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:
Mar. 16, 1999
Filed:
Nov. 19, 1997
Applicant:
Inventors:
John E Hengeveld, Kenosha, WI (US);
Xiaoxing Dong, Lancaster, PA (US);
Ashok K Gupta, Gurnee, IL (US);
Richard R Copp, Jr, Kenosha, WI (US);
Ramiya H Premchandran, Gurnee, IL (US);
Assignee:
Abbott Laboratories, Abbott Park, IL (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G07H / ;
U.S. Cl.
CPC ...
536-72 ; 536 185 ;
Abstract
Disclosed is an improved and efficient process for N-desmethylating the 3'-amino nitrogen of erythromycins and for converting the 3'-N-desmethylated erythromycins into 3'-N-substituted derivatives of 8,9-anhydro-erythromycin 6,9-hemiketals.