The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 05, 1985
Filed:
Feb. 24, 1982
Applicant:
Inventors:
Assignee:
Takeda Chemical Industries, Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ; A61K / ;
U.S. Cl.
CPC ...
2602 / ;
Abstract
Compounds of the formula (I): ##STR1## wherein R is an ethyl group which may optionally be substituted and n is 0 or 1, or a physiologically acceptable salt thereof, can be produced by subjecting to isomerization a compound of the formula (II): ##STR2## wherein R and n have the same meaning as defined above, or a salt thereof, by using a quaternary ammonium halide and are useful as a bactericide or disinfectant, and also a synergistic effect with penicillin and/or cephalosporin antibiotic agents. Among the compounds of the formula (I), compounds shown by the formula: ##STR3## wherein R.sub.6 is H or --SO.sub.3 H, as well as salts thereof, are novel.