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:
May. 10, 2011
Filed:
Jul. 20, 2006
Applicants:
Vipin Kumar Kaushik, Hyderabad, IN;
Umar Khan Mohammed, Hyderabad, IN;
Sivakumaran Meenakshisunderam, Hyderabad, IN;
Inventors:
Vipin Kumar Kaushik, Hyderabad, IN;
Umar Khan Mohammed, Hyderabad, IN;
Sivakumaran Meenakshisunderam, Hyderabad, IN;
Assignee:
Aurobindo Pharma Ltd., Hyderabad, IN;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D 307/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention relates to an improved process for the preparation of Escitalopram of the Formula (I), which comprises, isolation of Diol compound as an oxalate salt, resolution of Diol compound and cyclization of resolved compound of Formula (VII). The present invention provides a process to obtain pure Diol compound by preparing its Oxalate salt, which is useful for resolution of enantiomers.