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Document Type and Number:
Japanese Patent JPH0346474
Kind Code:
B2
Abstract:
NEW MATERIAL:A compound of formula I [X is halogen: Y and Z incorporate to form a group, =NR<5> (R<5> is protected hydroxyl)], its salt or ester. EXAMPLE:Ethyl alpha-ethoxyimino-2-aminothiazol-4-ylacetate hydrobromide. USE:A synthetic intermediate of antibacterials. PREPARATION:The customary halogenation of a compound of formula II such as a beta-ketobutyric acid bearing a protected oxyimino group in the alpha-position gives the compound of formula I . In the compound of formula I , methyl, phenyl or acetyl is cited as a protecting group for the hydroxyl and methyl, tolyl or benzyl for the carboxyl. The protected oxyimino group has syn- and anti-forms theoretically.

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Inventors:
OCHIAI MICHIHIKO
MORIMOTO AKIRA
MATSUSHITA YOSHIHIRO
AKI NOBUCHIKA
OKADA TAIICHI
KAWAKITA KENJI
Application Number:
JP23207285A
Publication Date:
July 16, 1991
Filing Date:
October 16, 1985
Export Citation:
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Assignee:
TAKEDA CHEMICAL INDUSTRIES LTD
International Classes:
C07C251/32; A61K31/426; A61K31/43; A61K31/545; A61K31/546; A61P31/04; C07C67/00; C07C239/00; C07D277/20; C07D277/34; C07D277/40; C07D277/46; C07D277/48; C07D499/60; C07D499/64; C07D499/70; C07D499/76; C07D501/06; C07D501/20; C07D501/36; C07D501/57



 
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