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:
Jul. 26, 1977
Filed:
Apr. 19, 1976
Applicant:
Inventors:
Gary A Koppel, Indianapolis, IN (US);
Laurence J Nummy, Cambridge, MA (US);
Assignee:
Eli Lilly and Company, Indianapolis, IN (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
2602 / ; 424246 ;
Abstract
3-Hydroxymethyl-2-cephems are provided by (1) reacting a 2-halomethylcephem compound with a .gamma.-hydroxycarboxylic acid salt or a .delta.-hydroxycarboxylic acid salt and (2) reacting the novel .gamma. or .delta.-hydroxy esters thereby obtained with a protic acid. The 3-hydroxymethylcephems provided by the process of this invention are useful intermediates for the preparation of known cephalosporin antibiotics.
Koppel, Gary. (1977). Process for preparation of 3-hydroxymethylcephems (U.S. Patent No. 4038275). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4038275
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile