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:
Jun. 03, 1986
Filed:
Mar. 13, 1984
Applicant:
Inventors:
Masayuki Narisada, Osaka, JP;
Hiroshi Onoue, Osaka, JP;
Teruji Tsuji, Osaka, JP;
Yasuhiro Nishitani, Osaka, JP;
Mitsuru Yoshioka, Osaka, JP;
Yoshio Hamashima, Kyoto, JP;
Wataru Nagata, Hyogo, JP;
Assignee:
Shionogi & Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ; C07D / ; C07D / ; C07D / ;
U.S. Cl.
CPC ...
2602 / ; 2602454 ; 2603303 ; 2603309 ; 544 90 ; 544359 ; 544366 ; 544367 ; 544182 ; 544214 ; 544215 ; 544219 ;
Abstract
Intermediates of the following formula are useful for the synthesis of 1-oxacephalosporins. Their preparation from penicillins and the transformation process to make 1-oxacephalosporins are disclosed. The compounds are of the formula: ##STR1## wherein A is amino or a selected acylamino;