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. 07, 1984
Filed:
Apr. 20, 1982
Applicant:
Inventor:
Shoichiro Uyeo, Kyoto, JP;
Assignee:
Shionogi & Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61K / ; C07G / ;
U.S. Cl.
CPC ...
2602 / ; 2602 / ; 2602 / ; 424270 ; 424274 ;
Abstract
Antibacterial carbapenem compounds represented by the general formula ##STR1## wherein X is hydrogen or alkyl, A is hydrogen or alkyl, R is hydrogen or a monovalent substituent and COB is carboxy, its pharmaceutically acceptable ester or its alkali metal salt are prepared from the suitably substituted monocyclic 2-azetidinone by a Wittig cyclization or carbene-insertion cyclization to give Compounds(I) or by cleaving the dioxolane ring of above Compounds(I) with a strong base e.g. DEN or DBU to give above Compounds(II). Some other alterations of COB, R and side chain structure are also disclosed.