发明授权
- 专利标题: Process for the preparation of 1,1-dioxo-7-substituted cephems
- 专利标题(中): 制备1,1-二氧代-7-取代头孢烯的方法
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申请号: US388191申请日: 1989-08-01
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公开(公告)号: US4992541A公开(公告)日: 1991-02-12
- 发明人: Thomas J. Blacklock , John W. Butcher , Paul Sohar , Theresa Lamanec
- 申请人: Thomas J. Blacklock , John W. Butcher , Paul Sohar , Theresa Lamanec
- 申请人地址: NJ Rahway
- 专利权人: Merck & Co., Inc.
- 当前专利权人: Merck & Co., Inc.
- 当前专利权人地址: NJ Rahway
- 主分类号: C07D501/00
- IPC分类号: C07D501/00 ; C07D501/04 ; C07D501/57
摘要:
The present invention relates to an improved process for the preparation of the compounds of formula (I) ##STR1## which involve the direct oxidation without N-protection of the compound of the formula (II) ##STR2##
公开/授权文献
- US4502216A Safety razor provided with an articulated head 公开/授权日:1985-03-05
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