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. 03, 2000
Filed:
May. 27, 1999
Applicant:
Inventor:
Thomas A Runge, Scotts, MI (US);
Assignee:
Pharmacia & Upjohn Company, Kalamazoo, MI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61K / ; A61K / ; A61P / ; A61P / ; C07D / ;
U.S. Cl.
CPC ...
514408 ; 548566 ;
Abstract
This invention provides a novel and useful purification step in the manufacture of a diamine pyrrolidine side chain intermediate for a quinolone antibiotic that allows production of the antibiotic in significantly greater yields and at lower costs than was previously possible. Salts, procedures and processes for preparing them, including the salt disclosed in Formula A-1, below, are also disclosed. ##STR1##