrogen or a hydroxyl protective group R.sub.2 ' and R.sub.3 is substituted or unsubstituted phenyl or lower alkyl can be prepared in a three-stage process from readily accessible .beta.-lactam starting materials.
信息查询
0/0