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PROCESS FOR THE PREPARATION OF 3-CEPHEM COMPOUNDS
专利权人:
OTSUKA KAGAKU KABUSHIKI KAISHA
发明人:
KAMEYAMA, YUTAKA
申请号:
AT04028497
公开号:
AT554094T
申请日:
1998.10.16
申请国别(地区):
AT
年份:
2012
代理人:
摘要:
A process for preparing a 3-halogenomethylcephem compound of the formula (2) or a salt thereof <;CHEM>; wherein X<;1>; is a halogen atom, characterized in that a carboxylic acid protecting group at the 4-position of a 7-amino-3-halogenomethylcephem compound of the formula (1) or a salt thereof <;CHEM>; wherein X<;1>; is a halogen atom, and R<;1>; is a benzyl group which has on a phenyl ring an electron-donating group as a substituent, or a diphenylmethyl group which may have an electron-donating group on a phenyl ring, is deprotected with a phenol derivative.
来源网站:
中国工程科技知识中心
来源网址:
http://www.ckcest.cn/home/

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