A Synthesis of (3<i>S</i>,4<i>R</i>)-3-[(<i>R</i>)-1-(<i>t</i>-Butyldimethylsilyloxy)ethyl]-4-carboxymethyl-2-azetidinone, the Thienamycin Intermediate, from (<i>S</i>)-Ethyl Lactate
作者:Yoshio Ito、Shiro Terashima
DOI:10.1246/cl.1987.445
日期:1987.3.5
The title thienamycin intermediate was efficiently synthesized from (S)-ethyl lactate (3) by subjecting (3S,4S)-3-acetyl-4-[(S)-1-benzyloxyethyl]-2-azet idi none readily obtainable from 3, to sequential reactions in which base catalyzed elimination and regioselective hydroboration were employed as the key processes.
通过 (3S,4S)-3-乙酰基-4-[(S)-1-苄氧基乙基]-2-azet idi 没有容易从 3 中获得,从 (S)-乳酸乙酯 (3) 有效地合成了标题硫霉素中间体,到顺序反应,其中碱催化消除和区域选择性硼氢化被用作关键过程。