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. 29, 1981
Filed:
Jun. 25, 1979
Applicant:
Inventors:
Marc Montavon, Basel, CH;
Roland Reiner, Basel, CH;
Assignee:
Hoffmann-La Roche Inc., Nutley, NJ (US);
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
544 27 ; 544 26 ;
Abstract
There is presented cephalosporin derivatives which are the readily hydrolysable esters and ethers of compounds of the general formula ##STR1## wherein R represents furyl, thienyl or phenyl optionally substituted by halogen, hydroxy, lower alkoxy or lower alkyl, R.sub.1 represents lower alkyl or aminocarbonylmethyl and X represents a group of the formula ##STR2## in which one of the two symbols R.sub.2 and R.sub.3 represents hydrogen and the other represents lower alkyl and R.sub.4 represents lower alkyl, as well as salts of said esters and ethers and hydrates of said esters, ethers and salts.