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:
Feb. 15, 1977
Filed:
Sep. 15, 1975
Applicant:
Inventor:
Ian G Wright, Greenwood, IN (US);
Assignee:
Eli Lilly and Company, Indianapolis, IN (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D / ; C07D / ; C07D / ;
U.S. Cl.
CPC ...
2602 / ;
Abstract
A 3-methoxymethylcephalosporin acid is prepared by reacting a 3-hydroxymethylcephalosporin acid with a reagent selected from the group consisting of trifluoroacetic anhydride, phosphorus trichloride, phosphorus oxychloride, and thionyl chloride, and reacting the resulting intermediate with methanol.