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. 14, 2012
Filed:
Mar. 30, 2006
Toshiaki Masui, Hyogo, JP;
Kazuhiro Yoshida, Osaka, JP;
Toshiaki Masui, Hyogo, JP;
Kazuhiro Yoshida, Osaka, JP;
Shionogi & Co., Ltd., Osaka-shi, JP;
Abstract
Disclosed is a process for the preparation of Compound (III), salt or solvate thereof by reacting Compound (I), salt or solvate thereof with Compound (II) in a toluene solvent in the presence of an additive such as water or an alcohol. Also disclosed is a process for the preparation of Compound (IV) comprising hydrolyzing the obtained Compound (III) if necessary, and then oxidizing. In the formula, Ris hydrogen, optionally substituted lower alkyl, optionally substituted aryl or optionally substituted aryl lower alkyl, and Ris optionally substituted lower alkyl, optionally substituted cycloalkyl or optionally substituted aryl lower alkyl.