发明名称 |
PROCESS FOR PRODUCING 7-BETA-ACYLAMINO-7-ALPHA-ALKOXY-CEPHEME-4-CARBOXYLIC ACID- OR 6-BETA-ACYLAMINO-6-ALPHA-ALKOXY-PENAME-3-CARBOXYLIC ACID DERIVATIVES |
摘要 |
A process for preparing a 7 beta -acylamino-7 alpha alkoxycephalosporin or 6 beta -acylamino-6 alpha -alkoxypenicillin which comprises either (a) reacting a 7 beta -( alpha '-halogeno or alpha '-hydroxyacylamino)cephalosporin or 6 beta -( alpha 'halogeno or alpha '-hydroxyacylamino)penicillin with a halogenating agent to give a alpha -halogeno-iminohalide, reacting the latter compound with an equimolar amount of an alkali metal alkoxide in the presence of one equivalent amount of a base to give a 7 alpha -alkoxyketeneimine and subjecting the latter compound to hydration; or (b) reacting the 7 beta -( alpha '-halogeno or alpha 'hydroxyacylamino)cephalosporin or 6 beta -( alpha '-halogeno or alpha '-hydroxyacylamino) penicillin with the halogenating agent to give the alpha -halogeno-iminohalide, reacting the latter compound with two equimolar amounts of the alkali metal alkoxide in the presence of one equivalent amount of the base to give a dialkoxyimino compound, reacting the latter compound with a halogeno-silyl compound or an acid and treating the resulting product with water. |
申请公布号 |
HU174378(B) |
申请公布日期 |
1979.12.28 |
申请号 |
HU1975SA02763 |
申请日期 |
1975.03.21 |
申请人 |
SANKYO CO LTD,JP |
发明人 |
HIRAOKA,TETSUO,JP;SUGIMURA,YUKIO,JP |
分类号 |
C07D499/00;C07D499/21;C07D499/44;C07D501/57 |
主分类号 |
C07D499/00 |
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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