| abstract |
The present invention relates to a chiral 2-azetidinone compound, a method of its preparation and a use thereof. In particular, the present invention relates to a 2-azetidinone compound with superior stereoselectivity, which is obtained by the reaction between 4-acetoxy-2-azetidinone compound, and a propiophenone derivative or its salt and its use as an intermediate for manufacturing β-methylcarbapenem antibiotics. |