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. 26, 2008
Filed:
Dec. 04, 2002
Applicants:
Masahiko Seki, Kyoto, JP;
Toshiaki Shimizu, Osaka, JP;
Shin-ichi Yoshida, Hyogo, JP;
Masanori Hatsuda, Shiga, JP;
Inventors:
Masahiko Seki, Kyoto, JP;
Toshiaki Shimizu, Osaka, JP;
Shin-ichi Yoshida, Hyogo, JP;
Masanori Hatsuda, Shiga, JP;
Assignee:
Tanabe Seiyaku Co., Ltd., Osaka-shi, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D 233/20 (2006.01); C07D 277/10 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention is to provide a process for preparing a synthetic intermediate of biotin which is industrially advantageous, and discloses a process for preparing a compound represented by the formula (I):