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:
Apr. 07, 2009
Filed:
Sep. 02, 2004
Applicants:
Yoshihisa Tokumaru, Tokushima, JP;
Norio Saito, Tokushima, JP;
Makoto Akizuki, Tokushima, JP;
Inventors:
Assignees:
Otsuka Chemical Co., Ltd., Osaka, JP;
Taiho Pharmaceutical Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D 477/06 (2006.01);
U.S. Cl.
CPC ...
Abstract
A process for preparing a penicillanic acid compound of the formula (2) comprising reacting a halogenated penicillanic acid compound of the formula (1), (a) in the presence of a metal bismuth or bismuth compound, (b) with a metal having a lower standard oxidation-reduction potential than bismuth to obtain the compound (2) (X and Y are a hydrogen atom or halogen atom, provided that X and Y are not hydrogen atoms at the same time, n is an integer of 0 to 2, R is carboxylic acid protecting group) (n and R are same as above).