发明名称 |
3-HALOGENCARBACEPHEM-VERBINDUNGEN |
摘要 |
<p>Novel halogenated cephalosporin derivatives having the formula <IMAGE> where X is amino, azido or protected amino, R is carboxyl or protected carboxyl, and Hal is halogen, and salts thereof, are prepared by addition of a thiol or selenol to a starting material of the formula <IMAGE> where X1 is azido or protected amino; oxidising the adduct to give <IMAGE> where Y is Se or S; halogenating and eliminating HO-Y-R' to give the halogenated cephalosporin products. The free amino derivatives (X=NH2) and free carboxyl derivatives (R=COOH) are obtained by removal of the protecting groups.</p> |
申请公布号 |
DE2952413(A1) |
申请公布日期 |
1980.07.17 |
申请号 |
DE19792952413 |
申请日期 |
1979.12.27 |
申请人 |
KYOWA HAKKO KOGYO CO.LTD. |
发明人 |
HIRATA,TADASHI;MATSUKUMA,IKUO |
分类号 |
A61K31/435;A61P31/04;C07D463/00;C07D471/04;(IPC1-7):C07D471/04 |
主分类号 |
A61K31/435 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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