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:
Jun. 22, 1999
Filed:
Mar. 11, 1998
Applicant:
Inventors:
Ian Egle, Mississauga, CA;
Regis CS.H. Leung-Toung, Mississauga, CA;
Bo Lei, Thornhill, CA;
Tim Fat Tam, Woodbridge, CA;
Tao Xin, North York, CA;
Khashayar Karimian, Mississauga, CA;
Assignee:
Apotex, Inc., Weston, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ; C07D / ; C07D / ;
U.S. Cl.
CPC ...
544363 ; 544100 ; 546153 ;
Abstract
Novel process for the preparation of quinolone carboxylic acid derivatives of general formula I, and intermediates thereof as illustrated in Scheme 1 wherein the key intermediate is a compound of formula IX. ##STR1##