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. 21, 2006
Filed:
Mar. 07, 2001
Alan K. Greenwood, London, GB;
Derek Mchattie, Stotfold, GB;
Josef A. Rechka, Slip End, GB;
Paul C. M. Hedger, Arlesey, GB;
Mark P. Gamble, Hitchin, GB;
Alan K. Greenwood, London, GB;
Derek McHattie, Stotfold, GB;
Josef A. Rechka, Slip End, GB;
Paul C. M. Hedger, Arlesey, GB;
Mark P. Gamble, Hitchin, GB;
Resolution Chemicals Limited, , GB;
Abstract
Preparation of citalopram comprises the steps of: (a) converting the compound of Formula (I) to a compound of Formula (II), wherein R in Formula (I) represents a Cto Calkylene group which may be substituted or unsubstituted, and Rin the compounds of Formula (II) represents a carboxylic acid group or a salt or an ester thereof; and (b) converting the compound of Formula (II) to form citalopram or a pharmaceutically acceptable salt thereof, or a direct conversion of the compound of Formula (I) to citalopram