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:
Jul. 21, 2015
Filed:
Mar. 07, 2013
Applicant:
Scinopharm (Changshu) Pharmaceuticals, Ltd., Changshu, Jiangsu Province, CN;
Inventors:
Yi-Jing Chen, Meishan Township, TW;
Stanislaw Pikul, Windsor, NJ (US);
Shen-Chun Kuo, Union, NJ (US);
Guo-dong Chu, Jiaxiang County, CN;
Assignee:
ScinoPharm (Changshu) Pharmaceuticals, Ltd., Changshu, Jiangsu, CN;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D 213/74 (2006.01); C07D 213/75 (2006.01); C07C 43/315 (2006.01); C07C 43/205 (2006.01);
U.S. Cl.
CPC ...
C07D 213/75 (2013.01); C07C 43/2055 (2013.01); C07C 43/315 (2013.01); C07D 213/74 (2013.01);
Abstract
The present invention provides novel processes for the preparation of N-substituted benzamides having the formula (VIc). In some embodiments, the invention provides a process for preparation of roflumilast and other pharmaceutically active species. Novel compounds, including intermediates for the synthesis of roflumilast, are also provided.