A process for preparing optically active 3-substituted azetidinones of the formula
in which R¹ is hydroxy-protective group by a multi-step process. The invention also comprises a process for preparing optically active compound of the formula
in which R² is protected carboxy,
by enzymatic hydrolysis, preferably using esterase, preferably derived from microorganism belonging to genus Pimelobacter or Bacillus like FERM BP-3086 and FERM BP-3087. The invention also comprises biologically pure cultures of such microorganism and compounds of the formula
and process for their preparation.
一种制备光学活性 3-取代的式氮杂
环丁酮的工艺
其中 R¹ 为羟基保护基的多步制备工艺。本发明还包括一种制备光学活性式化合物的工艺
其中 R² 是受保护的羧基、
通过酶
水解,最好使用
酯酶,
酯酶最好来自属于皮膜杆菌属或芽孢杆菌属的微
生物,如 FERM
BP-3086 和 FERM
BP-3087。本发明还包括此类微
生物的
生物纯培养物和式如下的化合物
及其制备工艺。