| 摘要 |
<p>The present invention relates to a process for stereoselective preparation of (3S,4S)-3-[(1'R)-1'-hydroxyethyl]-4-alkoxycarbonyl-2-azetidinone (I) which is a useful intermediate for preparing carbaphenem and phenem type β-lactam antibiotics. According to the present invention the objective compound can be synthesized with economic advantages as well as high synthetic yield.</p> |
