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. 07, 1987
Filed:
May. 04, 1984
Applicant:
Inventor:
Michael S Kellogg, Waterford, CT (US);
Assignee:
Pfizer Inc., New York, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ; A61K / ;
U.S. Cl.
CPC ...
540310 ;
Abstract
6-.beta.-Substituted penicillanic acids and derivatives thereof as useful enhancers of the effectiveness of several .beta.-lactam antibiotics against many .beta.-lactamase producing bacteria, and 6-.beta.-substituted penicillanic acid derivatives wherein the carboxy group is protected by a conventional penicillin carboxy protecting group as useful intermediates leading to said synergistic agents. A process for converting 6,6-disubstituted penicillanic acid derivatives to the corresponding 6-.beta.-substituted penicillanic acid congeners.