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:
Sep. 22, 1987
Filed:
Dec. 07, 1984
Applicant:
Inventors:
John Hannah, Matawan, NJ (US);
Burton G Christensen, Cliffside, NJ (US);
Assignee:
Merck & Co., Inc., Rahway, NJ (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D / ; A61K / ;
U.S. Cl.
CPC ...
514206 ; 540227 ;
Abstract
This application discloses antibacterial cephems of the formula: ##STR1## wherein R.sub.1 represents hydrogen, alkyl, alkenyl, heterocyclylalkyl, or aralkyl; R.sub.3 is a 5- or 6-membered heterocyclic ring selected from: ##STR2## and X is sulfur or oxygen. Included also are pharmaceutically acceptable salts and esters of such compounds; pharmaceutical compositions thereof, and methods of treatment comprising such compositions when an antibiotic effect is needed.