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:
Sep. 11, 2007
Filed:
May. 31, 2006
Applicants:
Tsukusa Yamada, Ashiya, JP;
Nobushige Itaya, Nishinomiya, JP;
Masahide Tanaka, Nishinomiya, JP;
Inventors:
Assignee:
Sumitomo Chemical Company, Limited, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09B 11/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention provides a process for producing tolterodine of the formula (1) or its salt, which comprises a step reacting a compound of the formula (2) with a base to obtain a reaction product; a step reacting the reaction product with a compound of the formula (3) to obtain a compound of the formula (4); and a step eliminating the protective group from the compound of the formula (4), and also provides a process for producing the compound of the formula (3).