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:
Aug. 21, 1990
Filed:
Sep. 06, 1988
Applicant:
Inventors:
Kunio Atsumi, Yokohama, JP;
Yuichi Yamamoto, Yokohama, JP;
Kenji Sakagami, Yokohama, JP;
Ken Nishihata, Yokohama, JP;
Shinichi Kondo, Yokohama, JP;
Assignee:
Meiji Seika Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D / ; A61K / ;
U.S. Cl.
CPC ...
514201 ; 540221 ;
Abstract
The present invention relates to a cephem compound of formula (III) shown in the description. The compound is useful as an intermediate for the synthesis of .beta.-lactam antibiotics of new class and also to a process for producing the same. The cephem compound (III) is produced by reacting a cephem compound of formula (I) with a nitrogen-containing compound of formula (II) under acid-capturing conditions. The process can be performed easily under mild conditions.