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. 08, 2009
Filed:
Jul. 27, 2005
Applicants:
Kazuhiro Yoshizawa, Kashima-gun, JP;
Taiju Nakamura, Kashima-gun, JP;
Shigeto Negi, Kashima-gun, JP;
Inventors:
Kazuhiro Yoshizawa, Kashima-gun, JP;
Taiju Nakamura, Kashima-gun, JP;
Shigeto Negi, Kashima-gun, JP;
Assignee:
Eisai R&D Management Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D 209/44 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention relates to a method for producing an isoindole derivative (compound (II)) with the following general formula (II): (wherein Rand Reach independently represents a Calkyl group) or a salt thereof, comprising the step of cyclizing, in a solvent, compound (I) with the following general formula (I): (wherein Rand Rhave the same meanings as Rand Rin formula (II) above) or a salt thereof, or their hydrate or solvate in the presence of a base (Step 1).