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. 19, 1978
Filed:
Aug. 22, 1977
Applicant:
Inventors:
Peter Hubert Bentley, Rudgwick, GB;
Gerald Brooks, Reigate, GB;
Assignee:
Beecham Group Limited, Brentford, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
544 27 ; 544 30 ; 544 26 ;
Abstract
The use of an iodolactone as an esterifying derivative in the preparation of lactonyl esters of cephalosporins substantially reduces double bond migration during the esterification reaction.