2-Methylchromone derivatives and process for their preparation
申请人:Eisai Co., Ltd.
公开号:US04513145A1
公开(公告)日:1985-04-23
A novel 2-methylchromone derivative represented by the general formula: ##STR1## wherein R.sub.1 means a hydrogen atom or a lower alkanoyl group. The above derivative is a useful intermediate for the synthesis of cephem activities, which are also effective against infections of the urinary tract, etc. A preparation process of the above chromone derivative is also disclosed.
2-Methylchromone derivatives and their preparation process
申请人:Eisai Co., Ltd.
公开号:EP0114899A1
公开(公告)日:1984-08-08
A novel 2-methylchromone derivative represented by the general formula:
wherein R, means a hydrogen atom or a lower alkanoyl group. The above derivative is a useful intermediate for the synthesis of cephem activities, which are also effective against infections of the urinary tract. etc. A preparation process of the above chromone derivative is also disclosed.
一种新型 2-甲基铬酮衍生物,其通式如下: 其中 R 指氢原子或低级烷酰基。 上述衍生物是合成头孢活性物质的有用中间体,对泌尿道感染等也有效。