Beef liver esterase catalysed resolution of the undesired enantionmer of racemic compound cis-3-acetoxy-4-phenylazetidin-one,producing the (S)-(-)-alcohol and the desired (R)-(+)-acetate.

• 牛肝酯酶催化拆分顺-3-乙酰氧基-4-苯基氮杂环丁酮,得到(S)-(-)-醇和标的产物(R)-(+)-乙酸酯。