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:
Apr. 27, 1976
Filed:
Sep. 12, 1972
Applicant:
Inventors:
Derek Harold Barton, London, EN;
Peter George Sammes, London, EN;
Assignee:
Glaxo Laboratories Limited, Greenford, EN;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
2602 / ; 2602391 ; 2602 / ; 260949 ;
Abstract
Novel azetidin-2-ones having in the 4-position an S-attached saturated or unsaturated, substituted or unsubstituted aliphatic group having at least 2 carbon atoms and in the 3-position an amino or blocked amino group are provided. The novel compounds are useful as intermediates in the production of cephalosporins, penicillins and related .beta.-lactam antibiotic compounds. The novel compounds are prepared by cleaving a penicillin-1-oxide in the presence of a compound containing a nucleophilic carbon-carbon multiple bond not forming part of a ring.