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:
Aug. 25, 1992
Filed:
Mar. 22, 1991
Applicant:
Inventors:
Yong Z Kim, Doryong, KR;
Jae H Yeo, Doryong, KR;
Jong C Lim, Doryong, KR;
Won S Kim, Doryong, KR;
Chan S Bang, Doryong, KR;
Assignee:
Lucky, Ltd., Seoul, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
540226 ; 540227 ;
Abstract
The present invention provides certain novel cephalosporin derivatives represented by following formula(I), which are especially useful as intermediates for the preparation of cephalosporin compounds possessed with potent and broad antibacterial activities. ##STR1## wherein: R.sup.1 is a C.sub.1-4 alkyl, C.sub.3-4 alkenyl, C.sub.3-4 cycloalkyl, amino optionally substituted with a C.sub.1-4 alkyl radical, or phenyl group optionally substituted on its 2-, 4-and/or 6-position with a halogen, C.sub.1-4 alkyl, C.sub.1-3 alkoxy or hydroxy radical;