发明授权
- 专利标题: Process for producing 7-aclamida-3-cephem-4-carboxylic acids
- 专利标题(中): 生产7-痤疮-3-头孢烯-4-羧酸的方法
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申请号: US31871472申请日: 1972-12-27
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公开(公告)号: US3864340A公开(公告)日: 1975-02-04
- 发明人: ISHIMARU TOSHIYASU , KODAMA YUTAKA
- 申请人: TOYAMA CHEMICAL CO LTD
- 专利权人: Toyama Chemical Co Ltd
- 当前专利权人: Toyama Chemical Co Ltd
- 优先权: JP220172 1971-12-28; JP220272 1971-12-28
- 主分类号: C07D
- IPC分类号: C07D20060101 ; C07D205/00 ; C07D279/00 ; C07D501/00 ; C07D501/04 ; C07D501/06 ; C07D501/20 ; C07D501/40 ; C07D501/60 ; C07D99/24
摘要:
7-ACYLAMIDE-3-CEPHEM-4-CARBOXYLIC ACIDS ARE PREPARED IN AN INDUSTRIALLY ADVANTAGEOUS MANNER, BY REACTING A 7-AMINO-3-CEPHAM4-CARBOXYLIC ACID WITH THE REACTIVE DERIVATIVES OF A CARBOXYLIC ACIDS IN THE PRESENCE OF ALCOHOLS, AS A SOLVENT, AND THEREAFTER, IF NECESSARY, REMOVING THE PROTECTING GROUP FOR THE AMINO GROUP OF THE ABOVE-OBTAINED PRODUCTS.
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