发明名称 |
FOERFARANDE FOER FRAMSTAELLNING AV KONVENTIONELLA CEFALOSPORINER UNDER ANVAENDNING AV TRIMETYLSILYLESTRAR ELLER ANDRA LAETTHYDROLYSERBARA ESTRAR AV 7-TRIMETYLSILYLOXIKARBONYLAMINOCEFALOSPORINSYRA |
摘要 |
In the preferred embodiment of the present invention trimethylsilyl 7-trimethylsilyloxycarbonylaminodecephalosporanate was prepared by bubbling dry carbon dioxide into an anhydrous solution of trimethylsilyl 6-trimethylsilylaminodecephalosporanate and found to be a useful intermediate in the production of cefadroxil and cephalexin by its acylation in anhydrous media with the appropriate 2-phenylglycyl chloride hydrochloride. Other cephalosporins are produced by acylation of 7-trimethylsilyloxycarbonylaminoceph-3-em-4-carboxylic acids or esters having a variety of substituents at the 3-position. |
申请公布号 |
SE458608(B) |
申请公布日期 |
1989.04.17 |
申请号 |
SE19840004730 |
申请日期 |
1984.09.20 |
申请人 |
BRISTOL-MYERS COMPANY |
发明人 |
D * WALKER;H H * SILVESTRI;C * SAPINO;D A * JOHNSON |
分类号 |
C07D501/04;C07D501/06;C07D501/18;C07D501/20;C07D501/22;C07F7/10;C07F7/18 |
主分类号 |
C07D501/04 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|