发明授权
- 专利标题: Azetidinone derivatives and production thereof
- 专利标题(中): 氮杂环丁酮衍生物及其制备
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申请号: US967007申请日: 1978-12-06
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公开(公告)号: US4233216A公开(公告)日: 1980-11-11
- 发明人: Shoichiro Uyeo , Mitsuru Yoshioka , Teruji Tsuji , Ikuo Kikkawa , Wataru Nagata
- 申请人: Shoichiro Uyeo , Mitsuru Yoshioka , Teruji Tsuji , Ikuo Kikkawa , Wataru Nagata
- 申请人地址: JPX Osaka
- 专利权人: Shionogi & Co., Ltd.
- 当前专利权人: Shionogi & Co., Ltd.
- 当前专利权人地址: JPX Osaka
- 优先权: JPX52/13452 19770208
- 主分类号: C07D205/08
- IPC分类号: C07D205/08 ; C07D205/085 ; C07D505/00 ; C07D403/12 ; C07D409/12 ; C07D417/12
摘要:
.alpha.-[3(R)-Substituted amino-4(R)-substituted alkoxy-2-oxo-azetidin-1-yl]-.alpha.-isopropenylacetate (Ia) and .alpha.-[3(R)-substituted amino-4(R)-substituted alkoxy-2-oxo-azetidin-1-yl]-.alpha.-isopropylideneacetate (Ib) prepared from (1R,5S)-.alpha.-(3-substituted-7-oxo-4-oxa-2,6-diazabicyclo[3.2.0]hept-2-en-6-yl)-.alpha.-isopropenylacetate or (1R,5S)-.alpha.-(3-substituted-7-oxo-4-oxa-2,6-diazabicyclo-[3.2.0]hept-2-en-6-yl)-.alpha.-isopropylideneacetate with a primary alcohol in the presence of an acid. The products are useful intermediates for preparing oxadethiacephalosporins.
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