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:
Oct. 20, 1998
Filed:
Aug. 11, 1997
Applicant:
Inventors:
Niranjan Lal Gupta, Madhya Pradesh, IN;
Ramanathan Sankaran, Madhya Pradesh, IN;
Sugata Chattejee, Madhya Pradesh, IN;
Tumma Hari Krishna, Madhya Pradesh, IN;
Assignee:
Lupin Laboratories Ltd., Bombay, IN;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
540215 ;
Abstract
A process for the stereospecific synthesis of keto-enol tautomeric mixture of p-nitrobenzyl (1R,6R,7R)-7-phenoxyacetamido-3-oxo-3-cepham-4-(R/S)-carboxylate-1-oxide and p-nitrobenzyl (1R,6R,7R)-7-phenoxyacetamido-3-hydroxy-3-cephem-4-carboxylate-1-oxide is described. These compounds are valuable intermediates for the synthesis of cephalosporin antibiotics e.g. cefaclor.
Gupta, Niranjan. (1998). Process for sterospecific synthesis of keto-enol tautomeric mixture of p (U.S. Patent No. 5824801). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5824801
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile